Pinpoint Test H: DTC B2A25, B2574, Or B2575: Fusion

The SJB sends voltage signals to both door lock control switches through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signalling the SJB to lock or unlock the doors. The door lock control switches have a dedicated ground circuit.

• DTC B2574 (Drivers Door LOCK Switch Short to Ground) - a continuous and on-demand DTC that sets when the DDM detects a short to ground on the lock input circuit. This code will also set if the driver door lock control switch is pressed for longer than 2 minutes.
• DTC B2575 (Drivers Door UNLOCK Switch Short to Ground) - a continuous and on-demand DTC that sets when the DDM detects a short to ground on the unlock circuit. This code will also set if the driver door lock control switch is pressed for longer than 2 minutes.
• DTC B2A25 (Trim Panel Lock Switch Circuit Failure) - an on-demand DTC that sets when the SJB detects a short to ground from the lock or unlock request input circuits. This DTC may also set if either of the door lock control switches are pressed for longer than 2 minutes.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Door lock control switch
• DDM
• SJB