Encoder And Limit Switch Check

Check the following.

Obstacles in window, glass molding, etc.

Worn or deformed glass molding

Door sash tilted too far inward or outward

Door window regulator

OK or NG 

OK: GO TO 2.

NG: Remove obstacles or repair door window slide mechanism.

1. Disconnect front power window regulator LH or RH harness connector.
2. Check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground.
   Fig 1: Checking Power Supply To Limit Switch

   

OK or NG 

OK: GO TO 3.

NG: Replace power window main switch or front power window switch RH.

1. Connect front power window regulator LH or RH.
2. Check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground during power window closing operation.
   Fig 2: Checking Limit Switch Operation

   

OK or NG 

OK: GO TO 5.

NG: GO TO 4.

Reset limit switch. Refer to "FRONT DOOR GLASS LIMIT SWITCH RESET ". Then check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground during power window closing operation at least ten times.

Fig 3: Reseting Limit Switch

OK or NG 

OK: GO TO 5.

NG: Replace power window regulator.

Measure voltage between front power window main switch terminal 14 or front power window switch RH terminal 19 and ground with oscilloscope when power window is in automatic closing operation.

Fig 4: Checking Encoder

OK or NG 

OK: Replace power window main switch or front power window switch RH.

NG: Replace power window regulator.