1.CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.
2. Disconnect power window sub-switch (door lock and unlock switch) connector.
3. Check signal between power window sub-switch (door lock and unlock switch) harness connector and ground using oscilloscope.

   (+) | (–) | Signal (Reference value)
   Power window sub-switch (door lock and unlock switch)
   Connector | Terminal
   D38 | 2 | Ground |
   9

Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
2.CHECK DOOR LOCK AND UNLOCK SWITCH CIRCUIT

1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and power window sub-switch (door lock and unlock switch) harness connector.

   BCM | Power window sub-switch (door lock and unlock switch) | Continuity
   Connector | Terminal | Connector | Terminal
   M123 | 128 | D38 | 2 | Existed
   131 | 9

3. Check continuity between BCM connector and ground.

   BCM | Ground | Continuity
   Connector | Terminal
   M123 | 128 | Not existed
   131

Is the inspection result normal?
YES>>Replace BCM. Refer to Exploded View.
NO>>Repair or replace harness.
3.CHECK DOOR LOCK AND UNLOCK SWITCH GROUND
Check continuity between power window sub-switch (door lock and unlock switch) harness connector and ground.

Power window sub-switch (door lock and unlock switch) | Ground | Continuity
Connector | Terminal
D38 | 8 | Existed

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace harness.
4.CHECK DOOR LOCK AND UNLOCK SWITCH
Refer to Component Inspection.
Is the inspection result normal?
YES>>GO TO 5.
NO>>Replace power window sub-switch (door lock and unlock switch). Refer to Removal and Installation.
5.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END