Diagnosis Procedure

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

1. CHECK SLIDING SENSOR SIGNAL 
   1. Turn ignition switch OFF.
   2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.

      Terminals			Condition		Voltage signal
      (+)		(-)
      Driver's seat control unit	Terminal
      B202	24	Ground	Seat sliding	Operate
      				Other than above	0 or 5

      Fig 1: Checking Sliding Sensor Signal Using Oscilloscope

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO  4

      NO: GO TO 2

2. CHECK SLIDING SENSOR CIRCUITS 
   1. Disconnect driver seat control unit and sliding motor LH.
   2. Check continuity between driver seat control unit harness connector and sliding motor LH harness connector.

      Driver seat control unit connector	Terminal	Sliding motor LH connector	Terminal	Continuity
      B202 (A)	16	B204 (B)	3	Yes
      	24		4
      	31		2

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

      Courtesy of NISSAN NORTH AMERICA, INC.

      Driver seat control unit connector	Terminal	Ground	Continuity
      B202 (A)	16		No
      	24
      	31

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness.

3. CHECK SEAT OPERATION 
   1. Connect driver seat control unit and sliding motor LH.
   2. Check seat operation (except sliding operation) with memory function.

      Is the inspection result normal? 

      YES: Replace sliding motor LH. (Built in power seat frame assembly). Refer to "DISASSEMBLY AND ASSEMBLY ".

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

4. 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 the malfunctioning part.