Check Door Lock and Unlock Switch

POWER DOOR LOCK SYSTEM


Check Door Lock and Unlock Switch

1.CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
With CONSULT-III
Check ("CDL LOCK SW ", "CDL UNLOCK SW") in DATA MONITOR mode with CONSULT-III.





Without CONSULT-III
1. Remove key from ignition switch, and the door of driver side and passenger side is closed.
2. Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch
(driver side and passenger side) is turned "LOCK" or "UNLOCK".
3. Make sure signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (driver side and passenger side) is turned "LOCK" or "UNLOCK".










OK or NG
OK - Door lock and unlock switch is OK.
NG - GO TO 2.
2.CHECK POWER WINDOW SWITCH GROUND
1. Turn ignition switch OFF.
2. Disconnect power window main switch and front power window switch (passenger side) connector.
3. Check continuity between power window main switch connector and ground.










4. Check continuity between power window sub-switch (front passenger side) connector and ground.










OK or NG
OK - GO TO 3.
NG - Repair or replace harness.
3.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM connector and power window main switch connector.










3. Check continuity between BCM connector and power window sub-switch (front passenger side) connector.










OK or NG
OK - Replace power window main switch.
NG - Repair or replace harness.