Check Front Lifting Switch Circuit

1. CHECK FUNCTION 

   With CONSULT-II 

   With "LIFT FR SW-UP, LIFT FR SW-DN" on the DATA MONITOR, operate the front lifting switch to check ON/OFF operation.

   Fig 1: Identifying CONSULT II Display - DATA MONITOR

   Courtesy of NISSAN MOTOR CO., U.S.A.
   LIFT FR SW-UP, LIFT FR SW-DN (WITH CONSULT-II)
   
   

   Monitor item [OPERATION or UNIT]		Contents
   LIFT FR SW - DN	"ON/OFF"	ON/OFF status judged from the FR lifter switch (DOWN) signal is displayed.
   LIFT RR SW - UP	"ON/OFF"	ON/OFF status judged from the RR lifter switch (UP) signal is displayed.

   Without CONSULT-II 

   1. Turn ignition switch OFF.
   2. Front lifting switch operate, check voltage between driver seat control unit connector and ground.
   Fig 2: Identifying Voltage Between Driver Seat Control Unit Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   BETWEEN DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND (WITHOUT CONSULT-II)
   
   

   Connector	Terminals (Wire color)		Front lifting switch condition	Voltage (V) (Approx.)
   	(+)	(-)
   B152	26 (L/P)	Ground	UP	0
   			Other than above	Battery voltage
   	39 (L/G)		DOWN	0
   			Other than above	Battery voltage

   OK or NG 

   OK: Front lifting switch circuit is OK.

   NG: GO TO 2.

2. CHECK HARNESS CONTINUITY 
   1. Disconnect driver seat control unit connector and power seat switch connector.
   2. Check continuity between driver seat control unit connector B152 terminals 26, 39 and power seat switch connector B175 terminals 26, 39.

      26 (L/P) - 26 (L/P) : Continuity should exist. 

      39 (L/G) - 39 (L/G) : Continuity should exist. 

   3. Check continuity between driver seat control unit connector B152 terminals 26, 39 and ground

      26 (L/P) - Ground : Continuity should not exist. 

      39 (L/G) - Ground : Continuity should not exist. 

      Fig 3: Identifying Continuity Between Driver Seat Control Unit Connector B152 Terminals 26, 39 And Ground

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

   OK or NG 

   OK: GO TO 3.

   NG: Repair or replace harness between driver seat control unit and power seat switch.

3. CHECK FRONT LIFTING SWITCH 

Front lifting switch operate, check continuity between power seat switch connector B175 terminal 26, 39 and 61B.

Fig 4: Identifying Continuity Between Power Seat Switch Connector B175 Terminal 26, 39 And 61B

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

OK or NG 

OK: Check the condition of the harness and connector.

NG: Replace power seat switch.