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. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D5 terminal 9 and ground.

   Terminals			Condition	Voltage (Approx.)
   (+)		(-)
   Connector	Terminal
   D5	9	Ground	Front power window LH is between fully-open and just before fully-closed position (ON)	0
   			Front power window LH is between just before fully-closed position and fully-closed position (OFF)	5

   Fig 1: Checking Limit Switch Operation

   Courtesy of NISSAN NORTH AMERICA, INC.

   OK or NG 

   OK: GO TO 3.

   NG: Check harness between main power window and door lock/unlock switch and front power window motor LH.

   • OK: Replace front power window motor LH.
   • NG: Replace or repair harness.

Measure voltage between main power window and door lock/unlock switch connector D5 terminal 13 and ground with oscilloscope when power window is in automatic closing operation.

Terminals			Condition	Voltage
(+)		(-)
D5	13	Ground	Front power window motor LH operation.

Fig 2: Checking Encoder

Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG 

OK: Replace main power window and door lock/unlock switch.

NG: Replace front power window motor LH.