2010 Cadillac Truck SRX FWD V6-3.0L Page 1911

2010 Cadillac Truck SRX FWD V6-3.0L Page 1911

Action Taken When the DTC Sets

* DTC P1876 is a Type C DTC.

* The TCM disables Tap shift functions.

Conditions for Clearing the DIC/DTC

DTC P1876 is a Type C 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/Connector End Views By Name)

Description and Operation

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/6T70/6T75 - Automatic Transmission/Transmission General Description)

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

Operation/6T70/6T75 - 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)

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. Verify there are no IMS DTCs set.

瀚慖f IMS DTCs are set, diagnose them first.

2. Ignition ON, transmission in Park, observe the scan tool Driver Shift Control parameter. The reading should display Inactive.

3. 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

1. Ignition OFF, disconnect the harness connector at the transmission shift lever.

2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.

瀚慖f the test lamp does not illuminate, test the IGN circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the BCM.

3. Verify the scan tool Driver Shift Request parameter indicates Invalid.

瀚慖f not the specified value, replace the BCM.

4. Ignition OFF, test for 300-600 ohms between the signal circuit terminal B and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the BCM.

瀚慖f greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.