Sunday, December 22, 2019

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2509

select valve 3. Power to the SS 2 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

P0976 or P0977

* DTCs P0976 or P0977 have not set this ignition.

* The ignition voltage is 8.6 volts or greater

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

* The SS 2 is commanded ON or OFF.

Conditions for Setting the DTC

P0976

The TCM detects an internal low voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded OFF for 2 seconds.

P0977

The TCM detects an internal high voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded ON for 2 seconds.

Action Taken When the DTC Sets

P0976

* DTC P0976 is a Type A DTC.

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

* The TCM forces the torque converter clutch (TCC) OFF.

* The TCM commands maximum line pressure.

* The TCM freezes transmission adaptive functions.

* The TCM enables Torque Management.

* The TCM inhibits TAP Up/Down function.

* The TCM inhibits manual shifting of forward gears.

P0977

* DTC P0977 is a Type B DTC.

* The TCM inhibits 1st gear.

Conditions for Clearing the DIC/DTC

* DTC P0976 is a Type A DTC.

* DTC P0977 is a Type B 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/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission General Description)

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

Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission Component and System Description)

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

Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Electronic Component Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

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