2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1781

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1781

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0641 or P0651 are not set.

瀚慖f a DTC is set, refer to DTC P0641 or P0651 (ECM) (See: P Code Charts/P0641) for further diagnosis.

2. Observe the TP sensor 1 and 2 voltage parameters. Both parameters should be between 1.0-4.0 V and change with accelerator pedal input.

Note: If the Throttle Sweep Test is not available on the scan tool, use the accelerator to perform the test. Refer to Diagnostic Aids for further

details.

3. Perform the Throttle Sweep Test while observing the TP Sensor 1 and 2 Agree/Disagree parameter with a scan tool. The TP Sensor 1 and 2

Agree/Disagree parameter should display Agree.

4. Clear the DTCs with the scan tool. Operate the vehicle within the Conditions for Running the DTC or within the conditions that you observed

from the Freeze Frame/Failure Records.

5. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0120 or P0220 are not the only TP sensor DTCs set.

瀚慖f DTC P0120 or P0220 are the only DTCs set, replace the ECM.

6. 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. Ignition OFF, disconnect the harness connector at the throttle body assembly.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm

between the low reference circuit terminal C and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the ECM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.

4. Test for less than 1 V between the TP sensor 1 signal circuit terminal D and ground.

瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.

5. Install a 3 A fused jumper wire between TP sensor 1 signal circuit terminal D and the 5 V reference circuit terminal E. Verify the scan tool

TP sensor 1 voltage parameter is greater than 4.8 V.

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the ECM.

6. Test for 4.8-5.2 V between the TP sensor 2 signal circuit terminal F and ground.

瀚慖f less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the

ECM.

瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.

7. If all circuits test normal, test or replace the throttle body assembly.

Repair Instructions

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

* Throttle Body Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Engine Control Module replacement,

programming, and setup

P0128

DTC P0128 (Without L96)

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.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1552

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1552

1. Ignition ON, observe the DTC information with a scan tool. DTC P0641, P0642, P0643, P0651, P0652, P0653, P0697, P0698, or P0699

should not set.

2. Observe the appropriate scan tool 5 V Reference 1, 2, or 3 Circuit Status parameter. The parameter should display OK.

3. 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

Note: Additional DTCs will set when disconnecting the components.

1. Ignition OFF, disconnect the harness connector of all appropriate sensors for the applicable DTC. Refer to Diagnostic Aids.

2. Ignition ON, test for 4.8-5.2 V between one of the affected 5 V reference circuits and ground.

瀚慖f the voltage is less than the specified range, test for a short to ground on the 5 V reference circuit for each of the affected components. If

all circuits test normal, replace the K20 ECM.

瀚慖f the voltage is greater than the specified range, test for a short to voltage on the 5 V reference circuit for each of the affected

components. If all circuits test normal, replace the K20 ECM.

Note: A short to voltage on the signal circuit of certain components may cause this DTC to set.

3. Connect each component associated with the affected 5 V reference circuit one at a time while monitoring the appropriate scan tool 5 V

Reference Circuit Voltage parameter. Verify the voltage remains between 4.8-5.2 V.

瀚慖f not within the specified range when a component is connected, test the signal circuit of that component for a short to voltage. If the

circuit tests normal, replace the component.

Repair Instructions

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

* Accelerator Pedal with Position Sensor Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Accelerator

Pedal/Service and Repair/Accelerator Pedal with Position Sensor Assembly Replacement)

* Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement (LF1) (See: Heating and Air Conditioning/Refrigerant Pressure Sensor /

Switch/Service and Repair)Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement (LAU) (See: Heating and Air

Conditioning/Refrigerant Pressure Sensor / Switch/Service and Repair)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust)

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake)

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust)

* Crankshaft Position Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Crankshaft Position

Sensor/Service and Repair)

* Fuel Injector Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Service and Repair)

* Fuel Tank Pressure Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Fuel Tank Pressure Sensor/Service

and Repair)

* Secondary Injection Shutoff Valve Pressure Sensor Replacement (See: Powertrain Management/Emission Control Systems/Air Injection/Air

Injection Check Valve/Service and Repair)

* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

* Turbocharger Pressure Sensor Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Turbocharger/Service and

Repair/Turbocharger Pressure Sensor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0699

DTC P0641-P0643, P0651-P0653, or P0697-P0699 (ECM, LAU)

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.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1162

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1162

1. Ignition ON, verify that DTC P0697, P0698, or P0699 is not set.

瀚慖f a DTC is set, refer to DTC P0641-P0643, P0651-P0653, or P0697-P0699 (ECM, LAU) ( See: P Code Charts/P0641/ECM) for further

diagnosis.

2. Clear the DTC Info with a scan tool.

3. Start the engine, observe the scan tool Throttle Position Sensor 1 and 2 Voltage parameters. throttle position sensor 1 should be between

0.17-4.6 V, and throttle position sensor 2 should be between 0.15-4.8 V.

4. Observe the scan tool Throttle Position Sensor 1 and 2 parameters while performing the tests listed below. The parameter should display

Agree.

* Rapidly depress the accelerator pedal from the rest position to the WOT position and release pedal. Repeat the procedure several times.

* Slowly depress the accelerator pedal to WOT, then slowly return the pedal to closed throttle. Repeat the procedure several times.

5. Observe the DTC information with a scan tool. DTCs P0121, P0122, P0123, P0221, P0222, and P0223 should not set.

6. 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. Ignition OFF, disconnect the harness connector at Q38 throttle body.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm

between the low reference circuit terminal C and ground.

瀚慖f greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests

normal, replace the K20 engine control module.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.

瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20

engine control module.

瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the K20 engine control module.

4. Ignition ON, verify that the scan tool Throttle Position Sensor 1 Voltage parameter is less than 0.3 V.

瀚慖f greater than the specified value, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the K20

engine control module.

5. Connect a 3 A fused jumper wire between the 5 V reference circuit terminal E and the throttle position sensor 1 signal circuit terminal D.

Verify the scan tool Throttle Position Sensor 1 Voltage parameter is greater than 4.89 V.

瀚慖f less than the specified value, test the signal circuit for an open/high resistance or for a short to ground. If the circuit tests normal,

replace the K20 engine control module.

6. Verify the scan tool Throttle Position Sensor 2 Voltage parameter is greater than 4.97 V.

瀚慖f less than the specified value, test the signal circuit terminal F for a short to ground. If the circuit tests normal, replace the K20 engine

control module.

Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage.

7. Connect a 3 A fused jumper wire between the throttle position sensor 2 signal circuit terminal F and the low reference circuit terminal C.

Verify the scan tool Throttle Position Sensor 2 Voltage parameter is less than 0.10 V.

瀚慖f greater than the specified value, test the signal circuit for an open/high resistance or for a short to voltage. If the circuit tests normal,

replace the K20 engine control module.

8. If all circuits test normal, replace the Q38 throttle body assembly.

Repair Instructions

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

* Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement,

programming, and setup

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 876

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 876

1. Ignition ON, perform the ABS Motor test with a scan tool. You should hear or feel the ABS pump motor turn ON and OFF.

瀚慖f the pump motor does not turn ON and OFF, refer to Circuit/System Testing.

Note: To ensure the complete brake modulator and high pressure accumulator pressure relief procedure is allowed to occur, the brake

controller must see one brake pedal apply with the engine running followed by a proper shutdown without applying the brake pedal.

2. Transmission in PARK, engine running, apply and release the brake pedal.

Note: The ignition must transition to the OFF position without pausing at ACCESSORY and without applying the brake pedal. This ensures

that the brake modulator and high pressure accumulator relief occurs. This process will take approximately 1-2 minutes.

3. Ignition OFF, key removed from the ignition, wait 2 minutes.

4. Ignition ON, observe the scan tool EBCM, Accum. Pressure Sensor parameter. The Accum. Pressure Sensor parameter should be greater than

18,000 kPa (2,600 psi) in less than 30 seconds.

瀚慖f less than 18,000 kPa (2,600 psi) or it takes longer than 30 seconds to build pressure, refer to Brake Hydraulic and Assist System

Diagnosis (Two-mode Hybrid) (See: Brakes and Traction Control/Hydraulic System/Testing and Inspection/Component Tests and

General Diagnostics/Brake Hydraulic and Assist System Diagnosis (Two-mode Hybrid)).

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the K17 EBCM.

2. Test for less than 1 ohm between the ground circuits listed below and ground:

* Terminal 13

* Terminal 38

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground:

* Terminal 25

* Terminal 1

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the

B+ circuit fuse is open, replace the Q5 brake pressure modulator valve assembly.

4. If all circuits test normal, replace the Q5 brake pressure modulator valve assembly and verify DTC does not reset. If the DTC resets, replace

the K17 EBCM.

Repair Instructions

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

* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic

Control Assembly - Antilock Brakes/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming

C12E1

DTC C0899 or C12E1

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0899 00

- Device Voltage Low - EBCM 12V

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1882

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1882

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0641 or P0651 are not set.

锟斤拷If a DTC is set, refer to DTC P0641 or P0651 (ECM) (See: P Code Charts/P0641) for further diagnosis.

2. Observe the TP sensor 1 and 2 voltage parameters. Both parameters should be between 1.0-4.0 V and change with accelerator pedal input.

Note: If the Throttle Sweep Test is not available on the scan tool, use the accelerator to perform the test. Refer to Diagnostic Aids for further

details.

3. Perform the Throttle Sweep Test while observing the TP Sensor 1 and 2 Agree/Disagree parameter with a scan tool. The TP Sensor 1 and 2

Agree/Disagree parameter should display Agree.

4. Clear the DTCs with the scan tool. Operate the vehicle within the Conditions for Running the DTC or within the conditions that you observed

from the Freeze Frame/Failure Records.

5. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0120 or P0220 are not the only TP sensor DTCs set.

锟斤拷If DTC P0120 or P0220 are the only DTCs set, replace the ECM.

6. 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. Ignition OFF, disconnect the harness connector at the throttle body assembly.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm

between the low reference circuit terminal C and ground.

锟斤拷If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.

锟斤拷If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the ECM.

锟斤拷If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.

4. Test for less than 1 V between the TP sensor 1 signal circuit terminal D and ground.

锟斤拷If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.

5. Install a 3 A fused jumper wire between TP sensor 1 signal circuit terminal D and the 5 V reference circuit terminal E. Verify the scan tool

TP sensor 1 voltage parameter is greater than 4.8 V.

锟斤拷If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the ECM.

6. Test for 4.8-5.2 V between the TP sensor 2 signal circuit terminal F and ground.

锟斤拷If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the

ECM.

锟斤拷If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.

7. If all circuits test normal, test or replace the throttle body assembly.

Repair Instructions

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

* Throttle Body Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Engine Control Module replacement,

programming, and setup

P0128

DTC P0128 (Without L96)

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.