Check Front Lifting Sensor Circuit

1. CHECK FUNCTION 

   With CONSULT-II 

   Check operation with "LIFT FR PULSE" on the DATA MONITOR to make sure the pulse changes.

   Fig 1: Identifying CONSULT II Display - DATA MONITOR

   Courtesy of NISSAN MOTOR CO., U.S.A.
   LIFT FR PULSE FUNCTION (WITH CONSULT-II)
   
   

   Monitor item [OPERATION or UNIT]	Contents
   LIFT FR PULSE	The front lifting position (pulse) judged from the front lifting sensor is displayed

   Without CONSULT-II 

   1. Turn ignition switch OFF.
   2. Check signal between driver seat control unit connector and ground, with oscilloscope.
   Fig 2: Identifying Checking Signal Between Driver Seat Control Unit Connector And Ground
   Courtesy of NISSAN MOTOR CO., U.S.A.
   DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND (WITHOUT CONSULT-II)
   
   

   Connector	Terminals (Wire color)		Condition	Signal (Reference value)
   	(+)	(-)
   B152	19 (G/R)	Ground	Front lifting motor operation	Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK: Front lifting sensor circuit is OK.

   NG: GO TO 2.

2. CHECK FRONT LIFTING SENSOR HARNESS CONTINUITY 

1. Disconnect driver seat control unit connector and front lifting motor connector.
2. Check continuity between driver seat control unit connector B152 terminals 19, 28C and front lifting motor connector B164 terminals 19, 28A.

   19 (G/R) - 19 (G/R) : Continuity should exist. 

   28C (B/W) - 28A (B/W) : Continuity should exist. 

3. Check continuity between driver seat control unit connector B152 terminals 19, 28C and ground.

   19 (G/R) - Ground : Continuity should not exist. 

   28C (B/W) - Ground : Continuity should not exist. 

   Fig 3: Checking Front Lifting Sensor Harness Continuity

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

OK or NG 

OK: Replace front lifting motor.

NG: Repair or replace harness between driver seat control unit and front lifting motor.