Diagnosis Procedure

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

1. CHECK TRUNK LAMP SWITCH INPUT SIGNAL
   1. Turn ignition switch OFF.
   2. Check voltage between BCM connector and ground.

      Terminals			Trunk condition	Voltage (V) (Approx.)
      (+)		(-)
      BCM connector	Terminal
      M21	130	Ground	OPEN	0
      			CLOSE

      Fig 1: Checking Trunk Lamp Switch Input Signal

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO  6

      NO: GO TO 2

2. CHECK TRUNK LAMP SWITCH CIRCUIT
   1. Disconnect BCM and trunk lamp switch and trunk release solenoid connectors.
   2. Check continuity between BCM connector and trunk lamp switch and trunk release solenoid connector.

      BCM connector	Terminal	Trunk lamp switch and trunk release solenoid connector	Terminal	Continuity
      A: M21	130	B: T4	1	Yes

   3. Check continuity between BCM connector and ground.

      BCM connector	Terminal	Ground	Continuity
      A: M21	130		No

      Fig 2: Checking Trunk Lamp Switch Circuit

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness between BCM and trunk lamp switch and trunk release solenoid.

3. CHECK TRUNK LAMP SWITCH GROUND CIRCUIT

   Check continuity between trunk lid lock assembly connector and ground.

   Trunk lamp switch and trunk release solenoid connector	Terminal	Ground	Continuity
   T4	2		Yes

   Fig 3: Checking Trunk Lamp Switch Ground Circuit

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: GO TO 4

   NO: Repair or replace trunk lamp switch and trunk release solenoid ground circuit.

4. CHECK BCM OUTPUT SIGNAL
   1. Insure trunk remains closed during this step.
   2. Connect BCM connector.
   3. Check voltage between BCM connector and ground.

      Terminals			Voltage (V) (Approx.)
      (+)		(-)
      BCM connector	Terminal
      M21	130	Ground

      Fig 4: Checking BCM Output Signal

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 5

      NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

5. CHECK TRUNK ROOM LAMP SWITCH

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 6

   NO: Replace trunk lamp switch and trunk release solenoid.

6. CHECK INTERMITTENT INCIDENT

   Refer to "INTERMITTENT INCIDENT ".

   Inspection End.