Reclining Sensor Circuit Inspection

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUNCTION
With CONSULT-II

Check operation with "RECLN PULSE" on the DATA MONITOR to make sure the pulse changes.

Fig 1: Monitor Item Contents Chart - Recline Pulse
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: CONSULT-II Display - DATA MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II
1. Turn ignition switch OFF.
2. Check signal between driver seat control unit connector and ground, with oscilloscope.
  
  Fig 3: Driver Seat Control Unit Connector P2 Terminal Signal Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Signal Between Driver Seat Control Unit Connector Terminal 9 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Reclining sensor circuit is OK.
- NG : GO TO 2.
CHECK RECLINING SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect driver seat control unit and reclining motor LH.
2. Check continuity between driver seat control unit connector P2 terminals 9, 31 and reclining motor LH connector B311 terminals 1, 2.
  9 (L) - 2 (L) : Continuity should exist.
  
  31 (Y) - 1 (Y) : Continuity should exist.
  
  Fig 5: Checking Continuity Between Driver Seat Control Unit Connector P2 Terminals 9, 31 & Reclining Motor LH Connector B311 Terminals 1, 2
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between driver seat control unit connector P2 terminals 9, 31 and ground.
  9 (L) - Ground : Continuity should not exist.
  
  31 (Y) - Ground : Continuity should not exist.
OK or NG
- OK : Replace reclining motor. Refer to FRONT SEAT .
- NG : Repair or replace harness.