2010 Cadillac Truck SRX AWD V6-3.0L Page 1555

2010 Cadillac Truck SRX AWD V6-3.0L Page 1555

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. Engine running, accessories OFF, measure and record the battery voltage at the C1 battery terminals. The voltage should be between 12.6 and

15.0 V.

瀚慖f not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and Inspection/Component Tests

and General Diagnostics/Charging System Test).

2. S39 Ignition Switch OFF, disconnect the harness connectors at the K20 ECM.

3. S39 Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ohms between the

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