Seat Sensor Power Supply And Ground Inspection

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

CHECK SEAT SENSOR HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and seat motor assembly.
3. Check continuity between driver seat control unit connector P2 terminals 16, 31 and seat motor assembly P4 terminals 2, 4.
  16 (B/Y) - 2 (B/Y): Continuity should exist.
  
  31 (BR) - 4 (BR): Continuity should exist.
4. Check continuity between driver seat control unit connector P2 terminals 16, 31 and ground.
  16 (B/Y) - Ground: Continuity should not exist.
  
  31 (BR) - Ground: Continuity should not exist.
OK or NG
- OK: GO TO 2.
- NG: Repair or replace harness.
  
  Fig 1: Checking Seat Sensor Harness Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK SEAT SENSOR POWER SUPPLY
1. Connect driver seat control unit.
2. Turn ignition switch ON.
3. Check voltage between driver seat control unit connector P2 terminal 16 and ground.
  16 (B/Y) - Ground: Battery voltage.
OK or NG
- OK: GO TO 3.
- NG: Replace driver seat control unit.
  
  Fig 2: Checking Voltage Between Driver Seat Control Unit Connector P2 Terminal 16 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK SEAT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between driver seat control unit connector P2 terminal and ground.
  31 (BR) - Ground: Continuity should not exist.
OK or NG
- OK: Check the condition of the harness and connector.
- NG: Replace driver seat control unit.
  
  Fig 3: Checking Continuity Between Driver Seat Control Unit Connector P2 Terminal And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.