Check Encoder Circuit

CHECK ENCODER POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect front power window motor (driver side) connector.
3. Turn ignition switch ON.
4. Check voltage between front power window motor (driver side) harness connector D5 terminal 5 and ground.
  5 (G/R) - Ground : Approx. 10V
  
  Fig 1: Checking Voltage Between Front Power Window Motor (Driver Side) Harness Connector D5 Terminal 5 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 power window main switch connector.
3. Check continuity between power window main switch harness connector D7 terminal 7 and front power window motor (driver side) harness connector D5 terminal 5.
  7 (G/R) - 5 (G/R) : Continuity should exist.
  
  Fig 2: Checking Continuity Between Power Window Main Switch And Front Power Window Motor (Driver Side) Harness Connectors Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: Replace power window main switch.
  
  NG: Repair or replace harness between power window main switch and front power window motor (driver side).
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Check continuity between front power window motor (driver side) harness connector D5 terminal 8 and ground.
  8 (W/B) - Ground : Continuity should exist.
  
  Fig 3: Checking Continuity Between Front Power Window Motor (Driver Side) Harness Connector D5 Terminal 8 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 5.
  
  NG: GO TO 4.
CHECK ENCODER GROUND CIRCUIT
1. Disconnect power window main switch connector.
2. Check continuity between power window main switch harness connector D7 terminal 8 and front power window motor (driver side) harness connector D5 terminal 8.
  8 (W/B) - 8 (W/B) : Continuity should exist.
  
  Fig 4: Checking Continuity Between Power Window Main Switch And Front Power Window Motor (Driver Side) Harness Connectors Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: Replace power window main switch.
  
  NG: Repair or replace harness between power window main switch and front power window motor (driver side).

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.

POWER WINDOW MAIN SWITCH CONNECTOR TERMINAL REFERENCE CHART

Connector	Terminal (Wire color)		Condition	Signal (Reference value)
Connector	(+)	(-)	Condition	Signal (Reference value)
D7	16 (G/Y)	Ground	opening	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Signal Between Power Window Main Switch Connector And Ground

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

OK or NG

OK: Replace power window main switch.

NG: GO TO 6.

CHECK ENCODER CIRCUIT
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 harness connector D7 terminal 16 and front power window motor (driver side) harness connector D5 terminal 6.
  16 (G/Y) - 6 (G/Y) : Continuity should exist.
  
  Fig 6: Checking Continuity Between Power Window Main Switch And Front Power Window Motor (Driver Side) Harness Connectors Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: Replace front power window motor (driver side).
  
  NG: Repair or replace harness between power window main switch and front power window motor (driver side).