Front Lifting Switch Circuit Inspection

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: CONSULT-II Display - LIFT FR SW-UP, LIFT FR SW-DN On DATA MONITOR

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

Without CONSULT-II 

1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and ground.
   Fig 2: Checking Voltage Between Driver Seat Control Unit Connector And Ground

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

   Connector	Terminals (Wire color)		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   B303	26 (L/P)	Ground	Front lifting switch ON (UP operation)	0
   			Front lifting switch OFF	Battery voltage
   	39 (L/G)		Front lifting switch ON (DOWN operation)	0
   			Front lifting switch OFF	Battery voltage

OK or NG

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

1. Disconnect driver seat control unit connector and power seat switch connector.
2. Check continuity between driver seat control unit connector B152 terminals 26 (L/P), 39 (L/G) and power seat switch connector B156 terminals 26 (L/P), 39 (L/G).
   Fig 3: Checking Front Lifting Switch Harness Continuity

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

   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 (L/P), 39 (L/G) and ground

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

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

OK or NG

1. OK: GO TO 3.
2. NG: Repair or replace harness between driver seat control unit and power seat switch.

Check continuity between power seat switch as follows.

Fig 4: Checking Front End Lifting Switch

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

OK or NG

1. OK: Check the condition of the harness and connector.
2. NG: Replace power seat switch.