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.