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-R 

     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 Door Switch Input Signal Voltage

   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 (D) D502 (Without power back door) terminal 3 or (C) D503 (With power back door) terminal 7.

      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 

      7 - 43: Continuity should exist 

      Fig 2: Checking Door Switch Circuit Continuity

      Courtesy of NISSAN NORTH AMERICA, INC.
   4. Check continuity between door switch connector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 or (D) D502 (Without power back door) terminal 3 or (C) D503 (With power back door) terminal 7 and ground.

      2 - Ground: Continuity should not exist 

      3 - Ground: Continuity should not exist 

      7 - Ground: Continuity should not exist 

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness.

3. CHECK DOOR SWITCHES 
   • Disconnect door switch harness.
   • Check continuity between door switch connector terminals.

   Switch	Terminals	Condition	Continuity
   Door switch (front and rear)	2 - Ground	Open	Yes
   		Closed	No
   Back door switch (without power back door)	3 - Ground	Open	Yes
   		Closed	No
   Back door switch (with power back door)	7 - Ground	Open	Yes
   		Closed	No

   Fig 3: Checking Door Switch Continuity

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Door switch circuit is OK.

   NO: (Front and rear doors) Replace door switch.

   NO: (Back door) GO TO 4

4. CHECK BACK DOOR SWITCH CIRCUIT 
   • Check continuity between door switch connector terminal and ground.

   Connector	Terminals	Continuity
   A: Back door switch (without power back door)	1 - Ground	Yes
   B: Back door switch (with power back door)	8 - Ground	Yes

   Fig 4: Checking Back Door Switch Circuit Continuity

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Replace back door switch.

   NO: Repair or replace harness.