2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1583
Diagnostic Aids
Damage or misalignment of the C2 drum machined teeth surface may cause a speed sensor malfunction.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
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)
Description and Operation
Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/AF40-6 - Automatic Transmission/Transmission Component and System Description)
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
Circuit/System Verification
1. Engine idling, observe the scan tool Transmission ISS parameter while varying the engine speed. The Transmission ISS parameter should
change with the engine speed and not drop out.
2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
Static Test
1. Ignition OFF, remove the K71 Transmission Control Module.
2. Test for more than 1 Mohm between the low reference circuit terminal 13 X2 and the voltage supply circuit terminal 12 X2.
瀚慖f less than the specified range, test the wiring harness for internal short. If the circuit tests normal, replace the automatic transmission.
3. Test for infinite resistance between each terminal and the low reference circuit terminal 13 X2 and also to the voltage supply circuit terminal
12 X2.
瀚慖f less than the specified range, replace the wiring harness.
4. If all circuits test normal, test or replace the K71 Transmission Control Module. Verify the DTC does not reset.
瀚慖f the DTC resets, replace the automatic transmission.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Automatic transmission replacement-Refer to Transmission Replacement ().
* Control valve body-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve
Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement) for replacement.
* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.
* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup and
