Wednesday, April 14, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 269

2010 Cadillac Truck SRX FWD V6-3.0L Page 269



* 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 B251A 01



- All Door Unlatch Circuit Short to Battery



DTC B251A 02



- All Door Unlatch Circuit Short to Ground



DTC B251B 02



- Driver Door Unlatch High Control Circuit Short to Ground



DTC B251B 04



- Driver Door Unlatch High Control Circuit Open



DTC B251C 04



- Passenger Door Unlatch High Control Circuit Open



DTC B251D 04



- Left Rear Door Unlatch High Control Circuit Open



DTC B251E 04



- Right Rear Door Unlatch High Control Circuit Open



Diagnostic Fault Information



Circuit/System Description



The system is designed so that when the operator approaches a locked vehicle with the keyless entry transmitter, the keyless entry control module



will detect the keyless entry transmitter and when an exterior door handle is pulled the keyless entry control module will command all doors to



unlock and the door to unlatch allowing the door to be pulled open.



Conditions for Running the DTC



The system voltage is 9-16 V.



Conditions for Setting the DTC



B251A 01



The keyless entry control module detects a short to voltage on the passenger or left rear or right rear door latch motor unlatch low control circuit.



B251A 02



The keyless entry control module detects a short to ground on the passenger or left rear or right rear door latch motor unlatch low control circuit.

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