Lifting Motor (Front) 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 FRONT END SEAT LIFTING MECHANISM
Check the following.
- Operation malfunction caused by lifter mechanism deformation, pinched harness or other foreign materials
- Operation malfunction caused by foreign materials adhered to the lifting motor (front) or lead screws
- Operation malfunction and interference with other parts by installation
OK or NG
- OK : GO TO 2.
- NG : Repair the malfunctioning part and check again.

CHECK FUNCTION

With CONSULT-II

Check operation with "SEAT LIFTER FR" in ACTIVE TEST.

CONSULT-II ACTIVE TEST ITEM - SEAT LIFTER FR

Test item	Description
SEAT LIFTER FR	The lifting motor (front) is activated by receiving the drive signal.

Fig 1: CONSULT-II Display - ACTIVE TEST

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

Without CONSULT-II

GO TO 3.

OK or NG

OK : Lifting motor (front) circuit is OK.
NG : GO TO 3.

CHECK LIFTING MOTOR (FRONT) CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (front).
3. Check continuity between driver seat control unit connector P3 terminals 37, 45 and lifting motor (front) connector P6 terminals 4, 6.
  37 (Y/B) - 6 (Y/B) : Continuity should exist.
  
  45 (Y) - 4 (Y) : Continuity should exist.
4. Check continuity between driver seat control unit connector P3 terminals 37, 45 and ground.
  37 (Y/B) - Ground : Continuity should not exist.
  
  45 (Y) - Ground : Continuity should not exist.
  
  Fig 2: Checking Continuity Between Driver Seat Control Unit Connector P3 Terminals 37, 45 & Lifting Motor (Front) Connector P6 Terminals 4, 6 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 4.
- NG : Repair or replace harness.
CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
1. Connect the driver seat control unit and lifting motor (front).
2. Check voltage between driver seat control unit connector and ground.
  
  Fig 3: Driver Seat Control Unit Connector Terminal Voltage Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Voltage Between Driver Seat Control Unit Connector Terminals 37, 45 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Replace lifting motor (front). Refer to FRONT SEAT .
- NG : Replace driver seat control unit. Refer to FRONT SEAT .