Test A: A Single/More Than One Door Lock Is Inoperative

PINPOINT TEST A: A SINGLE/MORE THAN ONE DOOR LOCK IS INOPERATIVE

A1-A4:

A4-A6:

A7-A8:

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.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door lock actuators
- SJB