2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2593
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC P2771
- Four Wheel Drive (4WD) Low Switch Circuit
Circuit/System Description
The four wheel drive (4WD) low circuit consists of the engine control module (ECM), a transfer case control module and the circuit wiring. The
transfer case control module controls the 4WD low signal circuit. When the operator selects 4WD low, the transfer case control module grounds the
signal circuit, and the 4WD low signal voltage on the circuit changes from ignition voltage to zero volts. The ECM then compensates for transfer
case gear reduction in the transmission output shaft speed (OSS) sensor signal. The ECM uses the transmission OSS sensor signal to adjust shift
points, line pressure and torque converter clutch (TCC) scheduling.
Conditions for Running the DTC
* No throttle position (TP) sensor DTCs P0122, or P0123.
* No OSS assembly DTCs P0722 or P0723.
* No cam or crank sensor DTCs.
* The system voltage is 9-18 volts.
* The engine speed is 1,000-5,500 RPM for at least 30 seconds.
* The vehicle speed is at least 40 km/h (25 mph).
* The TP angle is 5-40 percent.
* The gear range is not PARK, NEUTRAL or REVERSE.
* The TFT is -20 to +130掳C (-4 to +266掳F).
Conditions for Setting the DTC
Condition 1
* The 4WD low switch is not in 4WD low, open/12 volts.
* The Transfer Case Ratio is 2.64-2.9 for 2 seconds.
* Both conditions must be met twice.
Condition 2
* The 4WD low switch is in 4WD low.
* The Transfer Case Ratio is 0.8-1.75 for 2 seconds.
Action Taken When the DTC Sets
* DTC P2771 is a Type B DTC.
* The ECM commands a normal shift pattern, not a 4WD low shift pattern.
Conditions for Clearing the DTC
DTC P2771 is a Type B DTC.
Diagnostic Aids
A malfunctioning speed sensor could cause DTC P2771 to set.
* Verify that the input speed sensor (ISS) and the OSS are functioning properly.
* In 3rd gear at approximately 64 km/h (40 mph), command TCC ON. If functioning properly the OSS will track ISS and the engine RPM. If
not refer to DTC P0716 for the ISS and DTC P0723 for the OSS.
* If the speed sensors pass testing, refer to Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component
Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor
Connections).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Showing posts with label * Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System. Show all posts
Showing posts with label * Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System. Show all posts
Saturday, December 5, 2020
Friday, December 4, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2567
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2567
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
* The transmission output shaft speed is equal to or greater than 200 RPM.
* 1-2-3-4 clutch is commanded OFF.
Conditions for Setting the DTC
P2723
The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is commanded ON for 0.5 seconds and either fail case
below is achieved:
Condition 1
* Output shaft speed is greater than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
Condition 2
* Output shaft speed is less than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
P2724
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is commanded OFF for 0.5 seconds and the following
is achieved:
* The 1-2-3-4 clutch commanded pressure is 0 kPa for a calculated amount of time.
* The transmission input shaft speed is less than 40 RPM from the anticipated input shaft speed.
* The output shaft speed is greater than 60 RPM.
Action Taken When the DTC Sets
* DTCs P2723 and P2724 are Type A DTCs.
* The TCM freezes transmission adaptive functions.
* DTC P2723 defaults to Reverse, Park, Neutral, 5th, or 6th gear.
* DTC P2724 defaults to Reverse, Park, Neutral, 1st, or 2nd gear.
Conditions for Clearing the DIC/DTC
DTCs P2723 and P2724 are Type A DTCs.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
* The transmission output shaft speed is equal to or greater than 200 RPM.
* 1-2-3-4 clutch is commanded OFF.
Conditions for Setting the DTC
P2723
The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is commanded ON for 0.5 seconds and either fail case
below is achieved:
Condition 1
* Output shaft speed is greater than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
Condition 2
* Output shaft speed is less than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
P2724
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is commanded OFF for 0.5 seconds and the following
is achieved:
* The 1-2-3-4 clutch commanded pressure is 0 kPa for a calculated amount of time.
* The transmission input shaft speed is less than 40 RPM from the anticipated input shaft speed.
* The output shaft speed is greater than 60 RPM.
Action Taken When the DTC Sets
* DTCs P2723 and P2724 are Type A DTCs.
* The TCM freezes transmission adaptive functions.
* DTC P2723 defaults to Reverse, Park, Neutral, 5th, or 6th gear.
* DTC P2724 defaults to Reverse, Park, Neutral, 1st, or 2nd gear.
Conditions for Clearing the DIC/DTC
DTCs P2723 and P2724 are Type A DTCs.
Saturday, November 28, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2439
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2439
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P1631
- Theft Deterrent Fuel Enable Signal Not Correct
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The ECM receives an incorrect prerelease password from the TDM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P1631 will be when a correct fuel enable password is received.
* A history DTC will be cleared after 40 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.
Reference Information
Schematic Reference
Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and
Operation/Immobilizer Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: Because of normal system communications between the TDM and ECM, any theft deterrent B-codes must be diagnosed prior
to the diagnosis of P-codes.
Perform the 10-Minute Immobilizer Relearn procedure. Refer to Immobilizer System Component Programming (See: Accessories and Optional
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P1631
- Theft Deterrent Fuel Enable Signal Not Correct
Circuit/System Description
The theft deterrent module (TDM) sends the prerelease password to the engine control module (ECM) via the serial data circuit. The ECM then
sends a challenge to the TDM. Both the ECM and TDM perform a calculation on this challenge. If the calculated response from the TDM equals
the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC
The ECM receives an incorrect prerelease password from the TDM.
Action Taken When the DTC Sets
* The security indicator will illuminate.
* Vehicle starting will be disabled.
Conditions for Clearing the DTC
* A current DTC P1631 will be when a correct fuel enable password is received.
* A history DTC will be cleared after 40 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.
Reference Information
Schematic Reference
Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and
Operation/Immobilizer Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: Because of normal system communications between the TDM and ECM, any theft deterrent B-codes must be diagnosed prior
to the diagnosis of P-codes.
Perform the 10-Minute Immobilizer Relearn procedure. Refer to Immobilizer System Component Programming (See: Accessories and Optional
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2427
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2427
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P064A
- Fuel Pump Control Module Performance
DTC P1255
- Fuel Pump Control Module Driver Over-temperature
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from
the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,
the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The fuel pump control module detects an over-temperature fault.
Action Taken When the DTC Sets
DTCs P064A and P1255 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P064A and P1255 are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P064A
- Fuel Pump Control Module Performance
DTC P1255
- Fuel Pump Control Module Driver Over-temperature
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from
the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,
the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The fuel pump control module detects an over-temperature fault.
Action Taken When the DTC Sets
DTCs P064A and P1255 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P064A and P1255 are Type A DTCs.
Diagnostic Aids
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records
can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the
diagnostic test reported a pass and/or a fail.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Friday, November 27, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2416
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2416
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
Wednesday, November 25, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2360
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2360
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0961
- Line Pressure Control (PC) Solenoid System Performance
DTC P0962
- Line Pressure Control (PC) Solenoid Control Circuit Low Voltage
DTC P0963
- Line Pressure Control (PC) Solenoid Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The line pressure control solenoid is part of the control solenoid valve assembly and is not serviced separately. The line pressure control solenoid
regulates the transmission fluid line pressure when the engine is running. The transmission control module varies the current to the normally high
line pressure control solenoid valve from 0.1 amp for maximum line pressure, to 1.1 amps for minimum line pressure. This is accomplished by
varying the current in order to obtain the desired line pressure in kPa (psi).
Conditions for Running the DTC
* The engine run time is greater than 5 seconds.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
* The system voltage is 11-18 volts.
P0961
DTC P0961 is not failed this ignition.
P0962
DTC P0962 is not failed this ignition.
P0963
DTC P0963 is not failed this ignition.
Conditions for Setting the DTC
P0961
The transmission control module detects an internal electrical performance malfunction of the line pressure control solenoid control circuit and the
actual line pressure does not equal the commanded line pressure for 300 milliseconds.
P0962
The transmission control module detects an internal low voltage electrical malfunction of the line pressure control solenoid control circuit for 300
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0961
- Line Pressure Control (PC) Solenoid System Performance
DTC P0962
- Line Pressure Control (PC) Solenoid Control Circuit Low Voltage
DTC P0963
- Line Pressure Control (PC) Solenoid Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The line pressure control solenoid is part of the control solenoid valve assembly and is not serviced separately. The line pressure control solenoid
regulates the transmission fluid line pressure when the engine is running. The transmission control module varies the current to the normally high
line pressure control solenoid valve from 0.1 amp for maximum line pressure, to 1.1 amps for minimum line pressure. This is accomplished by
varying the current in order to obtain the desired line pressure in kPa (psi).
Conditions for Running the DTC
* The engine run time is greater than 5 seconds.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
* The system voltage is 11-18 volts.
P0961
DTC P0961 is not failed this ignition.
P0962
DTC P0962 is not failed this ignition.
P0963
DTC P0963 is not failed this ignition.
Conditions for Setting the DTC
P0961
The transmission control module detects an internal electrical performance malfunction of the line pressure control solenoid control circuit and the
actual line pressure does not equal the commanded line pressure for 300 milliseconds.
P0962
The transmission control module detects an internal low voltage electrical malfunction of the line pressure control solenoid control circuit for 300
Saturday, November 21, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2275
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2275
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0741
- Torque Converter Clutch (TCC) - Stuck Off
DTC P0742
- Torque Converter Clutch (TCC) - Stuck On
Circuit/System Description
The torque converter clutch (TCC) pressure control (PC) solenoid is part of the control solenoid valve assembly which has no serviceable parts.
The TCC PC solenoid is a normally low pressure control solenoid. The TCC PC solenoid regulates transmission fluid to the TCC regulator valve in
the lower valve body and the TCC control valve in the pump cover. When vehicle operating conditions are appropriate to apply the converter
clutch, the transmission control module (TCM) will increase TCC PC current flow (duty cycle) to the TCC solenoid. The TCC PC solenoid directs
fluid pressure to move the TCC control valve to the apply position, and moves the TCC regulator apply valve to the regulating position. The TCC
regulator valve regulates TCC apply fluid pressure proportional to TCC solenoid pressure. When the TCC is fully applied, the engine is coupled
directly to the transmission. TCC release is accomplished by the TCM decreasing current flow to the TCC PC solenoid. This results in decreasing
the apply pressure which allows the TCC control valve to move to the release position. The TCM calculates torque converter slip speed based on
engine speed and transmission input shaft speed.
Conditions for Running the DTC
P0741
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0742, P2762, P2763, or P2764 are not set.
* Ignition voltage is 8.6 volts or greater.
* The engine run time is greater than 5 seconds.
* The transmission fluid temperature (TFT) is 20-130掳C (68-266掳F).
* The accelerator pedal position signal is valid.
* The throttle position is greater than 8 percent.
* The TCM must receive a valid torque signal from the ECM.
* The engine torque is greater than 50 Nm (36 lb ft).
* The TCC is commanded ON and PWM duty cycle is greater than 60 percent for 5 seconds.
* The following 6L80/6L90 gear ratios are achieved in the specified gear range while the TCC is commanded On:
- The 2nd gear ratio is between 2.19-2.52.
- The 3rd gear ratio is between 1.42-1.63.
- The 4th gear ratio is between 1.07-1.23.
- The 5th gear is between 0.79-0.91.
- The 6th gear is between 0.62-0.71.
* The following 6L50 gear ratios are achieved in the specified gear range while the TCC is commanded On:
- The 2nd gear ratio is between 2.20-2.53.
- The 3rd gear ratio is between 1.44-1.65.
- The 4th gear ratio is between 1.07-1.23.
- The 5th gear is between 0.79-0.91.
- The 6th gear is between 0.62-0.72.
P0742
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0741, P0742, P1751, P2762, P2763, or P2764 are not
set.
* DTC P0742 has not passed this key ON.
* Ignition voltage is between 8.6-18.0 volts.
* The engine run time is greater than 5 seconds.
* The transmission fluid temperature (TFT) is 20-130掳C (68-266掳F).
* The accelerator pedal position signal is valid.
* The throttle position is greater than 8 percent.
* The TCM must receive a valid torque signal from the ECM.
* The engine torque is greater than 115 Nm (85 lb ft).
* The engine speed is greater than 500 RPM.
* The vehicle speed is greater than 16 km/h (10 mph).
* The gear ratio is between 0.62-1.63.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0741
- Torque Converter Clutch (TCC) - Stuck Off
DTC P0742
- Torque Converter Clutch (TCC) - Stuck On
Circuit/System Description
The torque converter clutch (TCC) pressure control (PC) solenoid is part of the control solenoid valve assembly which has no serviceable parts.
The TCC PC solenoid is a normally low pressure control solenoid. The TCC PC solenoid regulates transmission fluid to the TCC regulator valve in
the lower valve body and the TCC control valve in the pump cover. When vehicle operating conditions are appropriate to apply the converter
clutch, the transmission control module (TCM) will increase TCC PC current flow (duty cycle) to the TCC solenoid. The TCC PC solenoid directs
fluid pressure to move the TCC control valve to the apply position, and moves the TCC regulator apply valve to the regulating position. The TCC
regulator valve regulates TCC apply fluid pressure proportional to TCC solenoid pressure. When the TCC is fully applied, the engine is coupled
directly to the transmission. TCC release is accomplished by the TCM decreasing current flow to the TCC PC solenoid. This results in decreasing
the apply pressure which allows the TCC control valve to move to the release position. The TCM calculates torque converter slip speed based on
engine speed and transmission input shaft speed.
Conditions for Running the DTC
P0741
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0742, P2762, P2763, or P2764 are not set.
* Ignition voltage is 8.6 volts or greater.
* The engine run time is greater than 5 seconds.
* The transmission fluid temperature (TFT) is 20-130掳C (68-266掳F).
* The accelerator pedal position signal is valid.
* The throttle position is greater than 8 percent.
* The TCM must receive a valid torque signal from the ECM.
* The engine torque is greater than 50 Nm (36 lb ft).
* The TCC is commanded ON and PWM duty cycle is greater than 60 percent for 5 seconds.
* The following 6L80/6L90 gear ratios are achieved in the specified gear range while the TCC is commanded On:
- The 2nd gear ratio is between 2.19-2.52.
- The 3rd gear ratio is between 1.42-1.63.
- The 4th gear ratio is between 1.07-1.23.
- The 5th gear is between 0.79-0.91.
- The 6th gear is between 0.62-0.71.
* The following 6L50 gear ratios are achieved in the specified gear range while the TCC is commanded On:
- The 2nd gear ratio is between 2.20-2.53.
- The 3rd gear ratio is between 1.44-1.65.
- The 4th gear ratio is between 1.07-1.23.
- The 5th gear is between 0.79-0.91.
- The 6th gear is between 0.62-0.72.
P0742
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0741, P0742, P1751, P2762, P2763, or P2764 are not
set.
* DTC P0742 has not passed this key ON.
* Ignition voltage is between 8.6-18.0 volts.
* The engine run time is greater than 5 seconds.
* The transmission fluid temperature (TFT) is 20-130掳C (68-266掳F).
* The accelerator pedal position signal is valid.
* The throttle position is greater than 8 percent.
* The TCM must receive a valid torque signal from the ECM.
* The engine torque is greater than 115 Nm (85 lb ft).
* The engine speed is greater than 500 RPM.
* The vehicle speed is greater than 16 km/h (10 mph).
* The gear ratio is between 0.62-1.63.
Tuesday, November 17, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2172
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2172
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each of the diagnostic category.
DTC Descriptors
DTC P0601
- Control Module Read Only Memory Performance
DTC P0602
- Control Module Not Programmed
DTC P0603
- Control Module Long Term Memory Reset
DTC P0604
- Control Module Random Access Memory Performance
DTC P0606
- Control Module Processor Performance
DTC P0607
- Control Module Performance
DTC P060D
- Control Module Accelerator Pedal (APP) Position System Circuitry Performance
DTC P062F
- Control Module Long Term Memory Performance
DTC P2610
- Control Module Ignition Off Timer Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM) and the throttle actuator control
(TAC) system. This diagnostic also addresses if the ECM is not programmed.
The ECM monitors its ability to read and write to the memory. It also monitors a timing function. The ECM and the TAC processors are used to
monitor the TAC system data. Both processors monitor the other processors data to verify that the indicated APP calculation is correct. The ECM
performs an intrusive test in order to confirm that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor
2 low momentarily and looking for sensor 1 to also be pulled low.
Conditions for Running the DTCs
P0601, P0604
* The ignition switch is in Run or Crank.
* These DTCs run continuously when the above condition is met.
P0602, P0603, P062F
* The ignition switch is in Run or Crank.
* These DTCs run once per ignition cycle.
P0606, P0607, P060D
* The ignition switch is in Run or Crank.
* The system voltage is more than 6.0 V.
* Reduced Engine Power is not active.
* These DTCs run continuously when the above conditions are met.
P2610
* The intake air temperature is between -40 to +125掳C (-40 to +257掳F).
* DTC P2610 runs once per ignition cycle on ECM power down.
Conditions for Setting the DTCs
The ECM detects an internal failure or incomplete programming for more than 10 s.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each of the diagnostic category.
DTC Descriptors
DTC P0601
- Control Module Read Only Memory Performance
DTC P0602
- Control Module Not Programmed
DTC P0603
- Control Module Long Term Memory Reset
DTC P0604
- Control Module Random Access Memory Performance
DTC P0606
- Control Module Processor Performance
DTC P0607
- Control Module Performance
DTC P060D
- Control Module Accelerator Pedal (APP) Position System Circuitry Performance
DTC P062F
- Control Module Long Term Memory Performance
DTC P2610
- Control Module Ignition Off Timer Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM) and the throttle actuator control
(TAC) system. This diagnostic also addresses if the ECM is not programmed.
The ECM monitors its ability to read and write to the memory. It also monitors a timing function. The ECM and the TAC processors are used to
monitor the TAC system data. Both processors monitor the other processors data to verify that the indicated APP calculation is correct. The ECM
performs an intrusive test in order to confirm that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor
2 low momentarily and looking for sensor 1 to also be pulled low.
Conditions for Running the DTCs
P0601, P0604
* The ignition switch is in Run or Crank.
* These DTCs run continuously when the above condition is met.
P0602, P0603, P062F
* The ignition switch is in Run or Crank.
* These DTCs run once per ignition cycle.
P0606, P0607, P060D
* The ignition switch is in Run or Crank.
* The system voltage is more than 6.0 V.
* Reduced Engine Power is not active.
* These DTCs run continuously when the above conditions are met.
P2610
* The intake air temperature is between -40 to +125掳C (-40 to +257掳F).
* DTC P2610 runs once per ignition cycle on ECM power down.
Conditions for Setting the DTCs
The ECM detects an internal failure or incomplete programming for more than 10 s.
Sunday, November 15, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2109
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2109
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0521
- Engine Oil Pressure (EOP) Sensor Performance
DTC P0522
- Engine Oil Pressure (EOP) Sensor Circuit Low Voltage.
DTC P0523
- Engine Oil Pressure (EOP) Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The engine oil pressure (EOP) sensor changes voltage based on the engine oil pressure. The EOP sensor is a 3-wire sensor comprising of the signal
circuit, the low reference circuit and the 5-volt reference circuit. The engine control module (ECM) supplies 5 volts to the EOP sensor via the 5-volt
reference circuit and provides ground via the EOP low reference circuit. The ECM monitors the signal circuit of the EOP sensor to determine the
EOP sensor voltage is within the normal operating range of approximately 1-4 volts. When the engine oil pressure is high, the EOP sensor voltage
is high and the ECM senses a high signal voltage. When the engine oil pressure is low, the EOP sensor voltage is low and the ECM senses a low
signal voltage. The ECM sends the EOP information to the instrument panel cluster (IPC) via GMLAN serial data message.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
P0521
The ECM detects that the difference between the predicted oil pressure and the actual oil pressure is either less than 47 kPa (6.8 psi) or greater than
50 kPa (7.3 psi).
P0522
* The ECM detects that the EOP sensor signal circuit is less than 0.1 volt.
* The above condition is present for greater than 10 seconds.
P0523
* The ECM detects that the EOP sensor signal circuit is greater than 4.4 volts.
* The above condition is present for greater than 10 seconds.
Action Taken When the DTC Sets
* The ECM records the operating conditions at the time the diagnostics test fails. The ECM displays this information in the Failure Records on
the scan tool.
* The IPC illuminates the EOP indicator.
Conditions for Clearing the DTC
* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 40 malfunction-free warm-up cycles.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0521
- Engine Oil Pressure (EOP) Sensor Performance
DTC P0522
- Engine Oil Pressure (EOP) Sensor Circuit Low Voltage.
DTC P0523
- Engine Oil Pressure (EOP) Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The engine oil pressure (EOP) sensor changes voltage based on the engine oil pressure. The EOP sensor is a 3-wire sensor comprising of the signal
circuit, the low reference circuit and the 5-volt reference circuit. The engine control module (ECM) supplies 5 volts to the EOP sensor via the 5-volt
reference circuit and provides ground via the EOP low reference circuit. The ECM monitors the signal circuit of the EOP sensor to determine the
EOP sensor voltage is within the normal operating range of approximately 1-4 volts. When the engine oil pressure is high, the EOP sensor voltage
is high and the ECM senses a high signal voltage. When the engine oil pressure is low, the EOP sensor voltage is low and the ECM senses a low
signal voltage. The ECM sends the EOP information to the instrument panel cluster (IPC) via GMLAN serial data message.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
P0521
The ECM detects that the difference between the predicted oil pressure and the actual oil pressure is either less than 47 kPa (6.8 psi) or greater than
50 kPa (7.3 psi).
P0522
* The ECM detects that the EOP sensor signal circuit is less than 0.1 volt.
* The above condition is present for greater than 10 seconds.
P0523
* The ECM detects that the EOP sensor signal circuit is greater than 4.4 volts.
* The above condition is present for greater than 10 seconds.
Action Taken When the DTC Sets
* The ECM records the operating conditions at the time the diagnostics test fails. The ECM displays this information in the Failure Records on
the scan tool.
* The IPC illuminates the EOP indicator.
Conditions for Clearing the DTC
* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 40 malfunction-free warm-up cycles.
Thursday, November 12, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2037
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2037
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0351
- Ignition Coil 1 Control Circuit
DTC P0352
- Ignition Coil 2 Control Circuit
DTC P0353
- Ignition Coil 3 Control Circuit
DTC P0354
- Ignition Coil 4 Control Circuit
DTC P0355
- Ignition Coil 5 Control Circuit
DTC P0356
- Ignition Coil 6 Control Circuit
DTC P0357
- Ignition Coil 7 Control Circuit
DTC P0358
- Ignition Coil 8 Control Circuit
Diagnostic Fault Information
Circuit/System Description
The ignition system on this engine uses an individual coil/module for each cylinder. The engine control module (ECM) controls the spark event for
each cylinder through the eight individual ignition control (IC) circuits. When the ECM commands the IC circuit ON, electrical current will flow
through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM will command the IC circuit
OFF, interrupting current flow through the primary winding. The magnetic field created by the primary winding will collapse across the secondary
coil windings, producing a high voltage across the spark plug electrodes. The ECM uses information from the crankshaft position (CKP) sensor,
and the camshaft position (CMP) sensor for sequencing and timing of the spark events. Each ignition coil/module assembly has the following
circuits:
* Ignition voltage
* Ground
* Ignition control (IC)
* Low reference
If the ECM detects that the IC circuit has an incorrect voltage level, DTC P0351-P0358 will set.
Conditions for Running the DTC
* The ignition is ON.
* DTC P0351-P0358 runs continuously when the above condition is met.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0351
- Ignition Coil 1 Control Circuit
DTC P0352
- Ignition Coil 2 Control Circuit
DTC P0353
- Ignition Coil 3 Control Circuit
DTC P0354
- Ignition Coil 4 Control Circuit
DTC P0355
- Ignition Coil 5 Control Circuit
DTC P0356
- Ignition Coil 6 Control Circuit
DTC P0357
- Ignition Coil 7 Control Circuit
DTC P0358
- Ignition Coil 8 Control Circuit
Diagnostic Fault Information
Circuit/System Description
The ignition system on this engine uses an individual coil/module for each cylinder. The engine control module (ECM) controls the spark event for
each cylinder through the eight individual ignition control (IC) circuits. When the ECM commands the IC circuit ON, electrical current will flow
through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM will command the IC circuit
OFF, interrupting current flow through the primary winding. The magnetic field created by the primary winding will collapse across the secondary
coil windings, producing a high voltage across the spark plug electrodes. The ECM uses information from the crankshaft position (CKP) sensor,
and the camshaft position (CMP) sensor for sequencing and timing of the spark events. Each ignition coil/module assembly has the following
circuits:
* Ignition voltage
* Ground
* Ignition control (IC)
* Low reference
If the ECM detects that the IC circuit has an incorrect voltage level, DTC P0351-P0358 will set.
Conditions for Running the DTC
* The ignition is ON.
* DTC P0351-P0358 runs continuously when the above condition is met.
Tuesday, November 10, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2006
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2006
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0324
- Knock Sensor (KS) Module Performance
DTC P0325
- Knock Sensor (KS) Circuit Bank 1
DTC P0326
- Knock Sensor (KS) Performance
DTC P0327
- Knock Sensor (KS) Circuit Low Voltage Bank 1
DTC P0328
- Knock Sensor (KS) Circuit High Voltage Bank 1
DTC P0330
- Knock Sensor (KS) Circuit Bank 2
DTC P0332
- Knock Sensor (KS) Circuit Low Voltage Bank 2
DTC P0333
- Knock Sensor (KS) Circuit High Voltage Bank 2
Diagnostic Fault Information
Circuit/System Description
The knock sensor (KS) system enables the engine control module (ECM) to control the ignition timing for the best possible performance while
protecting the engine from potentially damaging levels of detonation. The ECM monitors 2 separate KS, one on each side of the engine block. Each
KS produces an AC voltage that varies, depending on the vibration levels detected during engine operation. The ECM receives the KS signal
through 2 isolated signal circuits for each KS. The ECM adjusts the spark timing based on the amplitude and frequency of each KS signal. The
ECM learns a minimum noise level for each sensor at idle speeds, and uses calibrated noise level values for the rest of the RPM range. The ECM
should monitor a normal KS signal within the noise channel.
Conditions for Running the DTC
P0324
* DTC P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are not set.
* The engine speed is at least 400 RPM.
* DTC P0324 runs continuously when the above conditions are met.
P0325 or P0330
* DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are not set.
* The engine speed is at least 400 RPM.
* The engine coolant temperature (ECT) is warmer than -40掳C (-40掳F).
* The engine run time is at least 2 s.
* The power take-off (PTO) is not active.
* DTCs P0325 and P0330 run continuously when the above conditions are met.
P0326
* DTC P0068, P0606, P1516, P2101, P2135, or P2176 are not set.
* The engine speed is at least 400 RPM.
* The MAP is at least 10 kPa.
* DTC P0324 runs continuously when the above conditions are met.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0324
- Knock Sensor (KS) Module Performance
DTC P0325
- Knock Sensor (KS) Circuit Bank 1
DTC P0326
- Knock Sensor (KS) Performance
DTC P0327
- Knock Sensor (KS) Circuit Low Voltage Bank 1
DTC P0328
- Knock Sensor (KS) Circuit High Voltage Bank 1
DTC P0330
- Knock Sensor (KS) Circuit Bank 2
DTC P0332
- Knock Sensor (KS) Circuit Low Voltage Bank 2
DTC P0333
- Knock Sensor (KS) Circuit High Voltage Bank 2
Diagnostic Fault Information
Circuit/System Description
The knock sensor (KS) system enables the engine control module (ECM) to control the ignition timing for the best possible performance while
protecting the engine from potentially damaging levels of detonation. The ECM monitors 2 separate KS, one on each side of the engine block. Each
KS produces an AC voltage that varies, depending on the vibration levels detected during engine operation. The ECM receives the KS signal
through 2 isolated signal circuits for each KS. The ECM adjusts the spark timing based on the amplitude and frequency of each KS signal. The
ECM learns a minimum noise level for each sensor at idle speeds, and uses calibrated noise level values for the rest of the RPM range. The ECM
should monitor a normal KS signal within the noise channel.
Conditions for Running the DTC
P0324
* DTC P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are not set.
* The engine speed is at least 400 RPM.
* DTC P0324 runs continuously when the above conditions are met.
P0325 or P0330
* DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are not set.
* The engine speed is at least 400 RPM.
* The engine coolant temperature (ECT) is warmer than -40掳C (-40掳F).
* The engine run time is at least 2 s.
* The power take-off (PTO) is not active.
* DTCs P0325 and P0330 run continuously when the above conditions are met.
P0326
* DTC P0068, P0606, P1516, P2101, P2135, or P2176 are not set.
* The engine speed is at least 400 RPM.
* The MAP is at least 10 kPa.
* DTC P0324 runs continuously when the above conditions are met.
Saturday, November 7, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1926
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1926
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0201
- Injector 1 Control Circuit
DTC P0202
- Injector 2 Control Circuit
DTC P0203
- Injector 3 Control Circuit
DTC P0204
- Injector 4 Control Circuit
DTC P0205
- Injector 5 Control Circuit
DTC P0206
- Injector 6 Control Circuit
DTC P0207
- Injector 7 Control Circuit
DTC P0208
- Injector 8 Control Circuit
Diagnostic Fault Information
Circuit/System Description
The control module enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The control
module controls each fuel injector by grounding the control circuit via a solid state device called a driver. The control module monitors the status of
each driver.
Conditions for Running the DTC
* The engine is running.
* The ignition voltage is greater than 11 V.
* DTC P0201-P0208 runs continuously when the above conditions are met.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0201
- Injector 1 Control Circuit
DTC P0202
- Injector 2 Control Circuit
DTC P0203
- Injector 3 Control Circuit
DTC P0204
- Injector 4 Control Circuit
DTC P0205
- Injector 5 Control Circuit
DTC P0206
- Injector 6 Control Circuit
DTC P0207
- Injector 7 Control Circuit
DTC P0208
- Injector 8 Control Circuit
Diagnostic Fault Information
Circuit/System Description
The control module enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The control
module controls each fuel injector by grounding the control circuit via a solid state device called a driver. The control module monitors the status of
each driver.
Conditions for Running the DTC
* The engine is running.
* The ignition voltage is greater than 11 V.
* DTC P0201-P0208 runs continuously when the above conditions are met.
Friday, October 30, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1731
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1731
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC P071A
- Transmission Tow Mode Switch Circuit
Circuit/System Description
Tow/haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the
tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the transmission control module
(TCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul
mode and returns the transmission to a normal shift pattern.
Conditions for Running the DTC
* No Transmission Mode Switch Signal DTC P1762.
* The engine speed is greater than 500 RPM for 5 seconds.
* The system voltage is 8-18 volts.
Conditions for Setting the DTC
The Tow Mode switch remains closed, low voltage, for 600 seconds.
Action Taken When the DTC Sets
DTC P071A is a Type C DTC.
Conditions for Clearing the DTC
DTC P071A is a Type C DTC.
Diagnostic Aids
If the electrical circuit tests are OK and the shift pattern is not occurring, there may be a mechanical/hydraulic condition that prevents operation.
Refer to Symptoms - Automatic Transmission (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Symptom Related Diagnostic Procedures/6L45/6L50/6L80/6L90 - Automatic Transmission/Symptoms - Automatic Transmission).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Description and Operation
Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Electronic Component Description)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC P071A
- Transmission Tow Mode Switch Circuit
Circuit/System Description
Tow/haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the
tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the transmission control module
(TCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul
mode and returns the transmission to a normal shift pattern.
Conditions for Running the DTC
* No Transmission Mode Switch Signal DTC P1762.
* The engine speed is greater than 500 RPM for 5 seconds.
* The system voltage is 8-18 volts.
Conditions for Setting the DTC
The Tow Mode switch remains closed, low voltage, for 600 seconds.
Action Taken When the DTC Sets
DTC P071A is a Type C DTC.
Conditions for Clearing the DTC
DTC P071A is a Type C DTC.
Diagnostic Aids
If the electrical circuit tests are OK and the shift pattern is not occurring, there may be a mechanical/hydraulic condition that prevents operation.
Refer to Symptoms - Automatic Transmission (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Symptom Related Diagnostic Procedures/6L45/6L50/6L80/6L90 - Automatic Transmission/Symptoms - Automatic Transmission).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Description and Operation
Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Electronic Component Description)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Wednesday, October 28, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1698
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1698
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0030
- HO2S Heater Control Circuit Bank 1 Sensor 1
DTC P0036
- HO2S Heater Control Circuit Bank 1 Sensor 2
DTC P0050
- HO2S Heater Control Circuit Bank 2 Sensor 1
DTC P0053
- HO2S Heater Resistance Bank 1 Sensor 1
DTC P0054
- HO2S Heater Resistance Bank 1 Sensor 2
DTC P0056
- HO2S Heater Control Circuit Bank 2 Sensor 2
DTC P0059
- HO2S Heater Resistance Bank 2 Sensor 1
DTC P0060
- HO2S Heater Resistance Bank 2 Sensor 2
DTC P0135
- HO2S Heater Performance Bank 1 Sensor 1
DTC P0141
- HO2S Heater Performance Bank 1 Sensor 2
DTC P0155
- HO2S Heater Performance Bank 2 Sensor 1
DTC P0161
- HO2S Heater Performance Bank 2 Sensor 2
Diagnostic Fault Information
Typical Scan Tool Data
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0030
- HO2S Heater Control Circuit Bank 1 Sensor 1
DTC P0036
- HO2S Heater Control Circuit Bank 1 Sensor 2
DTC P0050
- HO2S Heater Control Circuit Bank 2 Sensor 1
DTC P0053
- HO2S Heater Resistance Bank 1 Sensor 1
DTC P0054
- HO2S Heater Resistance Bank 1 Sensor 2
DTC P0056
- HO2S Heater Control Circuit Bank 2 Sensor 2
DTC P0059
- HO2S Heater Resistance Bank 2 Sensor 1
DTC P0060
- HO2S Heater Resistance Bank 2 Sensor 2
DTC P0135
- HO2S Heater Performance Bank 1 Sensor 1
DTC P0141
- HO2S Heater Performance Bank 1 Sensor 2
DTC P0155
- HO2S Heater Performance Bank 2 Sensor 1
DTC P0161
- HO2S Heater Performance Bank 2 Sensor 2
Diagnostic Fault Information
Typical Scan Tool Data
Tuesday, October 27, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1655
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1655
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F0
- Engine Torque Delivered Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated engine torque delivered calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON for 5 seconds.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F0 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F0 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P15F0.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F1
DTC P15F1
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P15F0
- Engine Torque Delivered Circuit
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors
its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated engine torque delivered calculation is
correct.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON for 5 seconds.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected an internal malfunction.
Action Taken When the DTC Sets
* DTC P15F0 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P15F0 is a Type A DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P15F0.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P15F1
DTC P15F1
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Monday, October 26, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1644
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1644
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1633
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1633
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Bank 1 Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Bank 1 Sensor 2
DTC P013C
- HO2S Slow Response Rich to Lean Bank 2 Sensor 2
DTC P013D
- HO2S Slow Response Lean to Rich Bank 2 Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2
DTC P014A
- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
DTC P014B
- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the
HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a
range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module
Wednesday, September 9, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 90
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 90
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC B0010 00
- Reverse Gear Signal Circuit
Circuit/System Description
The body control module (BCM) supplies B+ to the rearview camera when the transmission is placed into reverse.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts
Conditions for Setting the DTC
The BCM detects there is a short to ground or an open circuit.
Action Taken When the DTC Sets
Rearview camera is disabled.
Conditions for Clearing
* The DTC will transition to history when the fault is no longer present.
* A history DTC will clear after 100 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Object Detection Description and Operation (UFT) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Description and Operation/Object Detection Description and Operation (UFT))Object Detection Description and Operation (UVC) (See:
Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and
Operation (UVC))Object Detection Description and Operation (UD7) (See: Accessories and Optional Equipment/Collision Avoidance and
Parking Assist Systems/Description and Operation/Object Detection Description and Operation (UD7))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the rearview camera.
2. Ignition ON, park brake applied, transmission in REVERSE, test for B+ between the B+ circuit terminal 3 and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. If all circuits test normal, replace the BCM.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC B0010 00
- Reverse Gear Signal Circuit
Circuit/System Description
The body control module (BCM) supplies B+ to the rearview camera when the transmission is placed into reverse.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts
Conditions for Setting the DTC
The BCM detects there is a short to ground or an open circuit.
Action Taken When the DTC Sets
Rearview camera is disabled.
Conditions for Clearing
* The DTC will transition to history when the fault is no longer present.
* A history DTC will clear after 100 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Object Detection Description and Operation (UFT) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Description and Operation/Object Detection Description and Operation (UFT))Object Detection Description and Operation (UVC) (See:
Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and
Operation (UVC))Object Detection Description and Operation (UD7) (See: Accessories and Optional Equipment/Collision Avoidance and
Parking Assist Systems/Description and Operation/Object Detection Description and Operation (UD7))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the rearview camera.
2. Ignition ON, park brake applied, transmission in REVERSE, test for B+ between the B+ circuit terminal 3 and ground.
瀚慖f less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
3. If all circuits test normal, replace the BCM.
Friday, July 24, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2593
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2593
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC P2771
- Four Wheel Drive (4WD) Low Switch Circuit
Circuit/System Description
The four wheel drive (4WD) low circuit consists of the engine control module (ECM), a transfer case control module and the circuit wiring. The
transfer case control module controls the 4WD low signal circuit. When the operator selects 4WD low, the transfer case control module grounds the
signal circuit, and the 4WD low signal voltage on the circuit changes from ignition voltage to zero volts. The ECM then compensates for transfer
case gear reduction in the transmission output shaft speed (OSS) sensor signal. The ECM uses the transmission OSS sensor signal to adjust shift
points, line pressure and torque converter clutch (TCC) scheduling.
Conditions for Running the DTC
* No throttle position (TP) sensor DTCs P0122, or P0123.
* No OSS assembly DTCs P0722 or P0723.
* No cam or crank sensor DTCs.
* The system voltage is 9-18 volts.
* The engine speed is 1,000-5,500 RPM for at least 30 seconds.
* The vehicle speed is at least 40 km/h (25 mph).
* The TP angle is 5-40 percent.
* The gear range is not PARK, NEUTRAL or REVERSE.
* The TFT is -20 to +130掳C (-4 to +266掳F).
Conditions for Setting the DTC
Condition 1
* The 4WD low switch is not in 4WD low, open/12 volts.
* The Transfer Case Ratio is 2.64-2.9 for 2 seconds.
* Both conditions must be met twice.
Condition 2
* The 4WD low switch is in 4WD low.
* The Transfer Case Ratio is 0.8-1.75 for 2 seconds.
Action Taken When the DTC Sets
* DTC P2771 is a Type B DTC.
* The ECM commands a normal shift pattern, not a 4WD low shift pattern.
Conditions for Clearing the DTC
DTC P2771 is a Type B DTC.
Diagnostic Aids
A malfunctioning speed sensor could cause DTC P2771 to set.
* Verify that the input speed sensor (ISS) and the OSS are functioning properly.
* In 3rd gear at approximately 64 km/h (40 mph), command TCC ON. If functioning properly the OSS will track ISS and the engine RPM. If
not refer to DTC P0716 for the ISS and DTC P0723 for the OSS.
* If the speed sensors pass testing, refer to Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component
Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor
Connections).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC P2771
- Four Wheel Drive (4WD) Low Switch Circuit
Circuit/System Description
The four wheel drive (4WD) low circuit consists of the engine control module (ECM), a transfer case control module and the circuit wiring. The
transfer case control module controls the 4WD low signal circuit. When the operator selects 4WD low, the transfer case control module grounds the
signal circuit, and the 4WD low signal voltage on the circuit changes from ignition voltage to zero volts. The ECM then compensates for transfer
case gear reduction in the transmission output shaft speed (OSS) sensor signal. The ECM uses the transmission OSS sensor signal to adjust shift
points, line pressure and torque converter clutch (TCC) scheduling.
Conditions for Running the DTC
* No throttle position (TP) sensor DTCs P0122, or P0123.
* No OSS assembly DTCs P0722 or P0723.
* No cam or crank sensor DTCs.
* The system voltage is 9-18 volts.
* The engine speed is 1,000-5,500 RPM for at least 30 seconds.
* The vehicle speed is at least 40 km/h (25 mph).
* The TP angle is 5-40 percent.
* The gear range is not PARK, NEUTRAL or REVERSE.
* The TFT is -20 to +130掳C (-4 to +266掳F).
Conditions for Setting the DTC
Condition 1
* The 4WD low switch is not in 4WD low, open/12 volts.
* The Transfer Case Ratio is 2.64-2.9 for 2 seconds.
* Both conditions must be met twice.
Condition 2
* The 4WD low switch is in 4WD low.
* The Transfer Case Ratio is 0.8-1.75 for 2 seconds.
Action Taken When the DTC Sets
* DTC P2771 is a Type B DTC.
* The ECM commands a normal shift pattern, not a 4WD low shift pattern.
Conditions for Clearing the DTC
DTC P2771 is a Type B DTC.
Diagnostic Aids
A malfunctioning speed sensor could cause DTC P2771 to set.
* Verify that the input speed sensor (ISS) and the OSS are functioning properly.
* In 3rd gear at approximately 64 km/h (40 mph), command TCC ON. If functioning properly the OSS will track ISS and the engine RPM. If
not refer to DTC P0716 for the ISS and DTC P0723 for the OSS.
* If the speed sensors pass testing, refer to Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component
Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor
Connections).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Thursday, July 23, 2020
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2567
2010 Cadillac Truck Escalade RWD V8-6.2L Page 2567
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
* The transmission output shaft speed is equal to or greater than 200 RPM.
* 1-2-3-4 clutch is commanded OFF.
Conditions for Setting the DTC
P2723
The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is commanded ON for 0.5 seconds and either fail case
below is achieved:
Condition 1
* Output shaft speed is greater than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
Condition 2
* Output shaft speed is less than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
P2724
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is commanded OFF for 0.5 seconds and the following
is achieved:
* The 1-2-3-4 clutch commanded pressure is 0 kPa for a calculated amount of time.
* The transmission input shaft speed is less than 40 RPM from the anticipated input shaft speed.
* The output shaft speed is greater than 60 RPM.
Action Taken When the DTC Sets
* DTCs P2723 and P2724 are Type A DTCs.
* The TCM freezes transmission adaptive functions.
* DTC P2723 defaults to Reverse, Park, Neutral, 5th, or 6th gear.
* DTC P2724 defaults to Reverse, Park, Neutral, 1st, or 2nd gear.
Conditions for Clearing the DIC/DTC
DTCs P2723 and P2724 are Type A DTCs.
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P2723
- Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724
- Clutch Pressure Control (PC) Solenoid 5 - Stuck On
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 5
regulates transmission fluid pressure to the 1-2-3-4 clutch regulator valve which controls pressure to the 1-2-3-4 clutch. The TCM calculates gear
ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected
transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2723
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input shaft speed is greater than 60 RPM.
* 1-2-3-4 clutch is commanded ON.
P2724
* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.
* The transmission input speed is equal to or greater than 200 RPM.
* The transmission output shaft speed is equal to or greater than 200 RPM.
* 1-2-3-4 clutch is commanded OFF.
Conditions for Setting the DTC
P2723
The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is commanded ON for 0.5 seconds and either fail case
below is achieved:
Condition 1
* Output shaft speed is greater than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
Condition 2
* Output shaft speed is less than 60 RPM.
* The transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.
P2724
The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is commanded OFF for 0.5 seconds and the following
is achieved:
* The 1-2-3-4 clutch commanded pressure is 0 kPa for a calculated amount of time.
* The transmission input shaft speed is less than 40 RPM from the anticipated input shaft speed.
* The output shaft speed is greater than 60 RPM.
Action Taken When the DTC Sets
* DTCs P2723 and P2724 are Type A DTCs.
* The TCM freezes transmission adaptive functions.
* DTC P2723 defaults to Reverse, Park, Neutral, 5th, or 6th gear.
* DTC P2724 defaults to Reverse, Park, Neutral, 1st, or 2nd gear.
Conditions for Clearing the DIC/DTC
DTCs P2723 and P2724 are Type A DTCs.
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