Rear Lifting Switch Circuit Check

With CONSULT-II 

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

Fig 1: Scan Tool Displaying 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.
   VOLTAGE CHECK CHART
   
   

   Connector	Terminals (Wire color)		Condition	Voltage (V) (Approx)
   	(+)	(-)
   B303	14 (Y/R)	Ground	Rear lifting switch ON (DOWN operation)	0
   			Rear lifting switch OFF	Battery voltage
   	29 (W/G)		Rear lifting switch ON (UP operation)	0
   			Rear lifting switch OFF	Battery voltage

   Fig 2: Checking Voltage Between Driver Seat Control Unit Connector And Ground

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

OK or NG

1. OK: Rear 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 B303 terminals 14 (Y/R), 29 (W/G) and power seat switch connector B305 terminals 14 (Y/R), 29 (W/G).

   14 (Y/R) - 14 (Y/R): Continuity should exist. 

   29 (W/G) - 29 (W/G): Continuity should exist. 

3. Check continuity between driver seat control unit connector B303 terminals 14 (Y/R), 29 (W/G) and ground.

   14 (Y/R) - Ground: Continuity should not exist. 

   29 (W/G) - Ground: Continuity should not exist. 

   Fig 3: Checking Continuity Between Driver Seat Control Unit Connector And Power Seat Switch Connector, And Ground

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

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 driver seat switch as follows.

OK or NG

1. OK: Check the condition of the harness and connector.
2. NG: Replace power seat switch.
   Fig 4: Checking Continuity Between Driver Seat Switch

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