2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1032
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Engine running for at least 1 minute.
2. Ignition OFF for 30 seconds.
3. Ignition ON, verify that DTC P0602 is not set.
瀚慖f the DTC is set, program the transmission control module (TCM). If the DTC resets, replace the control solenoid (w/body and TCM)
valve assembly.
4. Observe the DTC information with a scan tool. DTCs P0601, P0603, P0604, and P062F should not set.
瀚慖f a DTC sets, replace the control solenoid (w/body and TCM) valve assembly.
5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Repair Instructions
Important: Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) any time a transmission related component is serviced.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid (w/body and TCM) valve assembly
replacement, setup, and programming
P064A
DTC P1255 or P064A
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 P064A
- Fuel Pump Control Module Performance
DTC P1255
- Fuel Pump Control Module Driver Over-temperature
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from
the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,
the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The fuel pump control module detects an over-temperature fault.
Action Taken When the DTC Sets
DTCs P064A and P1255 are Type A DTCs.
