2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2336

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2336

5. Ignition ON, connect a 3A fused jumper wire between terminal 3 on the DT-47825-10 - jumper harness and ground at the transmission case.

Verify with a scan tool the Park/Neutral parameter displays Park/Neutral.

瀚慖f the Park/neutral parameter displays In Gear, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the

K20 ECM.

6. Ignition OFF, disconnect the DT-47825-10 - jumper harness from the X1 vehicle harness connector.

7. Connect the X1 vehicle harness connector to the Q8 control solenoid valve assembly.

8. Remove the transmission fluid pan. Refer to Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement ().

9. Disconnect the B15 automatic transmission internal mode switch electrical connector from the K71 TCM.

10. Ignition ON, test for 11-13 volts between terminal F on the K71 TCM and ground at the transmission case.

瀚慖f not within the specified range, replace the Q8 control solenoid valve assembly.

11. If all circuits test normal, replace the B15 automatic transmission internal mode switch.

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 control solenoid valve assembly or ECM

replacement, setup, and programming.

Note: If the IMS switch has been replaced, inspect the valve body detent spring to be sure it is centered over the detent lever. This prevents

the detent spring from hitting the IMS switch.

* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -

Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/6L45/6L50/6L80/6L90 - Automatic Transmission

)for IMS replacement.

P0856

DTC C0242 or P0856

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 C0242 00

- Engine Control Module (ECM) Indicated TCS Malfunction

DTC P0856

- Traction Control Torque Request Circuit

Circuit/System Description

The electronic brake control module (EBCM) and the engine control module (ECM) simultaneously control the traction control. The EBCM sends

a serial data message to the ECM requesting torque reduction. When certain ECM DTCs are set, the ECM will not be able to perform the torque

reduction for traction control. A serial data message is sent to the EBCM indicating that traction control is not allowed.

Conditions for Running the DTC

Engine running.

Conditions for Setting the DTC

The ECM detects a fault that prevents it from performing a traction control function and sends a serial data message to the EBCM indicating that

torque reduction is not allowed.

Action Taken When the DTC Sets

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2242

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2242

5. Ignition ON, observe the scan tool EC Ignition Relay Feedback Signal parameter. The ECM should communicate, and the parameter should

display 9-14 V.

瀚慖f not the specified range, or the ECM does not communicate, test the ignition voltage circuit between the powertrain relay and the ECM

for a short to ground or for an open/high resistance. If the circuit/connections test normal, replace the K20 ECM.

6. Ignition OFF, verify that a test lamp does not illuminate between the control circuit terminal 86 and B+.

瀚慖f the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 ECM.

7. Connect a DMM set to the diode setting between the control circuit terminal 86 and ground.

8. Ignition ON, verify the DMM does not display OL.

瀚慖f the DMM displays OL, test the control circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the

K20 ECM.

9. If all circuits test normal, replace the KR75 powertrain relay.

Component Testing

Note: Depending on the application, the relay coil resistance will be within one of the following ranges.

1. Test for one of the following resistance specifications between terminals 85 and 86 of the KR75 powertrain relay:

* 70-100 ohm

* 200-250 ohm

瀚慖f not within the specified range, replace the KR75 powertrain relay.

2. Test for the infinite resistance between the following terminals to the KR75 powertrain relay:

* 30 and 86

* 30 and 87

* 30 and 85

* 85 and 87

瀚慖f not the specified value, replace the KR75 powertrain relay.

3. Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for

less than 2 ohm between terminals 30 and 87.

瀚慖f greater than the specified range, replace the KR75 powertrain relay.

Repair Instructions

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

* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay

Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power

Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))

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

P0700

DTC P0700

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 of the diagnostic category.

DTC Descriptor

DTC P0700

- Transmission Control Module (TCM) Requested MIL Illumination

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1283

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1283

5. Ignition ON, test for greater than 4.8 V between the 5-volt reference circuit terminal 3 and the low reference circuit terminal 1.

瀚慖f less than the specified value, test for an open/high resistance in the 5-volt reference circuit. If the circuits/connections test normal,

replace the ECM.

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

瀚慖f the voltage is greater than specified range, test for a short to voltage in the signal circuit. If circuit/connections test normal, replace the

ECM.

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

circuit/connections test normal, replace the ECM.

7. If all circuits/connections test normal, test or replace the crankshaft position sensor.

Repair Instructions

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

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

Sensor/Service and Repair)

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

programming

P0341

DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or P0393 (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.

DTC Descriptors

DTC P0341

- Intake Camshaft Position Sensor Performance Bank 1

DTC P0342

- Intake Camshaft Position Sensor Circuit Low Voltage Bank 1

DTC P0343

- Intake Camshaft Position Sensor Circuit High Voltage Bank 1

DTC P0346

- Intake Camshaft Position Sensor Performance Bank 2

DTC P0347

- Intake Camshaft Position Sensor Circuit Low Voltage Bank 2

DTC P0348

- Intake Camshaft Position Sensor Circuit High Voltage Bank 2

DTC P0366

- Exhaust Camshaft Position Sensor Performance Bank 1

DTC P0367

- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 1

DTC P0368

- Exhaust Camshaft Position Sensor Circuit High Voltage Bank 1

DTC P0391

- Exhaust Camshaft Position Sensor Performance Bank 2

DTC P0392

- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 2

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 424

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 424

5. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminals and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

6. If all circuits test normal, replace the appropriate 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 the appropriate module replacement, setup, and

programming.

B1335

DTC B1335

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 B1335 00

- Device Power 3 Circuit

DTC B1335 0B

- Device Power 3 Circuit Current Above Threshold

DTC B1335 42

- Device Power 3 Circuit Calibration Data Set Not Programed

DTC B1335 4B

- Device Power 3 Circuit Calibration Not Learned

Diagnostic Fault Information