Encoder Circuit Check (Driver Side)

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DRIVER SIDE POWER WINDOW REGULATOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between driver side power window regulator connector D9 terminal 4 and ground.
  1. 4 (R) - Ground: Approx. 10V
OK or NG

OK: GO TO 3 .

NG: GO TO 2.

Fig 1: Checking Encoder Circuit Of Driver Side (Terminals 4 - Ground)
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect power window main switch and driver side power window regulator connector.
3. Check continuity between power window main switch connector D7 terminal 5 and driver side power window regulator connector D9 terminal 4.
  1. 5 (R) - 4 (R): Continuity should exist.
  Fig 2: Checking Harness Continuity (Terminals 5 - 4)
  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 driver side power window regulator.
CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Disconnect driver side power window regulator connector.
3. Check continuity between driver side power window regulator connector D9 terminal 6 and ground.
  1. 6 (PU) - Ground: Continuity should exist.
OK or NG

OK: GO TO 5 .

NG: GO TO 4.

Fig 3: Checking Encoder Ground Of Driver Side (Terminal 6 - Ground)
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND CIRCUIT
1. Disconnect power window main switch connector.
2. Check continuity between power window main switch connector D7 terminal 14 and driver side power window regulator connector D9 terminal 6.
  1. 14 (PU) - 6 (PU): Continuity should exist.
OK or NG

OK: Replace power window main switch.

NG: Repair or replace harness between power window main switch and driver side power window regulator.

Fig 4: Checking Encoder Ground Circuit Of Driver Side (Terminal 14-6)
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER SIGNAL
1. Connect driver side power window regulator connector.
2. Turn ignition switch ON.
3. Check the signal between power window main switch connector and ground with oscilloscope.
  
  Fig 5: Encoder Signal Terminal Condition Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Encoder Signal
  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 driver side power window regulator connector.
3. Check continuity between power window main switch connector D7 terminal 13 and driver side power window regulator connector D9 terminal 3.
  1. 13 (LG) - 3 (LG): Continuity should exist.
OK or NG

OK: Replace driver side power window regulator.

NG: Repair or replace harness between power window main switch and driver side power window regulator.

Fig 7: Checking Encoder Circuit (Terminal 13 - 3)
Courtesy of NISSAN MOTOR CO., U.S.A.