Encoder and Limit Switch Check (Front LH)

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 D7 terminal 9 and ground.
   TERMINAL CONDITION CONTINUITY CHART
   
   

   Terminals			Condition	Voltage (Approx.)
   (+)		(-)
   Connector	Terminal
   D7	9 (G/W)	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 fullyclosed position and fullyclosed position (OFF)	5

   Fig 1: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 9 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

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 D7 terminal 16 (12) and ground with oscilloscope when power window is in automatic closing operation.

Terminals			Condition	Voltage
(+)		(-)
D7	16 (G/Y),(12) (G/Y)	Ground	Front power window motor LH operation.

Fig 2: Measuring Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 16 (12) And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

( ): with left and right front power window anti-pinch system 

OK or NG 

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

NG: Replace front power window motor LH.