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.
