2010 Cadillac CTS Sedan AWD V6-3.6L Page 980
* 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)
Circuit/System Verification
1. Ignition ON, command the skip shift solenoid ON and OFF, with a scan tool, while observing the following skip shift circuit status
parameters.
* Skip shift solenoid control Ckt. Short Gnd Test Status
* Skip shift solenoid control Ckt. Open Test Status
* Skip shift solenoid control Ckt. Short Volts Test Status
瀚慐ach parameter should toggle between OK and Not Run or Not Run and OK.
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 that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Disconnect the skip shift solenoid harness connector.
2. Ignition ON, verify that a test lamp illuminates between the voltage circuit terminal B and ground.
瀚慖f the test lamp does not illuminate, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and
the circuit fuse is open, replace the skip shift solenoid.
3. Verify that a test lamp does not illuminate between the voltage circuit terminal B and the control circuit terminal A.
瀚慖f the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM.
4. Remove the test lamp.
5. Command the skip shift solenoid ON with a scan tool. Verify with a scan tool that the skip shift solenoid Ckt. Short Volts Test Status
parameter is OK.
瀚慖f not the specified value, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.
6. Install a 3A fused jumper wire between the skip shift control circuit terminal A and the voltage circuit terminal B. Command the skip shift
solenoid ON with a scan tool. Verify with a scan tool that the affected skip shift solenoid Ckt. Short Volts Test Status parameter is displaying
Fault.
瀚慖f not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
7. If all the circuits test normal, replace the skip shift assembly.
Repair Instructions
* Gear Select/Skip Shift Solenoid Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids -
Transmission and Drivetrain/Actuators and Solenoids - M/T/Shift Solenoid/Service and Repair/Gear Select/Skip Shift Solenoid Replacement
)
* Engine Control Module Programming and Setup (w/LF1) (See: Powertrain Management/Computers and Control Systems/Engine Control
Module/Testing and Inspection)Engine Control Module Programming and Setup (w/LLT) (See: Powertrain Management/Computers and
Control Systems/Engine Control Module/Testing and Inspection)Engine Control Module Programming and Setup (V8) (See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Testing and Inspection)
* Engine Control Module Replacement (See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
