Sliding Door Encoder System Inspection

WARNING: This page is about a different car, the 2006 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 B60 (LH) or B143 (RH) terminal 11 and ground.
  11 - Ground: Approx. 9V
OK or NG

OK: GO TO 3.

NG: GO TO 2.

Fig 1: Identifying Voltage Between Sliding Door Control Unit Connector B60 (LH) Or B143 (RH) 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 B60 (LH) or B143 (RH) terminal 22 and ground.

22 - Ground: Continuity should exist.

OK or NG

OK: GO TO 4.

NG: Replace sliding door control unit.

Fig 2: Identifying Continuity Between Sliding Door Control Unit Connector B60 (LH) Or B143 (RH) 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 B60 (LH) or B143 (RH) terminals 4, 17 and ground using an oscilloscope.
TERMINALS VOLTAGE REFERENCE

4 - Ground
17 - Ground

Fig 3: Identifying Voltage Waveform Between Sliding Door Control Unit Connector B60 (LH) Or B143 (RH) Terminals 4, 17 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.

NG: Replace sliding door encoder.
SLIDING DOOR ENCODER CIRCUIT INSPECTION
1. Disconnect sliding door control unit and sliding door motor assembly.
2. Check continuity between sliding door control unit connector B60 (LH) or B143 (RH) (A) terminals 4, 11, 17, 22 and sliding door motor assembly connector B59 (LH) or B145 (RH) (B) terminals 1, 2, 3, 4.
  - Sliding Door RH
    4 - 3: Continuity should exist.
    
    11 - 1: Continuity should exist.
    
    17 - 2: Continuity should exist.
    
    22 - 4: Continuity should exist.
  - Sliding Door LH
    4 - 2: Continuity should exist.
    
    11 - 1: Continuity should exist.
    
    17 - 3: Continuity should exist.
    
    22 - 4: Continuity should exist.
  Fig 4: Identifying Continuity Between Sliding Door Control Unit Connector Terminals And Sliding Door Motor Assembly Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Sliding door encoder circuit is OK.

NG: Repair or replace harness.