2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2744

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2744

DTC P0969-P0971

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 Descriptor

DTC P0969

- Pressure Control (PC) Solenoid 3 System Performance

DTC P0970

- Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage

DTC P0971

- Pressure Control (PC) Solenoid 3 Control Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The clutch pressure control solenoid 3 is part of the control solenoid valve assembly and is not serviced separately. The transmission control

module supplies 12 volts to the clutch pressure control solenoid 3 on the high side driver 1 circuit. The transmission control module controls the

clutch pressure control solenoid 3 through the clutch pressure control solenoid 3 control circuit. The normally high clutch pressure control solenoid

3 controls fluid to the hybrid low, 1-2 and the 4th clutch assemblies when commanded ON and exhausts fluid when commanded OFF. The clutch

pressure control solenoid 3 regulates the transmission fluid pressure to the hybrid low, 1-2 and the 4th clutch assemblies.

Conditions for Running the DTC

* The engine run time is greater than 5 seconds.

* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.

* The system voltage is 11-18 V.

Conditions for Setting the DTC

P0969

The transmission control module detects an internal electrical performance malfunction of the clutch pressure control solenoid control circuit when

the actual hybrid low, 1-2 and the 4th clutch pressure does not equal the commanded hybrid low, 1-2 and 4th clutch pressure for 300 milliseconds.

P0970

The transmission control module detects an internal low voltage electrical malfunction of the clutch PC solenoid control circuit for 500

milliseconds.

P0971

The transmission control module detects an internal high voltage electrical malfunction of the clutch PC solenoid control circuit for 500

milliseconds.

Action Taken When the DTC Sets

* DTC P0969 is a Type B DTC.