Test B: A Single/More Than One Door Lock Is Inoperative - Without Memory

PINPOINT TEST B: A SINGLE/MORE THAN ONE DOOR LOCK IS INOPERATIVE - WITHOUT MEMORY

Normal Operation
The smart junction box (SJB) supplies voltage to the lock all relay, the unlock driver door relay or unlock all relay based upon input from the door lock control switches, the remote keyless entry (RKE) transmitter, or the keyless entry keypad. Upon a lock request, the SJB supplies voltage on circuit CPL11 (GY/BN) and ground on circuits CPL52 (VT/GY) and CPL51 (BU/GN). Upon an unlock request, the voltage 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 (part of the door latch)
- SJB

B1:

B1-B2:

B2-B4: