Diagnosis Procedure

Regarding Wiring Diagram information, Refer to "WIRING DIAGRAM ".

1. CHECK SLIDING SWITCH SIGNAL 
   1. Turn ignition switch OFF.
   2. Check voltage between driver seat control unit harness connector and ground.

      Driver seat control unit connector	Terminals		Condition		Voltage (V) (Approx.)
      	(+)	(-)
      B202	11	Ground	Sliding switch	Operate (backward)	0
      				Release	Battery voltage
      	26			Operate (forward)	0
      				Release	Battery voltage

      Fig 1: Checking Sliding Switch Signal Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO  5

      NO: GO TO 2

2. CHECK SLIDING SWITCH CIRCUIT 
   1. Disconnect driver seat control unit and power seat switch LH.
   2. Check continuity between driver seat control unit harness connector and power seat switch LH harness connector.

      Driver seat control unit connector	Terminal	Power seat switch LH connector	Terminal	Continuity
      B202 (A)	11	B208 (B)	1	Yes
      	26		5

   3. Check continuity between driver seat control unit harness connector and ground.
      Fig 2: Checking Sliding Switch Circuit Continuity

      Courtesy of NISSAN NORTH AMERICA, INC.

      Driver seat control unit connector	Terminal	Ground	Continuity
      B202 (A)	11		No
      	26

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness.

3. CHECK DRIVER SEAT CONTROL UNIT OUTPUT 
   1. Connect the driver seat control unit.
   2. Turn ignition switch ON.
   3. Check voltage between driver seat control unit harness connector and ground.

      Driver seat control unit connector	Terminals		Voltage (V) (Approx.)
      	(+)	(-)
      B202	11	Ground	Battery voltage
      	26

      Fig 3: Checking Driver Seat Control Unit Output Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Replace driver seat control unit. Refer to "REMOVAL AND INSTALLATION ".

4. CHECK SLIDING SWITCH 

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 5

   NO: Replace power seat switch LH. Refer to "DISASSEMBLY AND ASSEMBLY ".

5. CHECK INTERMITTENT INCIDENT 

   Refer to "INTERMITTENT INCIDENT ".

   Is the inspection result normal? 

   YES: Replace driver seat control unit. Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace malfunctioning part.