2010 Cadillac Truck SRX FWD V6-3.0L Page 1819

2010 Cadillac Truck SRX FWD V6-3.0L Page 1819

* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).

* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.

6T70/6T75 - Automatic Transmission

DTC P0965-P0967

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 P0965

- Clutch Pressure Control (PC) Solenoid 2 System Performance

DTC P0966

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

DTC P0967

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

Diagnostic Fault Information

Circuit/System Description

The clutch pressure (PC) solenoid 2 is part of the control solenoid valve assembly, which has no serviceable components. The normally high clutch

PC solenoid 2 regulates and directs the clutch PC solenoid 2 oil pressure to the 3-5 reverse clutch regulator valve and 3-5 reverse clutch boost

valve. Increasing clutch PC solenoid 2 pressure increases pressure to the 3-5 reverse clutch. The TCM varies the current to the PC solenoid 2

through a low side driver. Decreasing the current to the clutch PC solenoid 2 increases clutch PC solenoid 2 oil pressure by closing OFF the

solenoid exhaust port. Increasing the current to the clutch PC solenoid 2, decreases clutch PC solenoid 2 oil pressure by opening the solenoid

exhaust port. Clutch PC solenoid 2 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components

from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.

Conditions for Running the DTC

P0965

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0965 has not set this ignition cycle.

P0966

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0966 has not set this ignition cycle.

P0967

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0967 has not set this ignition cycle.

Conditions for Setting the DTC

P0965

The TCM detects an internal electrical performance malfunction of the clutch PC solenoid 2 control circuit where the measured clutch PC solenoid

2 current does not equal the commanded clutch PC solenoid 2 current for 5 seconds.