2010 Cadillac CTS Sedan AWD V6-3.0L Page 1698

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1698

line PC oil pressure by opening the solenoid exhaust port. Line PC solenoid 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

P0961, P0962, or P0963

* The engine speed is greater than 500 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTCs P0961, P0962 or P0963 are not set.

Conditions for Setting the DTC

P0961

The TCM detects an internal electrical malfunction of the line PC solenoid where the measured line PC solenoid current does not equal the

commanded line PC solenoid current for 5 seconds.

P0962

The TCM detects a short to ground or an open/high resistance on the line PC solenoid control circuit for 1 second.

P0963

The TCM detects a short to voltage on the line PC solenoid control circuit for 1 second.

Action Taken When the DTC Sets

P0961

* DTC P0961 is a Type A DTC.

* The TCM freezes transmission adaptive functions.

P0962

* DTC P0962 is a Type A DTC.

* The TCM turns the high side driver OFF.

* The TCM defaults the transmission to 3rd gear if the current gear is 1st, 2nd, or 3rd, or 5th gear if the current gear is 4th, 5th, or 6th gear.

* The TCM inhibits the torque converter clutch (TCC).

* The TCM commands maximum line pressure.

* The TCM freezes transmission adaptive functions.

P0963

* DTC P0963 is a Type C DTC.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

Conditions for Clearing the DIC/DTC

* DTCs P0961 and P0963 are Type C DTCs.

* DTC P0962 is a Type A DTC.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views)

* Inline Harness Connector End Views (See: Power and Ground Distribution/Multiple Junction Connector/Diagrams)

Description and Operation

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission General Description)

* Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission Component and System Description)

* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Electronic Component Description)

Electrical Information Reference