DTC B1339: Battery For Door Lock Circuit (Open): Description

WARNING: This page is about a different car, the 1999 Buick Regal and 1999 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

When either door lock switch is locked or unlocked, a ground signal is sent to Body Control Module (BCM). When BCM receives signal for doors to lock or unlock (except driver's door), voltage is supplied through circuit No. 1540 (Orange wire) to circuits No. 294 (Tan wire) or No. 295 (Gray wire).

DTC B1339 will set when BCM detects an open in circuit No. 1540 (Orange wire) for more than 0.3 second when BCM commands doors to lock or unlock. No driver warning message will be displayed.

If conditions for malfunction no longer exist, history DTC will clear after 100 consecutive ignition cycles. DTC B1339 will also clear when conditions no longer exist or scan tool is used to clear codes.

NOTE: If DTC B1339 is a history code, problem may be intermittent. Wiggle wires while performing the following test.

NOTE: When ignition switch is turned to RUN position with BCM disconnected, PCM-related DTC P1626 will be set. After BCM repair is completed, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.