Test F: The Door Locks Operate Only One Way

PINPOINT TEST F: THE DOOR LOCKS OPERATE ONLY ONE WAY

F1-F3:

F4-F6:

Normal Operation
The door lock control switches provide a ground, circuit GD133 (BK) or circuit GD151 (BK/GN) for the smart junction box (SJB) lock and unlock signal circuits CPL42 (GY/YE) and CPL43 (VT/GY). The door lock actuator circuits CPL11 (GY/BN), CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential in 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 CPL51 (BU/GN) and CPL52 (VT/GY) are at ground potential within 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 potential within the SJB.

DTC B2574 - is an on-demand DTC that sets if the SJB detects a short to ground on the driver door lock switch circuit CPL42 (GY/YE).

DTC B2575 - is an on-demand DTC that sets if the SJB detects a short to ground on the driver door unlock switch circuit CPL43 (VT/GY).

Possible Causes
- Circuit CPL42 (GY/YE) open or short to ground
- Circuit CPL43 (VT/GY) open or short to ground
- Door lock switch
- SJB