2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1418

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1418

ground circuit terminals listed below and ground.

* Terminal 73 X2 (LF1)

* Terminal 73 X3 (LF1)

* Terminal 1 X2 (LAU)

* Terminal 2 X2 (LAU)

* Terminal 4 X2 (LAU)

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

4. Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground.

* Terminal 52 X1 (LF1)

* Terminal 56 X2 (LAU)

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

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

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 ECM replacement, setup, and programming

6T70/6T75 - Automatic Transmission

DTC P0562, P0563, or P2534

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 P0562

- System Voltage Low

DTC P0563

- System Voltage High

DTC P2534

- Ignition 1 Switch Circuit Low Voltage

Diagnostic Fault Information

Circuit/System Description

The transmission control module (TCM) within the control solenoid valve assembly continuously monitors the system voltage on the ignition

voltage circuit. Lower than normal voltage may be inadequate to operate the transmission control solenoids properly. Improper solenoid operation

may cause erratic transmission operation, which may result in internal damage. These DTCs detect high or low TCM voltage for an extended

period.

Conditions for Running the DTC

P0562

* Ignition voltage was 6.0 volts or greater and has not dropped below 2.0 volts.

* Engine speed is 1,200 RPM or greater.