Encoder Circuit Check

CHECK ENCODER SIGNAL

Turn ignition switch ON.

Check the signal between rear power window control unit RH connector D309 terminal 4 and ground with oscilloscope.

Fig 1: Checking Signal Between Rear Power Window Control Unit RH Connector D309 Terminal 4 And Ground

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

TERMINAL SIGNAL CHART

Connector	Terminals		Condition	Signal
Connector	(+)	(-)	Condition	Signal
D309	4	Ground	Opening	Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: GO TO 2

No: Replace rear power window control unit RH.

CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit RH and rear power window motor RH.
3. Check continuity between rear power window control unit RH connector D309 terminal 4 and rear power window motor RH connector D304 terminal 3.
  4 - 3: Continuity should exist.
  
  Is the inspection result normal?
  
  YES: GO TO 3
  
  No: Repair or replace harness.
  
  Fig 2: Checking Continuity Between Rear Power Window Control Unit And Motor LH Or RH Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK REAR POWER WINDOW MOTOR RH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect rear power window motor RH.
3. Turn ignition switch ON.
4. Check voltage between rear power window motor RH connector D304 terminal 4 and ground.
  4 - Ground: Approx. 10V
  
  Is the inspection result normal?
  
  YES: GO TO 5
  
  No: GO TO 4
  
  Fig 3: Checking Voltage Between Rear Power Window Motor RH Connector D304 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window motor RH and rear power window control unit RH.
3. Check continuity between rear power window motor RH connector D304 (B) terminal 4 and rear power window control unit RH connector D309 (A) terminal 5.
  4 - 5: Continuity should exist.
  
  Is the inspection result normal?
  
  YES: Replace rear power window switch RH. Refer to "REMOVAL AND INSTALLATION ".
  
  No: Repair or replace harness.
  
  Fig 4: Identifying Continuity Between Rear Power Window Motor RH Connector And Rear Power Window Control Unit RH Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND
1. Disconnect rear power window motor RH.
2. Check continuity between rear power window motor RH connector D304 terminal 6 and ground.
  6 - Ground: Continuity should exist.
  
  Is the inspection result normal?
  
  YES: GO TO 7
  
  No: GO TO 6
  
  Fig 5: Checking Continuity Between Rear Power Window Motor RH Connector D304 Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ENCODER GROUND CIRCUIT
1. Disconnect rear power window control unit RH.
2. Check continuity between rear power window motor RH connector D304 terminal 6 and rear power window control unit RH connector D309 terminal 3.
  6 - 3: Continuity should exist.
  
  Is the inspection result normal?
  
  YES: Replace rear power window control unit RH.
  
  No: Repair or replace harness.
  
  Fig 6: Identifying Continuity Between Rear Power Window Motor RH Connector And Rear Power Window Control Unit RH Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK REAR POWER WINDOW MOTOR RH LIMIT SWITCH SIGNAL

Turn ignition switch ON.

Check voltage between rear power window control unit RH connector and ground.

CONNECTOR TERMINAL VOLTAGE CHART

Connector	Terminals		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
D209	3	Ground	Rear power window RH is between fully-open and just before fully-closed position (ON)	0
D209	3	Ground	Rear power window RH is between just before fully-closed position and fully-closed position (OFF)	5

Fig 7: Checking Voltage Between Rear Power Window Control Unit RH Connector Terminal 3 And Ground

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

Is the inspection result normal?

YES: Limit switch circuit is OK.

No: GO TO 8

CHECK REAR POWER WINDOW SWITCH RH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window control unit RH harness connector D309 terminal 2 and ground.
  2 - Ground: Approx. 5V
  
  Is the inspection result normal?
  
  YES: GO TO 9
  
  No: Replace rear power window control unit RH.
  
  Fig 8: Checking Voltage Between Rear Power Window Control Unit RH Harness Connector D309 Terminal 2 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit RH.
3. Check continuity between rear power window control unit RH connector D309 terminal 2 and rear power window motor RH connector D304 terminal 5.
  2 - 5: Continuity should exist.
  
  Is the inspection result normal?
  
  YES: Replace rear power window motor RH. Refer to "REMOVAL AND INSTALLATION ".
  
  No: Repair or replace harness.
  
  Fig 9: Checking Continuity Between Rear Power Window Control Unit RH Connector D309 Terminal 2 And Rear Power Window Motor RH Connector D304 Terminal 5
  Courtesy of NISSAN MOTOR CO., U.S.A.