Test F: The Door Locks Operate Only One Way

PINPOINT TEST F: THE DOOR LOCKS OPERATE ONLY ONE WAY

F1-F4:

F4-F6:

F7:

Normal Operation
The door lock control switches provide a ground, circuits GD133 (BK) or GD140 (BK/GN), for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator output circuits CPL11 (GY/BN), CPL52 (VT/GY) and CPL51 (BU/GN) are at ground on circuit GD133 (BK) through the SJB when the lock and unlock relays are not energized.

When the SJB receives a lock request through circuit CPL42 (GY/YE), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL52 (VT/GY) and CPL51 (BU/GN) are at ground on circuit GD133 (BK) through the SJB.

When the SJB receives an unlock request through circuit CPL43 (VT/GY), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL52 (VT/GY) and CPL51 (BU/GN) to unlock the doors. Circuit CPL11 (GY/BN) is at ground on circuit GD133 (BK) through the SJB.

DTC B2A25 Trim Panel Lock Switch Circuit Failure - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on the door lock switch circuit CPL42 (GY/YE) or door unlock switch circuit CPL43 (VT/GY). The DTC is also set if the door lock switch is actuated for longer than 2 minutes.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals and connectors
- Door lock control switches
- SJB