Sliding Door Encoder System Inspection

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

SLIDING DOOR ENCODER POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Check voltage between sliding door control unit connector terminal 11 and ground.
  11 - Ground: Approx. 9V
OK or NG
1. OK: GO TO 3 .
2. NG: GO TO 2.
Fig 1: Checking Voltage Between Sliding Door Control Unit Connector Terminal 11 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
SLIDING DOOR ENCODER GROUND CIRCUIT INSPECTION
Check continuity between sliding door control unit connector terminal 22 and ground.

22 - Ground: Continuity should exist.

OK or NG
1. OK: GO TO 4 .
2. NG: Replace sliding door control unit.
Fig 2: Checking Continuity Between Sliding Door Control Unit Connector Terminal 22 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
ENCODER (POSITION) SIGNAL INSPECTION
Operate the sliding door and check voltage waveform between sliding door control unit connector terminals 4, 17 and ground using an oscilloscope.

Fig 3: Sliding Door Control Unit Connector Terminals 4, 17 And Ground Waveform
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Voltage Waveform Between Sliding Door Control Unit Connector Terminals 4, 17 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 4.
2. NG: Replace sliding door encoder.
SLIDING DOOR ENCODER CIRCUIT INSPECTION
1. Disconnect sliding door control unit and sliding door encoder.
2. Check voltage between sliding door control unit connector terminals 4, 11, 17, 22 and sliding door encoder terminals 1, 2, 3, 4 and ground.
  Sliding Door RH
  
  11 - 1: Continuity should exist.
  
  17 - 2: Continuity should exist.
  
  22 - 4: Continuity should exist.
  
  4 - 3: Continuity should exist.
  
  Sliding Door LH
  
  11 - 1: Continuity should exist.
  
  17 - 3: Continuity should exist.
  
  22 - 4: Continuity should exist.
  
  4 - 2: Continuity should exist.
OK or NG
1. OK: System is OK.
2. NG: Repair the harness connector between the sliding door control unit and the sliding door encoder.
Fig 5: Checking Voltage Between Sliding Door Control Unit Connector Terminals And Sliding Door Encoder Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.