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2010 Cadillac Truck Escalade RWD V8-6.2L Page 2199

2010 Cadillac Truck Escalade RWD V8-6.2L Page 2199

2. Operate the vehicle to normal engine temperature is reached. Verify with a scan tool the engine coolant temperature (ECT) sensor parameter

is less than 125掳C (257掳F).

瀚慖f greater than the specified value, refer to Symptoms - Engine Cooling (See: Engine, Cooling and Exhaust/Cooling System/Testing and

Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Cooling).

3. Operate the vehicle till normal engine temperature is reached. Verify with a scan tool, the TCM temperature parameter is less than 142掳C

(287掳F).

瀚慖f greater than the specified value, inspect the transmission fluid lines for being misrouted, kinked, or damage.

4. If all items test normal, replace the Q8 control solenoid 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

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

* Control solenoid valve assembly replacement. Refer to Control Module References (See: Testing and Inspection/Programming and

Relearning) for replacement, setup, and programming.

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning) following all transmission related repairs.

Fuel Pump Flow Control Module (FPCM)

DTC P0641 or P06A6

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 P0641

- 5-Volt Reference Circuit

DTC P06A6

- 5-Volt Reference Performance

Diagnostic Fault Information

Circuit/System Description

The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump control

module monitors the voltage signal from the fuel pressure sensor.

Conditions for Running the DTC

The ignition is on.

Conditions for Setting the DTC

The fuel pump control module detects that the fuel pressure 5 V reference is above or below a predetermined voltage threshold.

Action Taken When the DTC Sets

DTCs P0641 and P06A6 are Type A DTCs.

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