Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITHOUT INTELLIGENT KEY SYSTEM ".

1. CHECK DOOR SWITCHES INPUT SIGNAL

   With CONSULT

   Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR SW") in DATA MONITOR mode with CONSULT.

   • When doors are open:

     DOOR SW-DR: ON 

     DOOR SW-AS: ON 

     DOOR SW-RL: ON 

     DOOR SW-RR: ON 

     BACK DOOR SW: ON 

   • When doors are closed:

     DOOR SW-DR: OFF 

     DOOR SW-AS: OFF 

     DOOR SW-RL: OFF 

     DOOR SW-RR: OFF 

     BACK DOOR SW: OFF 

   Without CONSULT

   Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.

   Connector	Item	Terminals		Condition	Voltage (V) (Approx.)
   		(+)	(-)
   M19	Back door switch/latch	43	Ground	Open ↓ Closed	0 ↓ Battery voltage
   	Front door switch LH	47
   	Rear door switch LH	48
   M18	Front door switch RH	12
   	Rear door switch RH	13

   Fig 1: Checking Voltage Between BCM Connector M18 Or M19 Terminals 12, 13, 43, 47, 48 And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Door switch circuit is OK.

   NO: GO TO 2

2. CHECK DOOR SWITCH CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect door switch and BCM.
   3. Check continuity between BCM connector (A) M18, M19 terminals 12, 13, 43, 47, 48 and door switch connector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 or back door latch connector (C) D502 terminal 3.

      2 - 47: Continuity should exist 

      2 - 12: Continuity should exist 

      2 - 48: Continuity should exist 

      2 - 13: Continuity should exist 

      3 - 43: Continuity should exist 

   4. Check continuity between door switch connector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 or back door latch connector (C) D502 terminal 7 and ground.

      2 - Ground: Continuity should not exist 

      3 - Ground: Continuity should not exist 

      Is the inspection result normal? 

      YES: (Front and rear doors) GO TO 3.

      YES: (Back door) GO TO  4.

      NO: Repair or replace harness.

      Fig 2: Checking Continuity Between Back Door Latch Connector D502 Terminal 3 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.
3. CHECK DOOR SWITCH
   • Check continuity between door switch terminals.

     Switch	Terminals	Condition	Continuity
     Door switch	2 - Ground	Open	Yes
     		Closed	No

     Is the inspection result normal? 

     YES: Door switch circuit is OK.

     NO: Replace door switch.

     Fig 3: Checking Continuity Between Door Switch Terminals

     Courtesy of NISSAN NORTH AMERICA, INC.
4. CHECK BACK DOOR LATCH CIRCUIT
   • Check continuity between back door latch connector terminal 4 and ground.

     Connector	Terminals	Continuity
     Back door latch	4 - Ground	Yes

     Is the inspection result normal? 

     YES: GO TO 5.

     NO: Repair or replace harness.

     Fig 4: Checking Continuity Between Back Door Latch Connector Terminal 4 And Ground

     Courtesy of NISSAN NORTH AMERICA, INC.
5. CHECK BACK DOOR LATCH SWITCH
   • Check continuity between back door latch switch terminals.

     Switch	Terminals	Condition	Continuity
     Back door latch	3 - 4	Open	Yes
     		Closed	No

     Is the inspection result normal? 

     YES: Back door latch switch circuit is OK.

     NO: Replace back door latch.

     Fig 5: Checking Continuity Between Back Door Latch Switch Terminals 3 And 4

     Courtesy of NISSAN NORTH AMERICA, INC.