Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITH INTELLIGENT KEY SYSTEM ".

1. BACK DOOR CLOSE SWITCH FUNCTION INSPECTION 

   Check back door close (close) switch using switch operation.

   Is the inspection result normal? 

   YES: Back door close switch is OK.

   NO: GO TO 2

2. BACK DOOR CLOSE SWITCH SIGNAL INSPECTION 
   1. Turn ignition switch OFF.
   2. While operating the back door close switch, check voltage between back door control unit connector B55 terminal 8 and ground.

      Terminals		Measuring condition		Voltage (V) (Approx.)
      (+)	(-)
      8	Ground	Back door close switch	ON	0
      			OFF	Battery voltage

      Fig 1: Checking Back Door Close Switch Signal Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Switch is OK.

      NO: GO TO 3

3. BACK DOOR CLOSE SWITCH CIRCUIT INSPECTION 
   1. Disconnect back door close switch and back door control unit connector.
   2. Check continuity between back door control unit connector (A) B55 terminal 8 and back door close switch connector (B) B63 terminal 1.

      8 - 1: Continuity should exist. 

   3. Check continuity between back door control unit connector (A) B55 terminal 8 and ground.

      8 - Ground: Continuity should not exist. 

      Fig 2: Checking Back Door Close Switch Circuit Continuity

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Repair the harness between the back door close switch and the back door control unit.

4. BACK DOOR CLOSE SWITCH GROUND INSPECTION 

   Check continuity between back door close switch connector B63 terminal 3 and ground.

   3 - Ground: Continuity should exist. 

   Fig 3: Checking Back Door Close Switch Ground Circuit Continuity

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Replace the back door close switch.

   NO: Repair the harness between the back door close switch and ground.