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Check Encoder Circuit (Driver Side)

CHECK FRONT POWER WINDOW MOTOR (DRIVER SIDE) CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between front power window motor (driver side) connector D7 terminal 4 and ground.
  4 (W) - Ground: Approx. 10V
  
  Fig 1: Checking Voltage Between Front Power Window Motor (Driver Side) Connector D7 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: GO TO 2.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver door control unit (LCU01) and front power window motor (driver side) connector.
3. Check continuity between driver door control unit (LCU01) connector D8 terminal 4 and front power window motor (driver side) connector D7 terminal 4.
  4 (W) - 4 (W): Continuity should exist.
  
  Fig 2: Checking Continuity Between Driver Door Control Unit And Front Power Window Motor
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace driver door control unit (LCU01).
- NG: Repair or replace harness.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Disconnect front power window motor (driver side) connector.
3. Check continuity between front power window motor (driver side) connector D7 terminal 6 and ground.
  6 (B) - Ground: Continuity should exist.
  
  Fig 3: Checking Continuity Between Front Power Window Motor (Driver Side) Connector D7 Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.

CHECK ENCODER SIGNAL

Connect front power window motor (driver side) connector.
Turn ignition switch ON.

Check the signal between driver door control unit (LCU01) connector and ground with oscilloscope.

ENCODER SIGNAL

Connector	Terminals (Wire color)		Condition	Signal (Reference value)
Connector	(+)	(-)	Condition	Signal (Reference value)
D8	1 (G)	Ground	Down	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Signal Between Driver Door Control Unit (LCU01) Connector And Ground

G04129787

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

OK or NG

OK: Encoder function is OK.
NG: GO TO 5

CHECK ENCODER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver door control unit and front power window motor (driver side) connector.
3. Check continuity between driver door control unit (LCU01) connector D8 terminal 1 and front power window motor (driver side) connector D7 terminal 3.
  1 (G) - 3 (G): Continuity should exist.
  
  Fig 5: Checking Continuity Between Driver Door Control Unit And Front Power Window Motor
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace front power window motor (driver side).
- NG: Repair or replace harness.