2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1423
4. If all circuits test normal, replace the K20 ECM.
Fuel Pump Control Module
1. Ignition OFF, disconnect the harness connectors at the K27 fuel pump control module.
2. 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 terminal 25 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the IGN/B+ circuit terminals listed below and ground:
* Terminal 1
* Terminal 21
瀚慖f the test lamp does not illuminate, test the IGN/B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the K27 fuel pump control module.
Transmission Control Module
1. Ignition OFF, disconnect the harness connectors at the T12 transmission.
2. 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 1 (MH2 or MH4)
* Terminal 18 (MH2 or MH4)
* Terminal 9 (MXE)
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the IGN/B+ circuit terminals listed below and ground:
* Terminal 10 (MH2 or MH4)
* Terminal 1 (MXE)
瀚慖f the test lamp does not illuminate , test the IGN/B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the K71 transmission 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 the appropriate 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
