2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2730

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2730

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 P0965

- Pressure Control (PC) Solenoid 2 System Performance

DTC P0966

- Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage

DTC P0967

- Pressure Control (PC) Solenoid 2 Control Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The clutch pressure control solenoid 2 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 2 on the high side driver 2 circuit. The transmission control module controls the

pressure control solenoid 2 through the clutch pressure control solenoid 2 control circuit. The normally high clutch pressure control solenoid 2

flows fluid to the hybrid direct, 2-3-4 clutch and drive motor 2 when commanded ON.

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

P0965

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

the actual hybrid direct, 2-3-4 clutch pressure does not equal the commanded hybrid direct, 2-3-4 clutch pressure for 5 seconds.

P0966

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

milliseconds.

P0967

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

500 milliseconds.

Action Taken When the DTC Sets

* DTC P0965 is a Type B DTC.

* DTCs P0966 and P0967 are Type A DTCs.

* The transmission control module defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the fault