2010 Cadillac Truck SRX FWD V6-3.0L Page 316

2010 Cadillac Truck SRX FWD V6-3.0L Page 316

and current flow of the control circuit.

Conditions for Running the DTC

* The ignition switch is in the ON position.

* The brake pedal is pressed.

* The transmission is in the PARK position.

* The DTC runs continuously once the above conditions are met.

Conditions for Setting the DTC

B270A 01

The body control module detects a short to voltage in the automatic transmission park lock control solenoid control circuit for 1 second.

B270A 02

The body control module detects a short to ground in the automatic transmission park lock control solenoid control circuit for 1 second.

B270A 04

The body control module detects an open in the automatic transmission park lock control solenoid control circuit for 1 second.

Action Taken When the DTC Sets

The body control module will not attempt to enable the voltage supply circuit of the automatic transmission park lock control solenoid until the next

key cycle.

Conditions for Clearing the DTC

* A current DTC B270A will clear when the malfunction is no longer present and the ignition switch is cycled.

* A history DTC will clear after 100 ignition cycles with no current DTC active during the 100 ignition cycles.

Reference Information

Schematic Reference

Shift Lock Control Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Shift Interlock/Diagrams/Electrical

Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Automatic Transmission Shift Lock Control Description and Operation (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Shift Interlock/Description and Operation)

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)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the scan tool Brake Applied Output Signal parameter while pressing and releasing the brake pedal. The parameter

should change from ON to OFF when the brake pedal is depressed.

瀚慖f the parameter does not change, refer to Stop Lamps Malfunction (See: Lighting and Horns/Testing and Inspection/Symptom Related

Diagnostic Procedures/Stop Lamps Malfunction).

2. While pressing the brake pedal, the vehicle operator should be able to move the shifter lever out of the park position.