2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1923

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1923

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Verify that DTC P0562 is not set.

瀚慖f DTC P0562 is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic

Trouble Code (DTC) List - Vehicle).

2. Ignition OFF, disconnect the harness connector of the K27 fuel pump control module.

3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 21 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.

4. If all circuits test normal, replace the K27 fuel pump 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 fuel pump control module 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