Only Back Door Lock / Unlock Functions Do Not Operate

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Only Back Door LOCK / UNLOCK Functions do not Operate

Only Back Door LOCK / UNLOCK Functions do not Operate

DESCRIPTION

This circuit inspection is necessary for hatchback models.
The main body ECU receives lock/unlock switch signals and activates the door lock motor accordingly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT BACK DOOR LOCK ASSEMBLY




(a) Apply the battery voltage to the door lock motor and check the operation of the door lock motor.
OK:






NG -- REPLACE BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR LOCK ASSEMBLY)




(a) Disconnect the 4A main body ECU connector.
(b) Disconnect the N3 door lock connector.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the main body ECU connector.
(e) Reconnect the door lock connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU