2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1939

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1939

4. If all circuits/connections test normal, replace the K20 ECM.

Component Testing

1. Ignition OFF, disconnect and remove the X50A UBEC.

2. Remove the KR75 powertrain relay.

3. Test for 170-210 ohm between the powertrain relay switched output circuit terminal 87 and the auxiliary coolant pump relay control circuit at

UBEC terminal X2-21.

瀚慖f not within the specified range, replace the X50A UBEC.

4. Test for greater than 2 ohm between UBEC B+ supply cable and the Afterboil PUMP Fuse 4.

瀚慖f less than the specified range, replace the X50A UBEC.

5. Connect a 10 A fused jumper wire from the positive terminal of the battery to the powertrain relay switched output circuit terminal 87.

Connect a jumper wire from the negative terminal of the battery to the auxiliary coolant pump relay control circuit at UBEC terminal X2-21.

Test for less than 2 ohm between UBEC B+ supply cable and the Afterboil PUMP Fuse 4.

瀚慖f greater than the specified range, replace the X50A UBEC.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Fuse Block Replacement (See: Maintenance/Fuses and Circuit Breakers/Fuse Block/Service and Repair/Removal and Replacement/Fuse

Block Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P2610

DTC P0602-P0606, P0610, P0614, P0630, P06D1, P160D, P160E, P161C, or P2610 (ECM, LAU/LBW)

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 P0602

- Control Module Not Programmed

DTC P0603

- Control Module Long Term Memory Reset

DTC P0604

- Control Module Random Access Memory Performance

DTC P0605

- Control Module Programming Read Only Memory Performance

DTC P0606

- Control Module Processor Performance

DTC P0610

- Control Module Vehicle Options Incorrect

DTC P0614

- Engine Control Module/Transmission Control Module Programming Not Plausible

DTC P0630

- VIN Not Programmed or Mismatched - Engine Control Module (ECM)