Reclining Sensor Circuit 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.

CHECK FUNCTION

With CONSULT-II

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

CHECK FUNCTION

Monitor item [OPERATION or UNIT]		Contents
RECLN PULSE	-	The seat reclining position (pulse) judged from the reclining sensor is displayed

Fig 1: Display DATA MONITOR

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

Without CONSULT-II

Turn ignition switch OFF.
Check signal between driver seat control unit connector and ground, with oscilloscope.

Fig 2: Terminal Signal
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Reclining sensor circuit is OK.
NG: GO TO 2.

Fig 3: Checking Signal Between Driver Seat Control Unit Connector & Ground

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

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 (L), 31 (Y) and reclining motor LH connector B311 terminals 1 (Y), 2 (L).
  1. 9 (L) - 2 (L): Continuity should exist.
  2. 31 (Y) -1 (Y): Continuity should exist.
3. Check continuity between driver seat control unit connector P2 terminals 9 (L), 31 (R/W) and ground.
  1. 9 (L) - Ground: Continuity should not exist.
  2. 31 (Y) - Ground: Continuity should not exist.
OK or NG
1. OK: Replace reclining motor.
2. NG: Repair or replace harness.
Fig 4: Checking Continuity Between Driver Seat Control Unit Connector & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.