Friday, August 6, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 705

2010 Cadillac Truck SRX FWD V6-3.0L Page 705



瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.



瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace



the K9 BCM.



7. If all the circuits test normal, replace the appropriate right marker lamp



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Tail Lamp Replacement (See: Lighting and Horns/Tail Lamp/Service and Repair)



* Headlamp Replacement (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup and programming



B3873



DTC B3873



Diagnostic Instructions



* 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 Descriptor



DTC B3873 02



- Front Washer Relay Circuit Short to Ground



Diagnostic Fault Information



Circuit/System Description



The body control module (BCM) controls the windshield washer fluid pump based on an input from the turn signal/multifunction switch. The BCM



monitors the washer switch through the windshield washer switch signal circuit. When the wash switch is closed, ground is supplied to the front



washer switch signal circuit. When this is the case, the BCM will command the windshield washer fluid pump and the low speed wipers on.



Conditions for Running the DTC



* Ignition ON.



* The system voltage is between 9-16 V.



Conditions for Setting the DTC



A short to ground is detected in the windshield washer relay control circuit.



Action Taken When the DTC Sets



Washer operation is suspended.



Conditions for Clearing the DTC



A current DTC clears when the diagnostic runs and passes.

No comments:

Post a Comment