Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

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

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.)
Connector	Item	(+)	(-)	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
M18	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

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 BCM Connector M18, M19 And Door Switch Connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) Terminals
Courtesy of NISSAN NORTH AMERICA, INC.

CHECK DOOR SWITCH

Check continuity between door switch terminals.

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

Fig 3: Checking Continuity Between Door Switch Terminals

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Door switch circuit is OK.

NO: Replace door switch.

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

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

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: GO TO 5.

NO: Repair or replace harness.

CHECK BACK DOOR LATCH SWITCH

Check continuity between back door latch switch terminals.

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

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

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Back door latch switch circuit is OK.

NO: Replace back door latch.