POWER WINDOW MAIN SWITCH: Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK POWER WINDOW SWITCH INPUT SIGNAL 
   1. Turn ignition switch ON.
   2. Check signal between power window main switch harness connector and ground with oscilloscope.

      (+)		(-)	Signal (Reference value)
      Power window main switch
      Connector	Terminal
      D56	13	Ground

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 2.

2. CHECK POWER WINDOW SERIAL LINK SIGNAL 
   1. Turn ignition switch OFF.
   2. Disconnect power window main switch connector.
   3. Turn ignition switch ON.
   4. Check voltage between power window main switch harness connector and ground.

      (+)		(-)	Voltage (Approx.)
      Power window main switch
      Connector	Terminal
      D56	13	Ground	Battery voltage

      Is the inspection result normal? 

      YES: Replace power window main switch. Refer to "REMOVAL AND INSTALLATION ".

      NO: GO TO 3.

3. CHECK POWER WINDOW SERIAL LINK CIRCUIT 
   1. Disconnect BCM connector and power window main switch connector.
   2. Check continuity between BCM harness connector and power window main switch harness connector.

      BCM		Power window main switch		Continuity
      Connector	Terminal	Connector	Terminal
      M19	54	D56	13	Yes

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

4. CHECK INTERMITTENT INCIDENT 

   Refer to "INTERMITTENT INCIDENT ".

   : Inspection End.