Saturday, April 24, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 715

2010 Cadillac Truck SRX FWD V6-3.0L Page 715



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC B3884 02



- Center High Mounted Brake Lamp Circuit Short to Ground



DTC B3884 04



- Center High Mounted Brake Lamp Circuit Open



Diagnostic Fault Information



Circuit/System Description



The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an



analog voltage signal to the body control module (BCM). The BCM will apply battery voltage to the right, left and center stop lamp control circuits.



Conditions for Running the DTC



The brakes are applied.



Conditions for Setting the DTC



B3884 02



The BCM detects a short to ground on the center high mounted brake lamp control circuit



B3884 04



The BCM detects an open/high resistance on the center high mounted brake lamp control circuit



Action Taken When the DTC Sets



The center high mounted brake lamp will not illuminate.



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



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

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