2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2612
Typical Scan Tool Data
Circuit/System Description
The cylinder deactivation system is used to deactivate 4 cylinders of the engine under light load driving conditions. The engine control module
(ECM) commands the cylinder deactivation solenoids ON to deactivate engine cylinders 1, 7, 6, and 4, switching to 4 cylinders or V4 mode. The
cylinder deactivation solenoids controls the oil flow to the appropriate valve lifters. The engine operates on 8 cylinders or V8 mode, during engine
starting, engine idling, and medium to heavy throttle conditions.
Ignition voltage is supplied directly to the 4 cylinder deactivation solenoids. The engine control module (ECM) controls the 4 cylinder deactivation
solenoids by grounding the control circuit with a solid state device called a driver.
Conditions for Running the DTC
* The engine speed is greater than 400 RPM.
* The ignition voltage is between 9-18 volts.
* DTC P3401, P3425, P3441, and P3449 runs continuously when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.
Action Taken When the DTC Sets
* DTC P3401, P3425, P3441, and P3449 are Type B DTCs.
* The engine will return to V8 mode.
* The fuel injector will turn OFF for the cylinder that has a cylinder deactivation DTC set, resulting in an engine misfire.
Conditions for Clearing the DTC
DTC P3401, P3425, P3441, and P3449 are Type B DTCs.
Showing posts with label Typical Scan Tool Data. Show all posts
Showing posts with label Typical Scan Tool Data. Show all posts
Saturday, December 5, 2020
Friday, December 4, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2582
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2582
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly which has no serviceable parts. The normally low PC
solenoid 5 regulates and directs oil pressure to the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve. Increasing PC solenoid 5 pressure
increases pressure to the 1-2-3-4 clutch. The TCM varies the current to the PC solenoid 5 through a low side driver. Increasing the current to PC
solenoid 5 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to PC solenoid 5 decreases oil pressure by
opening the exhaust port. PC solenoid 5 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and
components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will
reset.
Conditions for Running the DTC
P2728, P2729, or P2730
* DTCs P2728, P2729, or P2730 have not set this ignition.
* The ignition voltage is 8.6 volts or greater.
* The engine speed is 400 RPM or greater for 5 seconds.
* The clutch PC solenoid 5 is commanded ON.
Conditions for Setting the DTC
P2728
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid 5 control circuit where the measured clutch PC solenoid
5 current does not equal the commanded clutch PC solenoid 5 current for 5 seconds.
P2729
The TCM detects a short to ground on the clutch PC solenoid 5 control circuit for 1 second.
P2730
The TCM detects an open or short to voltage on the clutch PC solenoid 5 control circuit for 1 second.
Action Taken When the DTC Sets
P2728
* DTC P2728 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
P2729
* DTC P2729 is a Type A DTC.
* The transmission defaults to 2nd gear or reverse gear.
* The TCM forces TCC OFF.
* The TCM freezes transmission adaptive functions.
* The TCM commands maximum line pressure.
* The TCM enables Torque management.
* The TCM inhibits TAP Up/Down function.
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly which has no serviceable parts. The normally low PC
solenoid 5 regulates and directs oil pressure to the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve. Increasing PC solenoid 5 pressure
increases pressure to the 1-2-3-4 clutch. The TCM varies the current to the PC solenoid 5 through a low side driver. Increasing the current to PC
solenoid 5 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to PC solenoid 5 decreases oil pressure by
opening the exhaust port. PC solenoid 5 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and
components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will
reset.
Conditions for Running the DTC
P2728, P2729, or P2730
* DTCs P2728, P2729, or P2730 have not set this ignition.
* The ignition voltage is 8.6 volts or greater.
* The engine speed is 400 RPM or greater for 5 seconds.
* The clutch PC solenoid 5 is commanded ON.
Conditions for Setting the DTC
P2728
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid 5 control circuit where the measured clutch PC solenoid
5 current does not equal the commanded clutch PC solenoid 5 current for 5 seconds.
P2729
The TCM detects a short to ground on the clutch PC solenoid 5 control circuit for 1 second.
P2730
The TCM detects an open or short to voltage on the clutch PC solenoid 5 control circuit for 1 second.
Action Taken When the DTC Sets
P2728
* DTC P2728 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
P2729
* DTC P2729 is a Type A DTC.
* The transmission defaults to 2nd gear or reverse gear.
* The TCM forces TCC OFF.
* The TCM freezes transmission adaptive functions.
* The TCM commands maximum line pressure.
* The TCM enables Torque management.
* The TCM inhibits TAP Up/Down function.
Thursday, December 3, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2561
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2561
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. The normally low PC
solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing PC solenoid 4 pressure, increases pressure to the 2-6 clutch
regulator valve. The TCM varies the current to the PC solenoid 4 through a low side driver. Increasing the current to PC solenoid 4 increases oil
pressure by closing OFF the solenoid exhaust port. Decreasing the current to PC solenoid 4 decreases oil pressure by opening the exhaust port. PC
solenoid 4 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current
flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected the HSD will reset.
Conditions for Running the DTC
P2719, P2720, or P2721
* DTCs P2719, P2720, or P2721 have not set this ignition.
* The ignition voltage is 8.6 volts or greater.
* The engine speed is 500 RPM or greater, for 5 seconds.
* The clutch PC solenoid 4 is commanded ON.
Conditions for Setting the DTC
P2719
The TCM detects an internal electrical malfunction on the clutch PC solenoid 4 control circuit where the measured PC solenoid 4 current does not
equal the commanded clutch PC solenoid 4 current for 5 seconds.
P2720
The TCM detects a short to ground on the clutch PC solenoid 4 control circuit for 1 second.
P2721
The TCM detects an open or short to voltage on the clutch PC solenoid 4 control circuit for 1 second.
Action Taken When the DTC Sets
P2719
* DTC P2719 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
P2720
* DTC P2720 is a Type A DTC.
* The TCM defaults the transmission to a limited shift pattern utilizing 2nd gear and reverse gear.
* The TCM forces TCC OFF.
* The TCM freezes transmission adaptive functions.
* The TCM commands maximum line pressure.
* The TCM enables Torque management.
* The TCM inhibits TAP Up/Down function.
* The TCM inhibits manual shifting of forward gears.
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. The normally low PC
solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing PC solenoid 4 pressure, increases pressure to the 2-6 clutch
regulator valve. The TCM varies the current to the PC solenoid 4 through a low side driver. Increasing the current to PC solenoid 4 increases oil
pressure by closing OFF the solenoid exhaust port. Decreasing the current to PC solenoid 4 decreases oil pressure by opening the exhaust port. PC
solenoid 4 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current
flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected the HSD will reset.
Conditions for Running the DTC
P2719, P2720, or P2721
* DTCs P2719, P2720, or P2721 have not set this ignition.
* The ignition voltage is 8.6 volts or greater.
* The engine speed is 500 RPM or greater, for 5 seconds.
* The clutch PC solenoid 4 is commanded ON.
Conditions for Setting the DTC
P2719
The TCM detects an internal electrical malfunction on the clutch PC solenoid 4 control circuit where the measured PC solenoid 4 current does not
equal the commanded clutch PC solenoid 4 current for 5 seconds.
P2720
The TCM detects a short to ground on the clutch PC solenoid 4 control circuit for 1 second.
P2721
The TCM detects an open or short to voltage on the clutch PC solenoid 4 control circuit for 1 second.
Action Taken When the DTC Sets
P2719
* DTC P2719 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
P2720
* DTC P2720 is a Type A DTC.
* The TCM defaults the transmission to a limited shift pattern utilizing 2nd gear and reverse gear.
* The TCM forces TCC OFF.
* The TCM freezes transmission adaptive functions.
* The TCM commands maximum line pressure.
* The TCM enables Torque management.
* The TCM inhibits TAP Up/Down function.
* The TCM inhibits manual shifting of forward gears.
Wednesday, December 2, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2518
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2518
Typical Scan Tool Data
Circuit/System Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating
elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The control module supplies the HO2S with a
reference, or bias, voltage of about 450 mV. When the engine is first started, the control module operates in Open Loop, ignoring the HO2S voltage
signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV
that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust
stream.
Conditions for Running the DTC
* Before the ECM can report DTC P2271, or P2273 failed, DTCs P013A, P013C, P013E, P014A, P2270, and P2272 must run and pass.
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine speed is between 500-5,000 RPM.
* The mass air flow (MAF) is between 3-50 g/s.
* The vehicle speed is between 24-132 km/h (15-82 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The engine run time is equal to or more than 5 minutes.
* The accelerator pedal position (APP) is steady.
* The torque converter clutch is TCC is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off, when the above conditions are met.
Conditions for Setting the DTC
P2271
The ECM does not detect an HO2S voltage less than 150 mV before accumulated mass air flow exceeds 550 grams.
P2273
The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds 76 grams.
Action Taken When the DTC Sets
DTCs P2271 or P2273 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2271 or P2273 are Type B DTCs.
Typical Scan Tool Data
Circuit/System Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating
elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The control module supplies the HO2S with a
reference, or bias, voltage of about 450 mV. When the engine is first started, the control module operates in Open Loop, ignoring the HO2S voltage
signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV
that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust
stream.
Conditions for Running the DTC
* Before the ECM can report DTC P2271, or P2273 failed, DTCs P013A, P013C, P013E, P014A, P2270, and P2272 must run and pass.
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine speed is between 500-5,000 RPM.
* The mass air flow (MAF) is between 3-50 g/s.
* The vehicle speed is between 24-132 km/h (15-82 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The engine run time is equal to or more than 5 minutes.
* The accelerator pedal position (APP) is steady.
* The torque converter clutch is TCC is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off, when the above conditions are met.
Conditions for Setting the DTC
P2271
The ECM does not detect an HO2S voltage less than 150 mV before accumulated mass air flow exceeds 550 grams.
P2273
The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds 76 grams.
Action Taken When the DTC Sets
DTCs P2271 or P2273 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2271 or P2273 are Type B DTCs.
Tuesday, December 1, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2515
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2515
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine run time is greater than 5 minutes.
* The engine speed is between 1,100-2,500 RPM.
* The mass air flow (MAF) is between 3-20 g/s.
* The vehicle speed is between 50-120 km/h (31-75 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The catalytic converter temperature is between 550-900掳C (1,022-1,652掳F).
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P2270
The ECM does not detect a HO2S voltage greater than 805 mV before accumulated mass air flow exceeds 550 grams.
P2272
The ECM does not detect a HO2S voltage greater than 775 mV before the accumulated mass air flow exceeds 82 grams.
Action Taken When the DTC Sets
DTCs P2270 and P2272 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2270 and P2272 are Type B DTCs.
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine run time is greater than 5 minutes.
* The engine speed is between 1,100-2,500 RPM.
* The mass air flow (MAF) is between 3-20 g/s.
* The vehicle speed is between 50-120 km/h (31-75 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The catalytic converter temperature is between 550-900掳C (1,022-1,652掳F).
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P2270
The ECM does not detect a HO2S voltage greater than 805 mV before accumulated mass air flow exceeds 550 grams.
P2272
The ECM does not detect a HO2S voltage greater than 775 mV before the accumulated mass air flow exceeds 82 grams.
Action Taken When the DTC Sets
DTCs P2270 and P2272 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2270 and P2272 are Type B DTCs.
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2512
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2512
Typical Scan Tool Data
Circuit/System Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating
elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The control module supplies the HO2S with a
reference, or bias, voltage of about 450 mV. When the engine is first started, the control module operates in Open Loop, ignoring the HO2S voltage
signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV
that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust
stream.
Conditions for Running the DTC
* Before the ECM can report DTC P2271, or P2273 failed, DTCs P013A, P013C, P013E, P014A, P2270, and P2272 must run and pass.
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine speed is between 500-5,000 RPM.
* The mass air flow (MAF) is between 3-50 g/s.
* The vehicle speed is between 24-132 km/h (15-82 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The engine run time is equal to or more than 5 minutes.
* The accelerator pedal position (APP) is steady.
* The torque converter clutch is TCC is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off, when the above conditions are met.
Conditions for Setting the DTC
P2271
The ECM does not detect an HO2S voltage less than 150 mV before accumulated mass air flow exceeds 550 grams.
P2273
The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds 76 grams.
Action Taken When the DTC Sets
DTCs P2271 or P2273 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2271 or P2273 are Type B DTCs.
Typical Scan Tool Data
Circuit/System Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding
air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating
elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The control module supplies the HO2S with a
reference, or bias, voltage of about 450 mV. When the engine is first started, the control module operates in Open Loop, ignoring the HO2S voltage
signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV
that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust
stream.
Conditions for Running the DTC
* Before the ECM can report DTC P2271, or P2273 failed, DTCs P013A, P013C, P013E, P014A, P2270, and P2272 must run and pass.
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine speed is between 500-5,000 RPM.
* The mass air flow (MAF) is between 3-50 g/s.
* The vehicle speed is between 24-132 km/h (15-82 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The engine run time is equal to or more than 5 minutes.
* The accelerator pedal position (APP) is steady.
* The torque converter clutch is TCC is applied.
* The DTCs run once per ignition cycle, during decel fuel cut-off, when the above conditions are met.
Conditions for Setting the DTC
P2271
The ECM does not detect an HO2S voltage less than 150 mV before accumulated mass air flow exceeds 550 grams.
P2273
The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds 76 grams.
Action Taken When the DTC Sets
DTCs P2271 or P2273 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2271 or P2273 are Type B DTCs.
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2509
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2509
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine run time is greater than 5 minutes.
* The engine speed is between 1,100-2,500 RPM.
* The mass air flow (MAF) is between 3-20 g/s.
* The vehicle speed is between 50-120 km/h (31-75 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The catalytic converter temperature is between 550-900掳C (1,022-1,652掳F).
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P2270
The ECM does not detect a HO2S voltage greater than 805 mV before accumulated mass air flow exceeds 550 grams.
P2272
The ECM does not detect a HO2S voltage greater than 775 mV before the accumulated mass air flow exceeds 82 grams.
Action Taken When the DTC Sets
DTCs P2270 and P2272 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2270 and P2272 are Type B DTCs.
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
* DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The engine run time is greater than 5 minutes.
* The engine speed is between 1,100-2,500 RPM.
* The mass air flow (MAF) is between 3-20 g/s.
* The vehicle speed is between 50-120 km/h (31-75 mph).
* The fuel level is greater than 10 percent.
* The fuel system is in Closed Loop.
* The catalytic converter temperature is between 550-900掳C (1,022-1,652掳F).
* The DTCs run once per ignition cycle when the above conditions are met.
Conditions for Setting the DTC
P2270
The ECM does not detect a HO2S voltage greater than 805 mV before accumulated mass air flow exceeds 550 grams.
P2272
The ECM does not detect a HO2S voltage greater than 775 mV before the accumulated mass air flow exceeds 82 grams.
Action Taken When the DTC Sets
DTCs P2270 and P2272 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P2270 and P2272 are Type B DTCs.
Sunday, November 29, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2452
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2452
Typical Scan Tool Data
Transmission Internal Mode Switch Logic
Circuit/System Description
The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch (IMS) assembly, is a dual sliding
contact switch attached to the control valve body within the transmission. The 9 outputs from the switch indicate which position is selected by the
transmission manual shaft. Four outputs (A, B, C, P) are range selection inputs to the transmission control module (TCM). Five outputs (R1, R2,
D1, D2, S) are direction selection inputs to the hybrid powertrain control module (HPCM). The input voltage at the modules is high when the
switch is open and low when the switch is closed to ground. The state of each input is displayed on the scan tool as IMS Range and IMS Direction.
The IMS Range input parameters represented are transmission range signal A, signal B, signal C, and signal P. The IMS Direction input parameters
represented are transmission direction signal R1, signal R2, signal D1, signal D2, and signal Start.
Conditions for Running the DTC
* No OSS DTCs P0722 or P077B.
* The system voltage is 11-18 volts.
P182E
* The engine run time is greater than 5 seconds.
* The system voltage is 11-18 volts.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
Conditions for Setting the DTC
Any one or more of the following conditions:
* The IMS signal circuit A, B, or P are Low in Park for greater than 8 seconds.
* The IMS signal circuit A is Low in D for 8 seconds.
* The IMS signal circuit C is High in D for 8 seconds.
* The TCM detects an invalid range from the IMS for 3.25 seconds.
* The IMS signal circuit C is high in D for greater than 8 seconds.
* Park/Neutral Switch equals P/N and the IMS state is not Park or Neutral, or the Park/Neutral switch is not Park or Neutral and the IMS state
equals Park or Neutral for 4 seconds.
* Or the automatic transmission manual shift shaft position switch assembly indicates a transitional state for 8 seconds.
Action Taken When the DTC Sets
Typical Scan Tool Data
Transmission Internal Mode Switch Logic
Circuit/System Description
The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch (IMS) assembly, is a dual sliding
contact switch attached to the control valve body within the transmission. The 9 outputs from the switch indicate which position is selected by the
transmission manual shaft. Four outputs (A, B, C, P) are range selection inputs to the transmission control module (TCM). Five outputs (R1, R2,
D1, D2, S) are direction selection inputs to the hybrid powertrain control module (HPCM). The input voltage at the modules is high when the
switch is open and low when the switch is closed to ground. The state of each input is displayed on the scan tool as IMS Range and IMS Direction.
The IMS Range input parameters represented are transmission range signal A, signal B, signal C, and signal P. The IMS Direction input parameters
represented are transmission direction signal R1, signal R2, signal D1, signal D2, and signal Start.
Conditions for Running the DTC
* No OSS DTCs P0722 or P077B.
* The system voltage is 11-18 volts.
P182E
* The engine run time is greater than 5 seconds.
* The system voltage is 11-18 volts.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
Conditions for Setting the DTC
Any one or more of the following conditions:
* The IMS signal circuit A, B, or P are Low in Park for greater than 8 seconds.
* The IMS signal circuit A is Low in D for 8 seconds.
* The IMS signal circuit C is High in D for 8 seconds.
* The TCM detects an invalid range from the IMS for 3.25 seconds.
* The IMS signal circuit C is high in D for greater than 8 seconds.
* Park/Neutral Switch equals P/N and the IMS state is not Park or Neutral, or the Park/Neutral switch is not Park or Neutral and the IMS state
equals Park or Neutral for 4 seconds.
* Or the automatic transmission manual shift shaft position switch assembly indicates a transitional state for 8 seconds.
Action Taken When the DTC Sets
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2413
Typical Scan Tool Data
Circuit Description
The intake flow rationality diagnostic provides the within-range rationality check for the mass air flow (MAF), manifold absolute pressure (MAP),
and the throttle position (TP) sensors. This is an explicit model-based diagnostic containing 4 separate models for the intake system.
* The throttle model describes the flow through the throttle body and is used to estimate the MAF through the throttle body as a function of
barometric pressure (BARO), TP, intake air temperature (IAT), and estimated MAP. The information from this model is displayed on the
scan tool as the MAF Performance Test parameter.
* The first intake manifold model describes the intake manifold and is used to estimate MAP as a function of the MAF into the manifold from
the throttle body and the MAF out of the manifold caused by engine pumping. The flow into the manifold from the throttle uses the MAF
estimate calculated from the above throttle model. The information from this model is displayed on the scan tool as the MAP Performance
Test 1 parameter.
* The second intake manifold model is identical to the first intake manifold model except that the MAF sensor measurement is used instead of
the throttle model estimate for the throttle air input. The information from this model is displayed on the scan tool as the MAP Performance
Test 2 parameter.
* The fourth model is created from the combination and additional calculations of the throttle model and the first intake manifold model. The
information from this model is displayed on the scan tool as the TP Performance Test parameter.
The estimates of MAF and MAP obtained from this system of models and calculations are then compared to the actual measured values from the
MAF, MAP, and the TP sensors and to each other to determine the appropriate DTC to fail. The following table illustrates the possible failure
combinations and the resulting DTC or DTCs.
Conditions for Running the DTCs
* DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0128, P0335, P0336 are not set.
* The engine speed is between 450-8,000 RPM.
* The IAT Sensor parameter is between -20 and +125掳C (-4 and +257掳F).
* The ECT Sensor parameter is between 70 and 125掳C (158 and 257掳F).
* This DTC runs continuously within the enabling conditions.
Conditions for Setting the DTC
The engine control module (ECM) detects that the actual measured airflow from the MAF, MAP, and TP sensors is not within range of the
Typical Scan Tool Data
Circuit Description
The intake flow rationality diagnostic provides the within-range rationality check for the mass air flow (MAF), manifold absolute pressure (MAP),
and the throttle position (TP) sensors. This is an explicit model-based diagnostic containing 4 separate models for the intake system.
* The throttle model describes the flow through the throttle body and is used to estimate the MAF through the throttle body as a function of
barometric pressure (BARO), TP, intake air temperature (IAT), and estimated MAP. The information from this model is displayed on the
scan tool as the MAF Performance Test parameter.
* The first intake manifold model describes the intake manifold and is used to estimate MAP as a function of the MAF into the manifold from
the throttle body and the MAF out of the manifold caused by engine pumping. The flow into the manifold from the throttle uses the MAF
estimate calculated from the above throttle model. The information from this model is displayed on the scan tool as the MAP Performance
Test 1 parameter.
* The second intake manifold model is identical to the first intake manifold model except that the MAF sensor measurement is used instead of
the throttle model estimate for the throttle air input. The information from this model is displayed on the scan tool as the MAP Performance
Test 2 parameter.
* The fourth model is created from the combination and additional calculations of the throttle model and the first intake manifold model. The
information from this model is displayed on the scan tool as the TP Performance Test parameter.
The estimates of MAF and MAP obtained from this system of models and calculations are then compared to the actual measured values from the
MAF, MAP, and the TP sensors and to each other to determine the appropriate DTC to fail. The following table illustrates the possible failure
combinations and the resulting DTC or DTCs.
Conditions for Running the DTCs
* DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0128, P0335, P0336 are not set.
* The engine speed is between 450-8,000 RPM.
* The IAT Sensor parameter is between -20 and +125掳C (-4 and +257掳F).
* The ECT Sensor parameter is between 70 and 125掳C (158 and 257掳F).
* This DTC runs continuously within the enabling conditions.
Conditions for Setting the DTC
The engine control module (ECM) detects that the actual measured airflow from the MAF, MAP, and TP sensors is not within range of the
Thursday, November 26, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2393
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2393
Typical Scan Tool Data
Circuit/System Description
The shift solenoid 1 is part of the control solenoid valve assembly and is not serviced separately. The control solenoid valve assembly supplies 12
volts to shift solenoid 1 on the high side driver 1 circuit. The control solenoid valve assembly controls the normally closed shift solenoid 1 on the
shift solenoid 1 control circuit. The shift solenoid 1 controls the transmission fluid to the hybrid low, 1-2 clutch boost valve assembly.
In the OFF position, shift solenoid 1 controls the transmission fluid to the following components:
* EVT 1 mode, oil is supplied to drive motors with generator 1 and 2 for cooling and the hybrid low, 1-2 clutch
* EVT 2 mode, oil is supplied to drive motors with generator 1 and 2 for cooling and the hybrid direct 2-3-4 clutch
In the ON position, shift solenoid 1 controls the transmission fluid to the following components:
* Gear 1, oil is supplied to the hybrid low, 1-2 clutch and the 1-3 clutch
* Gear 2, oil is supplied to the hybrid low, 1-2 clutch and the hybrid direct 2-3-4 clutch
* Gear 3, oil is supplied to the hybrid direct 2-3-4 clutch and the 1-3 clutch
* Gear 4, oil is supplied to the hybrid direct 2-3-4 clutch and the 4th clutch
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 V.
Conditions for Setting the DTC
P0973
The control solenoid valve assembly detects an internal low voltage electrical malfunction of the shift solenoid 1 control circuit when shift solenoid
1 is commanded OFF for 1 second.
P0974
The control solenoid valve assembly detects an internal high voltage electrical malfunction of the shift solenoid 1 control circuit when shift
solenoid 1 is commanded ON for 1 second.
Action Taken When the DTC Sets
* DTCs P0973 and P0974 are Type A DTCs.
* The transmission control module defaults the transmission to EVT 1 or EVT 2 depending on vehicle speed.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
DTCs P0973 and P0974 are Type A DTCs.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the control solenoid valve assembly is warmed up and the transmission is operated long
enough to ensure a 3掳C (5掳F) increase in TCM temperature parameter. This will place the transmission control module under the optimal conditions
to test solenoid electrical DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Typical Scan Tool Data
Circuit/System Description
The shift solenoid 1 is part of the control solenoid valve assembly and is not serviced separately. The control solenoid valve assembly supplies 12
volts to shift solenoid 1 on the high side driver 1 circuit. The control solenoid valve assembly controls the normally closed shift solenoid 1 on the
shift solenoid 1 control circuit. The shift solenoid 1 controls the transmission fluid to the hybrid low, 1-2 clutch boost valve assembly.
In the OFF position, shift solenoid 1 controls the transmission fluid to the following components:
* EVT 1 mode, oil is supplied to drive motors with generator 1 and 2 for cooling and the hybrid low, 1-2 clutch
* EVT 2 mode, oil is supplied to drive motors with generator 1 and 2 for cooling and the hybrid direct 2-3-4 clutch
In the ON position, shift solenoid 1 controls the transmission fluid to the following components:
* Gear 1, oil is supplied to the hybrid low, 1-2 clutch and the 1-3 clutch
* Gear 2, oil is supplied to the hybrid low, 1-2 clutch and the hybrid direct 2-3-4 clutch
* Gear 3, oil is supplied to the hybrid direct 2-3-4 clutch and the 1-3 clutch
* Gear 4, oil is supplied to the hybrid direct 2-3-4 clutch and the 4th clutch
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 V.
Conditions for Setting the DTC
P0973
The control solenoid valve assembly detects an internal low voltage electrical malfunction of the shift solenoid 1 control circuit when shift solenoid
1 is commanded OFF for 1 second.
P0974
The control solenoid valve assembly detects an internal high voltage electrical malfunction of the shift solenoid 1 control circuit when shift
solenoid 1 is commanded ON for 1 second.
Action Taken When the DTC Sets
* DTCs P0973 and P0974 are Type A DTCs.
* The transmission control module defaults the transmission to EVT 1 or EVT 2 depending on vehicle speed.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
DTCs P0973 and P0974 are Type A DTCs.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the control solenoid valve assembly is warmed up and the transmission is operated long
enough to ensure a 3掳C (5掳F) increase in TCM temperature parameter. This will place the transmission control module under the optimal conditions
to test solenoid electrical DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2355
Typical Scan Tool Data
Circuit/System Description
The line pressure control (PC) solenoid is part of the control solenoid valve assembly which has no serviceable parts. The normally high line PC
solenoid regulates and directs the PC solenoid oil pressure to the isolator/pressure regulator valve. Increasing PC solenoid line pressure increases
transmission line pressure. The TCM varies the current to the line PC solenoid through a low side driver. Decreasing the current to the line PC
solenoid increases line PC solenoid oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the line PC solenoid decreases
line PC oil pressure by opening the solenoid exhaust port. Line PC solenoid power is supplied by the TCM through a high side driver (HSD). The
HSD protects the circuit and components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault
is corrected the HSD will reset.
Conditions for Running the DTC
P0961, P0962, or P0963
* The engine speed is greater than 500 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* DTCs P0961, P0962 or P0963 are not set.
Conditions for Setting the DTC
P0961
The TCM detects an internal electrical malfunction of the line PC solenoid where the measured line PC solenoid current does not equal the
commanded line PC solenoid current for 5 seconds.
P0962
The TCM detects a short to ground or an open/high resistance on the line PC solenoid control circuit for 1 second.
P0963
The TCM detects a short to voltage on the line PC solenoid control circuit for 1 second.
Action Taken When the DTC Sets
P0961
* DTC P0961 is a Type A DTC.
* The TCM freezes transmission adaptive functions.
P0962
* DTC P0962 is a Type A DTC.
* The TCM turns the high side driver OFF.
* The TCM defaults the transmission to 3rd gear if the current gear is 1st, 2nd, or 3rd, or 5th gear if the current gear is 4th, 5th, or 6th gear.
* The TCM inhibits the torque converter clutch (TCC).
* The TCM commands maximum line pressure.
* The TCM freezes transmission adaptive functions.
P0963
* DTC P0963 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
Typical Scan Tool Data
Circuit/System Description
The line pressure control (PC) solenoid is part of the control solenoid valve assembly which has no serviceable parts. The normally high line PC
solenoid regulates and directs the PC solenoid oil pressure to the isolator/pressure regulator valve. Increasing PC solenoid line pressure increases
transmission line pressure. The TCM varies the current to the line PC solenoid through a low side driver. Decreasing the current to the line PC
solenoid increases line PC solenoid oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the line PC solenoid decreases
line PC oil pressure by opening the solenoid exhaust port. Line PC solenoid power is supplied by the TCM through a high side driver (HSD). The
HSD protects the circuit and components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault
is corrected the HSD will reset.
Conditions for Running the DTC
P0961, P0962, or P0963
* The engine speed is greater than 500 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* DTCs P0961, P0962 or P0963 are not set.
Conditions for Setting the DTC
P0961
The TCM detects an internal electrical malfunction of the line PC solenoid where the measured line PC solenoid current does not equal the
commanded line PC solenoid current for 5 seconds.
P0962
The TCM detects a short to ground or an open/high resistance on the line PC solenoid control circuit for 1 second.
P0963
The TCM detects a short to voltage on the line PC solenoid control circuit for 1 second.
Action Taken When the DTC Sets
P0961
* DTC P0961 is a Type A DTC.
* The TCM freezes transmission adaptive functions.
P0962
* DTC P0962 is a Type A DTC.
* The TCM turns the high side driver OFF.
* The TCM defaults the transmission to 3rd gear if the current gear is 1st, 2nd, or 3rd, or 5th gear if the current gear is 4th, 5th, or 6th gear.
* The TCM inhibits the torque converter clutch (TCC).
* The TCM commands maximum line pressure.
* The TCM freezes transmission adaptive functions.
P0963
* DTC P0963 is a Type C DTC.
* The TCM freezes transmission adaptive functions.
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2338
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2338
Typical Scan Tool Data
Circuit/System Description
The transmission fluid pressure (TFP) switch 3 is part of the control solenoid valve assembly which has no serviceable parts. The TCM supplies a
signal circuit to the TFP switch 3. The TFP switch 3 has an internal case ground. TFP switch 3 is normally closed or LOW. When oil pressure is
present at the TFP switch 3, the switch is open or HIGH. The normally low clutch pressure control (PC) solenoid 4 controls pressure to the 2-6
clutch regulator valve. The TCM monitors the TFP switch 3 to determine the position of the 2-6 clutch regulator valve. When the 2-6 clutch is
commanded OFF, pressure is present on the TFP switch 3. When the 2-6 clutch is commanded ON, the 2-6 clutch regulator valve moves and
pressure is exhausted through the 2-6 clutch regulator valve.
Conditions for Running the DTC
P0872 or P0873
* DTCs P0711, P0712, P0713, P0973, P0974, P0976, P0977, P1915, or P182E are not set.
* Ignition voltage is 8.6 volts or greater.
* The transmission fluid temperature (TFT) is 0-120掳C (32-248掳F).
* Engine speed is 500 RPM or greater for 5 seconds.
Conditions for Setting the DTC
P0872
The TCM detects that the TFP switch 3 signal voltage remains LOW after the 2-6 clutch transitions from a HIGH pressure state to a LOW pressure
state. The TCM counts each incident. The DTC sets when 20 counts are accumulated.
P0873
The TCM detects that the TFP switch 3 signal voltage remains HIGH after the 2-6 clutch transitions from a LOW pressure state to a HIGH pressure
state. The TCM counts each incident. The DTC sets when 18 counts are accumulated.
Action Taken When the DTC Sets
* DTCs P0872 and P0873 are Type C DTCs.
* The TCM freezes transmission adaptive functions.
Conditions for Clearing the DTC
DTCs P0872 and P0873 are Type C DTCs.
Diagnostic Aids
A TFP switch may malfunction due to normal debris in the transmission fluid causing a TFP Switch DTC to intermittently set. This type of
condition should not be immediately noticeable to a customer, as the switch outputs are used for shift adaptive pressure and do not cause
transmission symptoms unless the switch malfunctions continuously for an extended period of time.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
Typical Scan Tool Data
Circuit/System Description
The transmission fluid pressure (TFP) switch 3 is part of the control solenoid valve assembly which has no serviceable parts. The TCM supplies a
signal circuit to the TFP switch 3. The TFP switch 3 has an internal case ground. TFP switch 3 is normally closed or LOW. When oil pressure is
present at the TFP switch 3, the switch is open or HIGH. The normally low clutch pressure control (PC) solenoid 4 controls pressure to the 2-6
clutch regulator valve. The TCM monitors the TFP switch 3 to determine the position of the 2-6 clutch regulator valve. When the 2-6 clutch is
commanded OFF, pressure is present on the TFP switch 3. When the 2-6 clutch is commanded ON, the 2-6 clutch regulator valve moves and
pressure is exhausted through the 2-6 clutch regulator valve.
Conditions for Running the DTC
P0872 or P0873
* DTCs P0711, P0712, P0713, P0973, P0974, P0976, P0977, P1915, or P182E are not set.
* Ignition voltage is 8.6 volts or greater.
* The transmission fluid temperature (TFT) is 0-120掳C (32-248掳F).
* Engine speed is 500 RPM or greater for 5 seconds.
Conditions for Setting the DTC
P0872
The TCM detects that the TFP switch 3 signal voltage remains LOW after the 2-6 clutch transitions from a HIGH pressure state to a LOW pressure
state. The TCM counts each incident. The DTC sets when 20 counts are accumulated.
P0873
The TCM detects that the TFP switch 3 signal voltage remains HIGH after the 2-6 clutch transitions from a LOW pressure state to a HIGH pressure
state. The TCM counts each incident. The DTC sets when 18 counts are accumulated.
Action Taken When the DTC Sets
* DTCs P0872 and P0873 are Type C DTCs.
* The TCM freezes transmission adaptive functions.
Conditions for Clearing the DTC
DTCs P0872 and P0873 are Type C DTCs.
Diagnostic Aids
A TFP switch may malfunction due to normal debris in the transmission fluid causing a TFP Switch DTC to intermittently set. This type of
condition should not be immediately noticeable to a customer, as the switch outputs are used for shift adaptive pressure and do not cause
transmission symptoms unless the switch malfunctions continuously for an extended period of time.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Connector End View Reference
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2256
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2256
Typical Scan Tool Data
Circuit/System Description
The automatic transmission (AT) input and output speed sensor (ISS and OSS) assembly each are part of a single harness. The ISS is a hall-effect
type sensor. The ISS/OSS mounts to the control valve upper body assembly. The ISS sensor end faces the splines on the 1-2-3-4 and 3-5-R clutch
housing outside diameter surface. The sensor receives 8.3-9.3 volts on the ISS/OSS supply voltage circuit from the control solenoid valve
assembly. As the 1-2-3-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the splines on the clutch housing
outside diameter surface. This signal is transmitted through the ISS signal circuit to the control solenoid valve assembly. The control solenoid valve
assembly uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed and gear ratio.
Conditions for Running the DTC
P0716
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0723, P0752, P0973, or P0974 are not set.
* The engine speed is 500 RPM or greater for 5 seconds.
* Engine torque is between 0-1492 Nm (0-1100 lb ft).
* Ignition voltage is 8.6 volts or greater.
* The vehicle speed is greater than 0 km/h (0 mph).
* The throttle position must be greater than 0 percent.
P0717
* DTCs P0101, P0102, P0103, P0716, P0717, P0722, or P0723 are not set.
* The engine speed is 500 RPM or greater for 5 seconds.
* Ignition voltage is 8.6 volts or greater.
* The TCM must receive a valid torque signal from the ECM.
* The vehicle speed is greater than 16 km/h (10 mph).
* The engine torque is greater than 50 Nm (37 lb ft).
Conditions for Setting the DTC
P0716
The transmission input speed sensor RPM drop is greater than 882 RPM for 1 second.
P0717
Transmission input shaft speed is less than 35 RPM for 4 seconds.
Action Taken When the DTC Sets
P0716
* DTC P0716 is a Type A DTC.
* The TCM freezes transmission adaptive functions.
* The TCM turns OFF all solenoids.
* The TCM inhibits Tap Up/Down functions.
* The transmission defaults to second gear.
* The TCM enables torque management.
* The TCM inhibits manual shifting of forward gears.
Typical Scan Tool Data
Circuit/System Description
The automatic transmission (AT) input and output speed sensor (ISS and OSS) assembly each are part of a single harness. The ISS is a hall-effect
type sensor. The ISS/OSS mounts to the control valve upper body assembly. The ISS sensor end faces the splines on the 1-2-3-4 and 3-5-R clutch
housing outside diameter surface. The sensor receives 8.3-9.3 volts on the ISS/OSS supply voltage circuit from the control solenoid valve
assembly. As the 1-2-3-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the splines on the clutch housing
outside diameter surface. This signal is transmitted through the ISS signal circuit to the control solenoid valve assembly. The control solenoid valve
assembly uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed and gear ratio.
Conditions for Running the DTC
P0716
* DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0723, P0752, P0973, or P0974 are not set.
* The engine speed is 500 RPM or greater for 5 seconds.
* Engine torque is between 0-1492 Nm (0-1100 lb ft).
* Ignition voltage is 8.6 volts or greater.
* The vehicle speed is greater than 0 km/h (0 mph).
* The throttle position must be greater than 0 percent.
P0717
* DTCs P0101, P0102, P0103, P0716, P0717, P0722, or P0723 are not set.
* The engine speed is 500 RPM or greater for 5 seconds.
* Ignition voltage is 8.6 volts or greater.
* The TCM must receive a valid torque signal from the ECM.
* The vehicle speed is greater than 16 km/h (10 mph).
* The engine torque is greater than 50 Nm (37 lb ft).
Conditions for Setting the DTC
P0716
The transmission input speed sensor RPM drop is greater than 882 RPM for 1 second.
P0717
Transmission input shaft speed is less than 35 RPM for 4 seconds.
Action Taken When the DTC Sets
P0716
* DTC P0716 is a Type A DTC.
* The TCM freezes transmission adaptive functions.
* The TCM turns OFF all solenoids.
* The TCM inhibits Tap Up/Down functions.
* The transmission defaults to second gear.
* The TCM enables torque management.
* The TCM inhibits manual shifting of forward gears.
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2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2240
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2240
Typical Scan Tool Data
Circuit/System Description
The powertrain relay is a normally open relay. The relay armature is held in the open position by spring tension. Battery positive voltage is supplied
directly to the relay coil and the armature contact at all times. The engine control module (ECM) supplies the ground path to the relay coil control
circuit via an internal integrated circuit called an output driver module (ODM). The ODM output control is configured to operate as a low side
driver for the powertrain relay. The ODM for the powertrain relay also incorporates a fault detection circuit, which is continuously monitored by
the ECM. When the ECM commands the powertrain relay ON, ignition 1 voltage is supplied to the ECM, and to several additional circuits.
Conditions for Running the DTC
P0685
* The ignition is ON.
* The battery voltage is between 9-16 V.
P0689
* The ignition is ON.
* The powertrain relay is commanded ON.
* DTC P0685 is not set.
P0690
* This DTC will run with the ignition ON or OFF.
* This DTC will run when the powertrain relay is commanded ON or OFF.
* DTC P0685 is not set.
Conditions for Setting the DTC
P0685
* The commanded state of the ODM and the actual state of the control circuit do not match.
* The condition is present for more than 5 s.
P0689
* The ECM detects less than 5 V on the ignition 1 voltage circuit to the ECM.
* The condition is present for more than 5 s.
P0690
* The ECM detects more than 16 V on the ignition 1 voltage circuit to the ECM when the relay is commanded ON.
* The ECM detects more than 2 V on the ignition 1 voltage circuit to the ECM when the relay is commanded OFF.
* The condition is present for more than 2 s.
Action Taken When the DTC Sets
DTCs P0685, P0689, and P0690 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0685, P0689, and P0690 are Type B DTCs.
Diagnostic Aids
This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test (See:
Starting and Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).
Typical Scan Tool Data
Circuit/System Description
The powertrain relay is a normally open relay. The relay armature is held in the open position by spring tension. Battery positive voltage is supplied
directly to the relay coil and the armature contact at all times. The engine control module (ECM) supplies the ground path to the relay coil control
circuit via an internal integrated circuit called an output driver module (ODM). The ODM output control is configured to operate as a low side
driver for the powertrain relay. The ODM for the powertrain relay also incorporates a fault detection circuit, which is continuously monitored by
the ECM. When the ECM commands the powertrain relay ON, ignition 1 voltage is supplied to the ECM, and to several additional circuits.
Conditions for Running the DTC
P0685
* The ignition is ON.
* The battery voltage is between 9-16 V.
P0689
* The ignition is ON.
* The powertrain relay is commanded ON.
* DTC P0685 is not set.
P0690
* This DTC will run with the ignition ON or OFF.
* This DTC will run when the powertrain relay is commanded ON or OFF.
* DTC P0685 is not set.
Conditions for Setting the DTC
P0685
* The commanded state of the ODM and the actual state of the control circuit do not match.
* The condition is present for more than 5 s.
P0689
* The ECM detects less than 5 V on the ignition 1 voltage circuit to the ECM.
* The condition is present for more than 5 s.
P0690
* The ECM detects more than 16 V on the ignition 1 voltage circuit to the ECM when the relay is commanded ON.
* The ECM detects more than 2 V on the ignition 1 voltage circuit to the ECM when the relay is commanded OFF.
* The condition is present for more than 2 s.
Action Taken When the DTC Sets
DTCs P0685, P0689, and P0690 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0685, P0689, and P0690 are Type B DTCs.
Diagnostic Aids
This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test (See:
Starting and Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).
Saturday, November 14, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2092
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2092
Typical Scan Tool Data
Circuit/System Description
The engine cooling fan system consists of 2 electric cooling fans and 3 fan relays. The cooling fan relays are arranged in a series/parallel (S/P)
configuration. This allows the engine control module (ECM) to operate both fans together at low or high speeds using 2 fan control circuits. The
cooling fans receive positive voltage from the cooling fan relays, which receive battery positive voltage from the underhood fuse block. The
cooling fans are supplied a ground at G100 and G101.
Conditions for Running the DTC
* The system voltage is between 9-18 volts.
* The engine speed is greater than 400 RPM.
* DTCs P0480 and P0481 run continuously when the conditions above are met.
Conditions for Setting the DTC
* The commanded state of the ECM driver and the actual state of the control circuit do not match.
* The condition exists for greater than 5 seconds.
Action Taken When the DTC Sets
DTCs P0480 and P0481 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0480 and P0481 are Type B DTCs.
Diagnostic Aids
* The ECM has the capability of providing command to the fan relays even when a scan tool output control is being used. Always refer to the
fan control command parameters on the scan tool to know which fans are being commanded ON by the ECM.
* The scan tool cooling fan output control operates as follows:
- Fan Relay 1 operates both fans at a low speed
- Fan Relay 2 and 3 operates one fan at high speed
Typical Scan Tool Data
Circuit/System Description
The engine cooling fan system consists of 2 electric cooling fans and 3 fan relays. The cooling fan relays are arranged in a series/parallel (S/P)
configuration. This allows the engine control module (ECM) to operate both fans together at low or high speeds using 2 fan control circuits. The
cooling fans receive positive voltage from the cooling fan relays, which receive battery positive voltage from the underhood fuse block. The
cooling fans are supplied a ground at G100 and G101.
Conditions for Running the DTC
* The system voltage is between 9-18 volts.
* The engine speed is greater than 400 RPM.
* DTCs P0480 and P0481 run continuously when the conditions above are met.
Conditions for Setting the DTC
* The commanded state of the ECM driver and the actual state of the control circuit do not match.
* The condition exists for greater than 5 seconds.
Action Taken When the DTC Sets
DTCs P0480 and P0481 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0480 and P0481 are Type B DTCs.
Diagnostic Aids
* The ECM has the capability of providing command to the fan relays even when a scan tool output control is being used. Always refer to the
fan control command parameters on the scan tool to know which fans are being commanded ON by the ECM.
* The scan tool cooling fan output control operates as follows:
- Fan Relay 1 operates both fans at a low speed
- Fan Relay 2 and 3 operates one fan at high speed
Sunday, November 8, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1954
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1954
Typical Scan Tool Data
Circuit/System Description
The throttle body assembly contains 2 throttle position (TP) sensors. The TP sensors are mounted to the throttle body assembly and are not
serviceable. The TP sensors provide a signal voltage that changes relative to throttle blade angle. The engine control module (ECM) supplies the TP
sensors with a common 5 V reference circuit, a common low reference circuit, and two independent signal circuits.
The TP sensors have opposite functionality. TP sensor 1 signal voltage decreases and TP sensor 2 signal voltage increases as the accelerator pedal
increases to wide open throttle (WOT).
Conditions for Running the DTC
* DTC P0641 or P0651 is not set.
* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.
* The ignition is ON or the engine is operating.
* DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135 run continuously when the above conditions are met.
Conditions for Setting the DTC
P0120
TP sensor 1 voltage is less than 0.325 V or greater than 4.75 V for greater than 1 s.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.325 V for greater than 1 s.
P0123
The ECM detects that the TP sensor 1 voltage is greater than 4.75 V for greater than 1 s.
P0220
The TP sensor 2 voltage is less than 0.25 V or greater than 4.59 V for greater than 1 s.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.25 V for greater than 1 s.
P0223
The ECM detects that the TP sensor 2 voltage is greater than 4.59 V for greater than 1 s.
Typical Scan Tool Data
Circuit/System Description
The throttle body assembly contains 2 throttle position (TP) sensors. The TP sensors are mounted to the throttle body assembly and are not
serviceable. The TP sensors provide a signal voltage that changes relative to throttle blade angle. The engine control module (ECM) supplies the TP
sensors with a common 5 V reference circuit, a common low reference circuit, and two independent signal circuits.
The TP sensors have opposite functionality. TP sensor 1 signal voltage decreases and TP sensor 2 signal voltage increases as the accelerator pedal
increases to wide open throttle (WOT).
Conditions for Running the DTC
* DTC P0641 or P0651 is not set.
* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.
* The ignition is ON or the engine is operating.
* DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135 run continuously when the above conditions are met.
Conditions for Setting the DTC
P0120
TP sensor 1 voltage is less than 0.325 V or greater than 4.75 V for greater than 1 s.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.325 V for greater than 1 s.
P0123
The ECM detects that the TP sensor 1 voltage is greater than 4.75 V for greater than 1 s.
P0220
The TP sensor 2 voltage is less than 0.25 V or greater than 4.59 V for greater than 1 s.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.25 V for greater than 1 s.
P0223
The ECM detects that the TP sensor 2 voltage is greater than 4.59 V for greater than 1 s.
Friday, November 6, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1895
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1895
Typical Scan Tool Data
Circuit/System Description
The internal mode switch (IMS) assembly is a sliding contact switch attached to the control valve body within the transmission. The nine outputs
from the switch indicate which position is selected by the transmission manual shaft. Four outputs (A, B, C, P), are range selection inputs to the
transmission control module (TCM). Five outputs (R1, R2, D1, D2, S) are direction selection inputs to the hybrid powertrain control module
(HPCM). The input voltage at the module is high when the switch is open and low when the switch is closed to ground.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 6.0 volts.
Conditions for Setting the DTC
The IMS Direction Signal state does not match for the selected gear for 3 seconds.
Action Taken When the DTC Sets
DTCs P181C, P181D, P181E, P181F, P183A, P183B, P183C, P183D, P183E, P184A and P184B are Type B DTCs.
Conditions for Clearing the DTC
DTCs P181C, P181D, P181E, P181F, P183A, P183B, P183C, P183D, P183E, P184A and P184B are Type B DTCs.
Diagnostic Aids
* The direction IMS assembly can be damaged by electric current exceeding 25 mA. Test the IMS assembly for an open condition whenever a
short to voltage condition is observed.
* The direction IMS is a non-serviceable part of the manual shift shaft position switch.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
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
Typical Scan Tool Data
Circuit/System Description
The internal mode switch (IMS) assembly is a sliding contact switch attached to the control valve body within the transmission. The nine outputs
from the switch indicate which position is selected by the transmission manual shaft. Four outputs (A, B, C, P), are range selection inputs to the
transmission control module (TCM). Five outputs (R1, R2, D1, D2, S) are direction selection inputs to the hybrid powertrain control module
(HPCM). The input voltage at the module is high when the switch is open and low when the switch is closed to ground.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 6.0 volts.
Conditions for Setting the DTC
The IMS Direction Signal state does not match for the selected gear for 3 seconds.
Action Taken When the DTC Sets
DTCs P181C, P181D, P181E, P181F, P183A, P183B, P183C, P183D, P183E, P184A and P184B are Type B DTCs.
Conditions for Clearing the DTC
DTCs P181C, P181D, P181E, P181F, P183A, P183B, P183C, P183D, P183E, P184A and P184B are Type B DTCs.
Diagnostic Aids
* The direction IMS assembly can be damaged by electric current exceeding 25 mA. Test the IMS assembly for an open condition whenever a
short to voltage condition is observed.
* The direction IMS is a non-serviceable part of the manual shift shaft position switch.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
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
Sunday, November 1, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1788
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1788
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0131, P0137, P0151, or P0157
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 3-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
P0132, P0138, P0152, or P0158
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 0-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
Conditions for Setting the DTC
P0131, P0137, P0151, or P0157
* The ECM detects that the HO2S voltage is less than 50 mV.
* The DTCs set within 100 s when the above condition is met.
P0132, P0138, P0152, or P0158
* The ECM detects that the HO2S voltage is greater than 1,050 mV.
* The DTCs set within 15 s when the above condition is met.
Action Taken When the DTC Sets
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0131, P0137, P0151, or P0157
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 3-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
P0132, P0138, P0152, or P0158
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 0-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
Conditions for Setting the DTC
P0131, P0137, P0151, or P0157
* The ECM detects that the HO2S voltage is less than 50 mV.
* The DTCs set within 100 s when the above condition is met.
P0132, P0138, P0152, or P0158
* The ECM detects that the HO2S voltage is greater than 1,050 mV.
* The DTCs set within 15 s when the above condition is met.
Action Taken When the DTC Sets
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1785
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1785
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0131, P0137, P0151, or P0157
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 3-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
P0132, P0138, P0152, or P0158
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 0-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
Conditions for Setting the DTC
P0131, P0137, P0151, or P0157
* The ECM detects that the HO2S voltage is less than 50 mV.
* The DTCs set within 100 s when the above condition is met.
P0132, P0138, P0152, or P0158
* The ECM detects that the HO2S voltage is greater than 1,050 mV.
* The DTCs set within 15 s when the above condition is met.
Action Taken When the DTC Sets
Typical Scan Tool Data
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
uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S
voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed
Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0131, P0137, P0151, or P0157
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 3-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
P0132, P0138, P0152, or P0158
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,
P2101, P2119, P2135, P2176 are not set.
* The engine is operating in Closed Loop.
* The Ignition 1 voltage is between 10-32 V.
* The fuel level is greater than 10 %.
* The throttle position (TP) is between 0-70 %.
* The DTCs run continuously when the above conditions are met for 2 s.
Conditions for Setting the DTC
P0131, P0137, P0151, or P0157
* The ECM detects that the HO2S voltage is less than 50 mV.
* The DTCs set within 100 s when the above condition is met.
P0132, P0138, P0152, or P0158
* The ECM detects that the HO2S voltage is greater than 1,050 mV.
* The DTCs set within 15 s when the above condition is met.
Action Taken When the DTC Sets
Saturday, October 31, 2020
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1747
2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1747
Typical Scan Tool Data
Circuit/System Description
The mass air flow (MAF) sensor is integrated with the intake air temperature (IAT) sensor. The MAF sensor is an air flow meter that measures the
amount of air entering the engine. The engine control module (ECM) uses the MAF sensor signal to provide the correct fuel delivery for all engine
speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of air entering the engine
indicates an acceleration or high load condition.
The ECM applies 5 V to the MAF sensor on the MAF sensor signal circuit. The sensor uses the voltage to produce a frequency based on the inlet
air flow through the sensor bore. The frequency varies within a range of near 2,000 Hertz at idle to near 9,700 Hertz at maximum engine load.
Conditions for Running the DTC
* The engine is running for more than 1 s.
* The engine speed is at least 300 RPM.
* The ignition signal is greater than 9 V.
* The above conditions are met for greater than 1 s.
* These DTCs run continuously when the above conditions are met.
Conditions for Setting the DTC
P0102
The ECM detects that the MAF Sensor parameter is less than 1,500 Hz or 1.2 g/s for greater than 5 s.
P0103
The ECM detects that the MAF Sensor parameter is more than 14,500 Hz or 332 g/s for greater than 5 s.
Action Taken When the DTC Sets
DTCs P0102 and P0103 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0102 and P0103 are Type B DTCs.
Diagnostic Aids
* Verify the integrity of the air induction system by inspecting for the following conditions:
- Any water intrusion in the induction system
- Any contamination or debris on the sensing elements of the MAF sensor
- Damaged components
* Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories (See:
Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Checking Aftermarket
Typical Scan Tool Data
Circuit/System Description
The mass air flow (MAF) sensor is integrated with the intake air temperature (IAT) sensor. The MAF sensor is an air flow meter that measures the
amount of air entering the engine. The engine control module (ECM) uses the MAF sensor signal to provide the correct fuel delivery for all engine
speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of air entering the engine
indicates an acceleration or high load condition.
The ECM applies 5 V to the MAF sensor on the MAF sensor signal circuit. The sensor uses the voltage to produce a frequency based on the inlet
air flow through the sensor bore. The frequency varies within a range of near 2,000 Hertz at idle to near 9,700 Hertz at maximum engine load.
Conditions for Running the DTC
* The engine is running for more than 1 s.
* The engine speed is at least 300 RPM.
* The ignition signal is greater than 9 V.
* The above conditions are met for greater than 1 s.
* These DTCs run continuously when the above conditions are met.
Conditions for Setting the DTC
P0102
The ECM detects that the MAF Sensor parameter is less than 1,500 Hz or 1.2 g/s for greater than 5 s.
P0103
The ECM detects that the MAF Sensor parameter is more than 14,500 Hz or 332 g/s for greater than 5 s.
Action Taken When the DTC Sets
DTCs P0102 and P0103 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0102 and P0103 are Type B DTCs.
Diagnostic Aids
* Verify the integrity of the air induction system by inspecting for the following conditions:
- Any water intrusion in the induction system
- Any contamination or debris on the sensing elements of the MAF sensor
- Damaged components
* Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories (See:
Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Checking Aftermarket
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