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2010 Cadillac Truck SRX AWD V6-3.0L Page 1778

2010 Cadillac Truck SRX AWD V6-3.0L Page 1778



* 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)



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-47825-20 Adapter Harness



Circuit/System Verification



1. If there are any other transmission DTCs set, diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See:



Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).



2. Perform the Range Selector Lever Cable Adjustment (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Shift



Linkage/Shift Cable/Adjustments) procedure to verify proper adjustment.



3. Ignition ON, observe the scan tool ECM PNP Switch parameter while moving the gear shift lever from Park and through all ranges. The



parameter should display Park/Neutral when in Park or Neutral and In-Gear when in Reverse or Drive.



4. Observe the scan tool TCM IMS A/B/C/P parameter while slowly moving the gear shift lever from Park through all ranges. The parameter



should match each gear range that is selected. Refer to Transmission Internal Mode Switch Logic (See: Specifications/Mechanical



Specifications/Automatic Transmission/Transaxle/System Specifications/6T70/6T75 - Automatic Transmission/Transmission Internal Mode



Switch Logic).



5. 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. Ignition OFF, disconnect the 20-way harness connector at the transmission.



2. Install the DT-47825-20 to the 20-way harness connector to the engine harness.



3. Test for less than 10 ohms between the ground circuit terminal 18 and ground.



瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.



4. Ignition ON, verify the scan tool ECM PNP Switch parameter displays In Gear.



瀚慖f not the specified value, test the P/N signal circuit for a short to ground. If the circuit tests normal, replace the engine control module.



5. Connect a 3-amp fused jumper wire between the TCM harness connector terminal 3 and terminal 18. Verify the PNP Switch parameter



changes to Park/Neutral.



瀚慖f not the specified value, test the P/N signal circuit for an open/high resistance. If the circuit tests normal, replace the engine control



module.



6. Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Replacement (See: Transmission and



Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair/6T70/6T75 - Automatic Transmission/Control Valve Body



Cover Replacement).



7. Connect the TCM harness connector.



8. Disconnect the IMS connector at the control solenoid valve assembly.



9. Ignition ON, verify the scan tool IMS A/B/C/P parameter displays HI for all four signal circuits.



瀚慖f not the specified value, replace the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control



Module Assembly Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission



and Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).



10. Verify the scan tool ECM PNP Switch parameter displays In Gear.



瀚慖f not the specified value, replace the control solenoid valve assembly.



11. Connect a 3-amp fused jumper wire between each transmission range signal circuit terminal listed below and the IMS ground circuit,



terminal A. Verify the corresponding scan tool IMS A/B/C/P parameter displays LOW when terminals E, D, C, and B are connected to the

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