2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2111
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup and programming
P0522
DTC P0521, P0522, or P0523
Diagnostic Instructions
* 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.
Showing posts with label setup and programming. Show all posts
Showing posts with label setup and programming. Show all posts
Sunday, November 15, 2020
Friday, November 13, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2082
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2082
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup and programming
P0455
DTC P0455
Diagnostic Instructions
* 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 P0455
- Evaporative Emission (EVAP) System Large Leak Detected
Circuit/System Description
The ECM tests the Evaporative Emission (EVAP) System for a large leak or restrictions to the purge path in the EVAP system. When the enabling
criteria has been met the ECM commands the EVAP canister vent solenoid valve ON and the EVAP canister purge solenoid valve ON, allowing
vacuum into the EVAP system. The ECM monitors the fuel tank pressure (FTP) sensor voltage to verify that the system is able to reach a
predetermined level of vacuum within a set amount of time.
Conditions for Running the DTC
* Before the ECM can report DTC P0455 failed, DTC P0496 must run and pass.
* DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451,
P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128,
P2135, P2138 are not set.
* The ignition voltage is between 11-18 volts.
* The barometric pressure (BARO) is more than 74 kPa.
* The fuel level is between 15-85 percent.
* The engine coolant temperature (ECT) is less than 35掳C (95掳F).
* The intake air temperature (IAT) is between 4-30掳C (39-86掳F).
* DTC P0455 runs once per cold start when the above conditions are met.
Conditions for Setting the DTC
The EVAP system is not able to achieve or maintain a calibrated level of vacuum within a set amount of time.
Action Taken When the DTC Sets
DTC P0455 is a Type B DTC.
Conditions for Clearing the MIL/DTC
DTC P0455 is a Type B DTC.
Diagnostic Aids
* Inspect for a loose, missing, damaged, or incorrect fuel fill cap.
* Inspect for a damaged fuel filler neck seal surface.
* A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister, or vapor pipe, can cause this DTC to set.
* The EVAP system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is
injected. For example, when injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is
observed, then close the system and continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to
allow the system to fill faster.
* To help locate intermittent leaks using the J 41413-200, move all EVAP components while observing smoke with the J 41413-SPT.
* Individual components can be isolated and tested using adapters in the J 41413-300.
* A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type of leak may be detected by using
the scan tool Purge/Seal function to create a vacuum in the EVAP system and then observe the FTP parameter for vacuum decay.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup and programming
P0455
DTC P0455
Diagnostic Instructions
* 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 P0455
- Evaporative Emission (EVAP) System Large Leak Detected
Circuit/System Description
The ECM tests the Evaporative Emission (EVAP) System for a large leak or restrictions to the purge path in the EVAP system. When the enabling
criteria has been met the ECM commands the EVAP canister vent solenoid valve ON and the EVAP canister purge solenoid valve ON, allowing
vacuum into the EVAP system. The ECM monitors the fuel tank pressure (FTP) sensor voltage to verify that the system is able to reach a
predetermined level of vacuum within a set amount of time.
Conditions for Running the DTC
* Before the ECM can report DTC P0455 failed, DTC P0496 must run and pass.
* DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451,
P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128,
P2135, P2138 are not set.
* The ignition voltage is between 11-18 volts.
* The barometric pressure (BARO) is more than 74 kPa.
* The fuel level is between 15-85 percent.
* The engine coolant temperature (ECT) is less than 35掳C (95掳F).
* The intake air temperature (IAT) is between 4-30掳C (39-86掳F).
* DTC P0455 runs once per cold start when the above conditions are met.
Conditions for Setting the DTC
The EVAP system is not able to achieve or maintain a calibrated level of vacuum within a set amount of time.
Action Taken When the DTC Sets
DTC P0455 is a Type B DTC.
Conditions for Clearing the MIL/DTC
DTC P0455 is a Type B DTC.
Diagnostic Aids
* Inspect for a loose, missing, damaged, or incorrect fuel fill cap.
* Inspect for a damaged fuel filler neck seal surface.
* A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister, or vapor pipe, can cause this DTC to set.
* The EVAP system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is
injected. For example, when injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is
observed, then close the system and continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to
allow the system to fill faster.
* To help locate intermittent leaks using the J 41413-200, move all EVAP components while observing smoke with the J 41413-SPT.
* Individual components can be isolated and tested using adapters in the J 41413-300.
* A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type of leak may be detected by using
the scan tool Purge/Seal function to create a vacuum in the EVAP system and then observe the FTP parameter for vacuum decay.
Saturday, April 25, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 275
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 275
replacement, setup and programming
B251D
DTC B251A-B251F
Diagnostic Instructions
* 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 B251A 01
- All Door Unlatch Circuit Short to Battery
DTC B251A 02
- All Door Unlatch Circuit Short to Ground
DTC B251B 02
- Driver Door Unlatch High Control Circuit Short to Ground
DTC B251B 04
- Driver Door Unlatch High Control Circuit Open
DTC B251C 04
- Passenger Door Unlatch High Control Circuit Open
DTC B251D 04
- Left Rear Door Unlatch High Control Circuit Open
DTC B251E 04
- Right Rear Door Unlatch High Control Circuit Open
Diagnostic Fault Information
Circuit/System Description
The system is designed so that when the operator approaches a locked vehicle with the keyless entry transmitter, the keyless entry control module
will detect the keyless entry transmitter and when an exterior door handle is pulled the keyless entry control module will command all doors to
unlock and the door to unlatch allowing the door to be pulled open.
Wednesday, January 1, 2020
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 883
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 883
Control Module References (See: Testing and Inspection/Programming and Relearning)for module replacement, setup and programming
C1208
DTC C1207-C1210, C1221-C1228, or C1232-C1235
Diagnostic Instructions
* 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 C1207 00
- Left Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1208 00
- Right Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1209 00
- Left Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1210 00
- Right Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1221 00
- Left Front Wheel Speed Sensor Circuit Malfunction
DTC C1222 00
- Right Front Wheel Speed Sensor Circuit Malfunction
DTC C1223 00
- Left Rear Wheel Speed Sensor Circuit Malfunction
DTC C1224 00
- Right Rear Wheel Speed Sensor Circuit Malfunction
DTC C1225 00
- Left Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1226 00
- Right Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1227 00
- Left Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1228 00
- Right Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1232 00
- Left Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1233 00
- Right Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1234 00
- Left Rear Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1235 00
- Right Rear Wheel Speed Sensor Circuit Low Input Malfunction
Circuit/System Description
The wheel speeds are detected by active wheel speed sensors. Each wheel speed sensor receives a 12 V reference voltage from the electronic brake
control module (EBCM) and provides an alternating current square wave signal to the EBCM. As the wheel spins, the EBCM uses the frequency of
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