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

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

Normal Operation
When the SJB receives a lock request from the door lock control switch, the SJB provides power to the door lock actuators through circuit CPL11 (GY/BN). Ground for the LH front door actuator is provided through circuit CPL51 (BU/GN) and ground for the remaining door lock actuators is provided through circuit CPL52 (VT/GY). When the SJB receives an unlock request, power and ground are reversed on the previously listed circuits.

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

B1-B3:

B4-B5: