2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2737

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2737

Circuit/System Description

The clutch pressure (PC) solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. 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, P0966, or P0967

* DTCs P0965, P0966, or P0967 have not set this ignition.

* The ignition voltage is 8.6 volts or greater.

* The engine run time is greater than 5 seconds.

* The clutch PC solenoid 2 is commanded ON.

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.

P0966

The TCM detects a short to ground on the clutch PC solenoid 2 control circuit for 1 second.

P0967

The TCM detects an open or short to voltage on the clutch PC solenoid 2 control circuit, for 1 second.

Action Taken When the DTC Sets

P0965

* DTC P0965 is a Type C DTC.

* The TCM freezes transmission adaptive functions.

P0966

* DTC P0966 is a Type A DTC.

* The TCM forces HSD1 OFF.

* The TCM forces TCC OFF.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

* The TCM enables Torque management.

* The TCM inhibits TAP Up/Down function.

* The TCM defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse gear based on the fault detected.

* The TCM inhibits manual shifting of forward gears.

P0967

* DTC P0967 is a Type A DTC.

* The TCM defaults the transmission to 3rd gear or reverse gear.

* The TCM forces TCC OFF.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.