Diagnosis Procedure

DOOR LOCK AND UNLOCK SWITCH


DRIVER SIDE : Description

Transmits door lock/unlock operation to BCM.




DOOR LOCK AND UNLOCK SWITCH


DRIVER SIDE : Diagnosis Procedure

Regarding Wiring Diagram information, Power Door Lock System.
1.CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-III
Check main power window and door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA
MONITOR mode in CONSULT�III.
- When main power window and door lock/unlock switch is turned to LOCK:

CDL LOCK SW :ON

- When main power window and door lock/unlock switch is turned to UNLOCK:

CDL UNLOCK SW :ON

Without CONSULT-III
1. Remove key from ignition key cylinder.
2. Using an oscilloscope, check the signal between BCM connector M18 terminal 22 and ground when the main power window and door lock/unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figure below can be detected during 10 seconds just after the door lock/unlock switch is turned to LOCK or UNLOCK.










Is the inspection result normal?
YES - Door lock and unlock switch circuit is OK.
NO - GO TO 2
2.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Using the vehicle operational Intelligent Key, press and hold the UNLOCK button for more than 3 seconds.

The front windows should be lowered.

Is the inspection result normal?
YES - GO TO 3
NO - Replace BCM. Service and Repair.
3.CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Disconnect main power window and door lock/unlock switch.





2. Check continuity between main power window and door lock/unlock switch connector D8 terminal 17 and ground.

17 - Ground : Continuity should exist.

Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
4.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7 terminal 14.

22 - 14 : Continuity should exist.






3. Check continuity between BCM connector M18 terminal 22 and ground.

22 - Ground : Continuity should not exist.






Is the inspection result normal?
YES - Replace main power window and door lock/unlock switch.
NO - Repair or replace harness.