Check Encoder Circuit (Driver Side)

CHECK FRONT POWER WINDOW MOTOR (DRIVER SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between front power window motor (driver side) connector D8 terminal 4 and ground.
  4 (W) - Ground : Approx.10V
  
  Fig 1: Identifying Voltage Between Front Power Window Motor Connector D8 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
1. Turn ignition switch OFF.
2. Disconnect power window main switch and front power window motor (driver side).
3. Check continuity between power window main switch connector D6 terminal 15 and front power window motor (driver side) connector D8 terminal 4.
  15 (W) - 4 (W) : Continuity should exist.
  
  Fig 2: Identifying Continuity Between Power Window Main Switch Terminal 15 And Front Power Window Motor Terminal 4
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : Replace power window main switch.

NG : Repair or replace harness.
CHECK GROUND CIRCUIT
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 D8 terminal 6 and ground.
  6 (SB) - Ground : Continuity should exist.
  
  Fig 3: Identifying Continuity Between Front Power Window Motor Connector D8 Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : GO TO 5.

NG : GO TO 4.
CHECK HARNESS CONTINUITY 2
1. Disconnect power window main switch connector.
2. Check continuity between power window main switch connector D6 terminal 2 and front power window motor (driver side) connector D8 terminal 6.
  2 (SB) - 6 (SB) : Continuity should exist.
  
  Fig 4: Identifying Continuity Between Power Window Main Switch Terminal 2 And Front Power Window Motor Terminal 6
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : Replace power window main switch.

NG : Repair or replace harness.

CHECK ENCODER SIGNAL

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

Check signal between power window main switch connector and ground with oscilloscope.

SIGNAL REFERENCE VALUE CHART

Connector	Terminals (Wire color)		Condition	Signal (Reference value)
Connector	(+)	(-)	Condition	Signal (Reference value)
D6	13 (PU)	Ground	Window DOWN

Fig 5: Identifying Signal Between Power Window Main Switch Connector And Ground With Oscilloscope

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

OK or NG

OK : Replace power window main switch.

NG : GO TO 6.

CHECK HARNESS CONTINUITY 3
1. Turn ignition switch OFF.
2. Disconnect power window main switch and front power window motor (driver side) connector.
3. Check continuity between power window main switch connector D6 terminal 13 and front power window motor (driver side) connector D8 terminal 3.
  13 (PU) - 3 (PU) : Continuity should exist.
  
  Fig 6: Identifying Continuity Between Power Window Main Switch Terminal 13 And Front Power Window Motor Terminal 3
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : Replace front power window motor (driver side).

NG : Repair or replace harness.