Encoder and Limit Switch Check

CHECK DOOR WINDOW SLIDE MECHANISM
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.

CHECK LIMIT SWITCH OPERATION

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

VOLTAGE SPECIFICATION

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
D5	9	Ground	Front power window LH is between just before fully-closed position and fully-closed position (OFF)	5

Fig 1: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D5 Terminal 9

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.

CHECK ENCODER

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.

VOLTAGE SPECIFICATION

Terminals			Condition	Voltage
(+)		(-)	Condition	Voltage
D5	13	Ground	Front power window motor LH operation.	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Measuring Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D5 Terminal 13 And Ground

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

OK or NG

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

NG: Replace front power window motor LH.