Test B: All Door Locks Are Inoperative

PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE

B1:

B1-B3:

B3-B5:

B6:

Normal Operation
The door lock control switches provide a ground, circuit 57 (BK) for the vehicle security module (VSM) lock and unlock signal circuits 119 (PK/YE) and 120 (PK/LG). The door lock actuator output circuits 117 (PK/BK), 118 (PK/OG) and 163 (RD/OG) are at ground on circuit 57 (BK) through the VSM when the lock and unlock relays are not energized.

When the VSM receives a lock request through circuit 119 (PK/YE), the VSM processes the lock request and energizes the all lock relay, supplying voltage to circuit 117 (PK/BK) to lock the doors. Circuits 118 (PK/OG) and 163 (RD/OG) are at ground on circuit 57 (BK) through the VSM.

When the VSM receives an unlock request through circuit 120 (PK/LG), the VSM processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits 118 (PK/OG) and 163 (RD/OG) to unlock the doors. Circuit 117 (PK/BK) is at ground on circuit 57 (BK) through the VSM.

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 117 (PK/BK) open or short to ground
- Circuit 118 (PK/OG) short to ground
- Circuit 163 (RD/OG) short to ground
- Circuit 517 (BK/WH) open
- VSM