Front Lifting Motor Circuit Check

1. 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 front lifting motor or lead screws
   • Operation malfunction and interference with other parts by installation

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace the malfunctioning part and check again.

2. CHECK FUNCTION 

   With CONSULT-II 

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

   TEST ITEM DESCRIPTION
   
   

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

   Fig 1: CONSULT II ACTIVE TEST Screen

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

   OK or NG 

   OK: Front lifting motor circuit is OK.

   NG: GO TO 3.

3. CHECK FRONT LIFTING MOTOR CIRCUIT HARNESS CONTINUITY 
   1. Turn ignition switch OFF.
   2. Disconnect driver seat control unit and front lifting motor connector.
   3. Check continuity between driver seat control unit connector and front lifting motor connector.
      DRIVER SEAT CONTROL UNIT CONNECTOR AND FRONT LIFTING MOTOR CONNECTOR CONTINUITY
      
      

      A		B		Continuity
      Driver seat control unit connector	Terminal	Front lifting motor connector	Terminal
      B205	37	B209	37	Yes
      	45		45

   4. Check continuity between driver seat control unit connector and ground.
   DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND CONTINUITY
   
   

   A		Ground	Continuity
   Driver seat control unit connector	Terminal
   B205	37		No
   	45

   Fig 2: Identifying Continuity Between Driver Seat Control Unit Connector And Front Lifting Motor Connector

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

   OK or NG 

   OK: GO TO 4.

   NG: Repair or replace harness.

4. CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL 

1. Connect the driver seat control unit connector.
2. Check voltage between driver seat control unit connector and ground.

Fig 3: Identifying Voltage Between Driver Seat Control Unit Connector And Ground

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

OK or NG 

OK: Replace front lifting motor.

NG: Replace driver seat control unit.