2010 Cadillac Truck SRX FWD V6-3.0L Page 1097

2010 Cadillac Truck SRX FWD V6-3.0L Page 1097

If the electrical circuit tests are OK and the shift pattern is not occurring, there may be a mechanical/hydraulic condition that prevents operation.

Refer to Symptoms - Automatic Transmission (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Symptom Related Diagnostic Procedures/6T70/6T75 - Automatic Transmission/Symptoms - Automatic Transmission).

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)

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

Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Electronic Component 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

With a scan tool observe the Tow/Haul switch parameter in Body Controls data list. With the ignition On or engine running, operate the Tow/Haul

switch several times, and observe the parameter as you operate the switch. The parameter should toggle between Active and Inactive when the

switch is operated.

Circuit/System Testing

1. Ignition Off, transmission in Park, disconnect the Tow/Haul switch connector.

2. Test for less than 1 ohm of resistance between the Tow/Haul switch signal circuit terminal B and ground.

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

3. Ignition On, verify the scan tool Tow/Haul parameter displays Inactive.

瀚慖f not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the BCM.

4. Install a fused jumper between the signal circuit and ground. Verify the scan tool parameter displays Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

BCM.

5. If all circuits test normal, replace the Tow/Haul switch.

6. If the electrical circuit checks are OK and the tow/haul shift pattern is not occurring, there may be a mechanical/hydraulic condition that

prevents tow/haul operation. Refer to Symptoms - Automatic Transmission (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6T70/6T75 - Automatic Transmission/Symptoms -

Automatic Transmission).

Component Testing

Verify the Tow/Haul Mode parameter on the scan tool while cycling the tow/haul switch.

1. Ignition Off, transmission in Park, disconnect the transmission Tow/Haul switch assembly.

2. Test for infinite resistance between the Tow/Haul switch with the switch in the Open position.