2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2569

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2569

For equivalent regional tools, refer to Special Tools (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Tools and

Equipment/6L45/6L50/6L80/6L90 - Automatic Transmission).

Circuit/System Verification

Note: If other DTCs are set, diagnose those DTCs first.

1. Engine idling in Park, with parking brake applied and drive wheels chocked.

2. Perform the Transmission Fluid Level and Condition Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing

and Inspection/Initial Inspection and Diagnostic Overview/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission Fluid Level and

Condition Check) to verify correct fluid level and condition.

3. Monitor the Transmission Fluid Pressure (TFP) switch 4 with a scan tool. Place the gear select lever in Park, Reverse, and Neutral range.

Verify the TFP switch 4 parameter states are correct for Park, Reverse, and Neutral. Refer to Transmission Fluid Pressure Switch Logic (

See: Specifications/Mechanical Specifications/Automatic Transmission/Transaxle/System Specifications/6L45/6L50/6L80/6L90 - Automatic

Transmission/Transmission Fluid Pressure Switch Logic).

4. Place the gear select lever in Drive range. Command the shift transmission with a scan tool through all forward ranges. Verify the TFP switch

4 parameter states are correct for all forward ranges. Refer to Transmission Fluid Pressure Switch Logic (See: Specifications/Mechanical

Specifications/Automatic Transmission/Transaxle/System Specifications/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission

Fluid Pressure Switch Logic).

5. Engine idling in Park, verify with a scan tool the Transmission ISS/OSS supply voltage test status parameter displays OK.

6. Engine idling in Park. Observe the Transmission ISS parameter on the scan tool, while varying the engine speed. The Transmission ISS

parameter should vary with engine speed and not drop out.

7. Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS parameter on the scan tool. The Transmission OSS

parameter should vary with the vehicle speed and not drop out.

Note: Perform a scan tool snapshot, during the road test.

8. Perform the Road Test (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Initial Inspection and

Diagnostic Overview/6L45/6L50/6L80/6L90 - Automatic Transmission/Road Test). Verify the transmission operation performs as indicated

in the road test instructions.

9. Review the scan tool snapshot data. Verify the following transmission data parameters display the correct values for each gear range:

* Transmission ISS

* Transmission OSS

* PC Solenoid 5

* TFP Switch 4

10. Operate the vehicle within the Condition for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic Transmission/Line Pressure Check). Verify the transmission line

pressures are within the specified ranges.

瀚慖f not within the specified ranges, refer to Fluid Pressure High or Low (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6L45/6L50/6L80/6L90 - Automatic

Transmission/Fluid Pressure High or Low).

2. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly

Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and

Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (See: Transmission and

Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 -

Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test). Test all solenoids

on the Q8 control solenoid valve assembly. A pressure change should occur for each solenoid valve.

瀚慖f the Q8 control solenoid valve assembly does not pass the performance test, replace the Q8 control solenoid valve assembly.

4. Listed in the chart below, are conditions for each component that could set DTC P2723 or P2724. Carefully inspect each component for that

condition. Repair or replace as necessary.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1172

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1172

For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0033, P0034, P0035, P0236, P0237, P0238, P0244, P0245, or

P0246 is not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.

2. Verify the exhaust system is not restricted. Refer to Restricted Exhaust (See: Engine, Cooling and Exhaust/Exhaust System/Testing and

Inspection/Restricted Exhaust).

3. If DTC P0299 is set, verify the proper operation of the turbocharger bypass solenoid valve. Refer to Turbocharger Cleaning and Inspection (

See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/102. Turbocharger Cleaning and Inspection).

4. Engine running, command the Turbocharger Bypass Solenoid Valve between Inactive and Active with a scan tool while observing the

following control circuit status parameters:

* Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status

* Turbocharger Bypass Solenoid Valve Control Circuit Open Test Status

* Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage Test Status

The parameters should alternate between OK and Not Run with each change in command.

5. Engine running, command the Turbocharger Wastegate Solenoid Valve to 20% with a scan tool while observing the following control circuit

status parameters:

* Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status

* Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status

* Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status

Each parameter should display OK.

6. Determine the current vehicle testing altitude. Observe the scan tool Boost Pressure Sensor, and BARO Sensor parameters. Compare the

parameters to each other and to the Altitude Versus Barometric Pressure (See: Powertrain Management/Computers and Control

Systems/Specifications/Altitude Versus Barometric Pressure) table. The parameters should be within the range specified in the table and

within 2 kPa of each other.

7. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Verify the integrity of the entire air induction system including all turbocharger components by inspecting for the following conditions:

* Any damaged components, including the turbocharger, the charge air cooler, and the turbo charger wastegate actuator solenoid valve

* Damage to the intake air pressure and temperature sensor

* Loose or improper installation

* An air flow restriction

* Any vacuum leaks

* Any pinholes or breaks in the vacuum hoses attached to the turbocharger wastegate solenoid valve

* Any restrictions in the vacuum hoses attached to the turbocharger wastegate solenoid valve

* Improper routing or connecting of the vacuum hoses on the turbocharger bypass solenoid valve , the bypass valve, and the turbocharger

wastegate actuator solenoid valve

* Any type of air leak between the turbocharger and the throttle body, including the charge air cooler.

* Exhaust leaks

瀚慖f a condition is found, repair as necessary.

2. Ignition OFF, remove B65 intake air pressure and temperature sensor but leave the electrical connector connected.

3. Connect the J 24460-01 - Cooling System Pressure Tester to the intake air pressure and temperature, boost pressure, sensor port with a

suitable adapter. Engine running, observe the scan tool Boost Pressure Sensor parameter. Apply 6 psi to the B65 intake air pressure and

temperature, boost pressure, sensor. Verify the scan tool Boost Pressure Sensor parameter responds to the applied pressure.

瀚慖f the scan tool Boost Pressure Sensor parameter does not increase with the applied pressure, replace the B65 intake air pressure and

temperature sensor.

4. Inspect the turbocharger oil supply lines for a restriction.

瀚慖f restricted, repair or replace as necessary.

5. If all other components test normal, test or replace the turbocharger.

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1501

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1501

For equivalent regional tools, refer to Special Tools ().

Circuit/System Verification

1. Clear the DTC information.

2. Turn the ignition OFF for 1 minute.

3. Turn the ignition ON.

4. Retest for DTC P0C2B.

Circuit/System Testing

1. Inspect for DTC B1433.

锟斤拷If DTC B1433 is set, diagnose and repair it prior to performing this diagnostic.

2. Ignition OFF, disconnect ATFP control module X1 connector.

3. Ignition ON, test for battery voltage on the ATFP battery circuit, from ATFP vehicle harness side X1 connector terminal 4 and chassis

ground.

锟斤拷If less than battery voltage, test the ATFP battery circuit for an open/high resistance. If the circuit tests normal, continue with diagnosis.

Note: If an open ground condition is observed, inspect the 3 phase motor shield circuit and terminal for damage.

4. Test for battery voltage on the ATFP battery circuit from ATFP vehicle harness side X1 connector terminal 4 and the ATFP control module

ground circuit connector X1 terminal 5.

锟斤拷If less than the specified range, test the ATFP ground circuit for an open/high resistance. If the circuit tests normal, continue with

diagnosis.

5. Test for battery voltage on the ATFP control module ignition circuit from ATFP vehicle harness side X1 connector terminal 2 and the ATFP

control module ground circuit connector X1 terminal 5.

锟斤拷If less than the specified range, test the ATFP vehicle harness side ignition circuit for an open/high resistance or a short to ground. If the

circuit tests normal, continue with diagnosis.

6. Test for 4.8-5.2 volts on the Trans. Aux. Oil Pump Diagnostic circuit, from the ATFP control module X1 connector terminal 1 and ground.

锟斤拷If less than the specified range, test the Trans. Aux. Oil Pump Diagnostic circuit for an open/high resistance or short to ground. If the

circuit tests normal, replace the PIM.

锟斤拷If more than the specified range, test the Trans. Aux. Oil Pump Diagnostic circuit for a short to voltage. If the circuit tests normal, replace

the PIM.

7. Connect the J 38522 - variable signal generator red terminal to the Trans. Aux. Oil Pump Diagnostic circuit, ATFP control module X1

connector terminal 1, vehicle harness side. Connect the J 38522 - variable signal generator black terminal to chassis ground.

8. Adjust the signal generator to 50 percent duty cycle @ 250 Hz and observe the Trans. Aux. Pump Actual speed parameter with the scan tool.

The scan tool should display 100 percent.

锟斤拷If less than 100 percent, test the Trans. Aux. Oil Pump Diagnostic circuit for a short to 5V. If the circuit tests normal, replace the PIM.

锟斤拷If 100 percent is displayed, replace the ATFP control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for PIM or ATFP control module replacement, setup, and

programming

P0C2F

DTC P0C2F

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.