Friday, September 18, 2020

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1730

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1730



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/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



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



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



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



Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Special Tools



DT-47825-10 - Jumper Harness



Circuit/System Verification



1. Operate the vehicle in 3rd gear long enough to ensure at least a 3掳C (5掳F) rise in TCM temperature.



2. Place the gear selector in Reverse for 5 seconds and then idle the vehicle in Park for 5 seconds. Verify with a scan tool the following test



status parameters displays OK:

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