Reclining Sensor Circuit Inspection

WARNING: This page is about a different car, the 2003 Nissan Murano. 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 CHART

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

Fig 1: Displaying "RECLINING PULSE" on 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: Oscilloscope Signal Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Checking Signal Between Driver Seat Control Unit Connector And 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 connector and reclining motor connector.
2. Check continuity between driver seat control unit connector B303 terminals 9 (L), 31 (R/W) and reclining motor connector B311 terminals 9 (L), 31 (R/W).
  1. 9 (L) - 9 (L): Continuity should exist.
  2. 31 (R/W) - 31 (R/W): Continuity should exist.
3. Check continuity between driver seat control unit connector B303 terminals 9 (L), 31 (R/W) and ground.
  1. 9 (L) - Ground: Continuity should not exist.
  2. 31 (R/W) - Ground: Continuity should not exist.
  Fig 4: Checking Continuity Between Driver Seat Control Unit Connector B303 Terminals 9, 31 And Reclining Motor Connector B311 Terminals 9, 31, And Between Connector B303 Terminals 9 , 31 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Replace reclining motor.
2. NG : Repair or replace harness between connectors driver seat control unit and reclining motor.