Monday, February 10, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 317

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 317



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the S3 shift lock actuator.



2. Ignition OFF, test for less than 1.0 Ohms between the ground circuit terminal 2 and ground.



瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.



3. Install a test lamp between the ground circuit terminal 2 and the control circuit terminal 5.



4. Ignition ON, command the scan tool Shift Lock Solenoid Actuator ON and OFF. The test lamp should turn ON and OFF when changing



between the commanded states.



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



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



K9 body control module.



5. If all circuits test normal, test or replace the S3 shift lock actuator.



Repair Instructions



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



* Transmission Control Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Shifter A/T/Service and



Repair/6T70/6T75 - Automatic Transmission/Transmission Control Replacement)



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



B0283



DTC B0283



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 Descriptors



DTC B0283 02



- Electric Rear Defrost Circuit Short To Ground



DTC B0283 05



- Electric Rear Defrost Circuit Short To Battery or Open



Diagnostic Fault Information



Circuit/System Description



When the HVAC control module receives a rear window defog request from the HVAC control faceplate, the HVAC control module will supply



voltage to the relay coil. Battery positive voltage is supplied at all times to the relay switched input and the relay coil is always grounded. This



allows battery positive voltage from the relay switched input to flow through the switch contacts and out the relay switched output to the rear



window defogger grid.



Conditions for Running the DTC



Battery voltage must be between 9-16 V.



Conditions for Setting the DTC

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