Monday, November 2, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 712

2010 Cadillac Truck SRX AWD V6-3.0L Page 712



Conditions for Running the DTC



Brake pedal is applied.



Conditions for Setting the DTC



B3881 01



The BCM detects a short to voltage on the left rear brake lamp control circuit.



B3881 02



The BCM detects a short to ground on the left rear brake lamp control circuit.



B3882 01



The BCM detects a short to voltage on the right rear brake lamp control circuit.



B3882 02



The BCM detects a short to ground on the right rear brake lamp control circuit.



Action Taken When the DTC Sets



The appropriate brake lamp will be inoperative.



Conditions for Clearing the DTC



* The DTC will be current for as long as the fault is present.



* When the fault is no longer present, the DTC will be a history DTC.



* A history DTC will clear after 50 ignition cycles.



Reference Information



Schematic Reference



Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)



Connector End View Reference



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



Description and Operation



Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems)



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 function of the E5L stop lamp-left while commanding the Left Brake Lamp ON and OFF with a scan tool. The E5L



stop lamp-left should turn ON and OFF while changing between the commanded states



2. Observe the function of the E5R stop lamp-right while commanding the Right Brake Lamp ON and OFF with a scan tool. The E5R stop



lamp-right should turn ON and OFF while changing between the commanded states.



Circuit/System Testing



1. Ignition OFF, disconnect the X1 harness connector at the appropriate E5 tail lamp.



2. Test for less than 30 ohm between the ground circuit terminal C and ground.

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