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2010 Cadillac Truck SRX AWD V6-3.0L Page 316

2010 Cadillac Truck SRX AWD 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.

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