Front Lifting Motor Circuit Check

Check the following.

• Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign materials
• Operation malfunction caused by foreign materials adhered to the lifter motor or lead screws
• Operation malfunction and interference with other parts by installation

OK or NG 

1. OK : GO TO 2.
2. NG : Repair the malfunctioning part and check again.

With CONSULT-II 

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

Fig 1: Active Test Display

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

Without CONSULT-II 

GO TO 3.

OK or NG 

1. OK : Front lifting motor circuit is OK.
2. NG : GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect driver seat control unit connector and front lifting motor connector.
3. Check continuity between driver seat control unit connector B153 and terminals 5, 13 and front lifting motor connector B164 terminals 5, 13.
   1. 5 (LG) - 5 (LG) : Continuity should exist. 
   2. 13 (Y) - 13 (Y) : Continuity should exist. 
4. Check continuity between driver seat control unit connector B153 and terminals 5, 13 and ground.
   1. 5 (LG) - Ground : Continuity should not exist. 
   2. 13 (Y) - Ground : Continuity should not exist. 

OK or NG 

1. OK : GO TO 4.
2. NG : Repair or replace harness between driver seat control unit and front lifting motor.

Fig 2: Checking Continuity Between Driver Seat Control Unit Connector B153 And Terminals 5, 13 And Ground

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

1. Connect the driver seat control unit connector.
2. Front lifting switch operate, check voltage between driver seat control unit connector and ground.
   Fig 3: Voltage Table

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

OK or NG 

1. OK : Replace front lifting motor.
2. NG : Replace driver seat control unit.

Fig 4: Checking Voltage Between Driver Seat Control Unit Connector And Ground

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