Door Switch Check

WARNING: This page is about a different car, the 2006 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT-II

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

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

Fig 1: Identifying Scan Tool Display - Data Monitor
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

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

TERMINALS VOLTAGE CHART

Connector	Item	Terminals		Condition	Voltage (V) (Approx.)
Connector	Item	(+)	(-)	Condition	Voltage (V) (Approx.)
M19	Back door latch (door ajar switch)	43	Ground	Open then Closed	0 then 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 2: Identifying Voltage Between BCM Connector M18 Or M19 Terminals 12, 13, 43, 47, 48 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK : Door switch circuit is OK.
NG : GO TO 2.

CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. 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) D503 terminal 7 and BCM connectors (A) M18, M19 terminals 12, 13, 43, 47 and 48.
  2 - 12 : Continuity should exist.
  
  2 - 13 : Continuity should exist.
  
  2 - 47 : Continuity should exist.
  
  2 - 48 : Continuity should exist.
  
  7 - 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) D503 terminal 7 and ground.
  2 - Ground : Continuity should not exist.
  
  7 - Ground : Continuity should not exist.
  
  Fig 3: Identifying Continuity Between Door Switch Connector B8, B18, B116 Terminal 2 D503 Terminal 7 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 3.
- NG : Repair or replace harness.
CHECK DOOR SWITCHES
FRONT AND REAR DOORS

Check continuity between front or rear door switch terminal 2 and exposed metal of switch while pressing and releasing switch.

Door switch is released : Continuity should exist.

Door switch is pushed : Continuity should not exist.

Fig 4: Identifying Continuity Between Front Or Rear Door Switch Terminal 2 And Exposed Metal Of Switch
Courtesy of NISSAN MOTOR CO., U.S.A.

BACK DOOR

Check continuity between back door latch connector (A) D503 terminals 7 and 8 while pressing (closing back door) and releasing (opening back door) switch.

When back door is open : Continuity should exist.

When back door is closed : Continuity should not exist.

Fig 5: Identifying Continuity Between Back Door Latch Connector D503 Terminals 7 And 8
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : (Front and rear doors) Switch circuit is OK.
- OK : (Back door) GO TO 4.
- NG : Replace door switch.
CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch connector terminal 8 and ground.

8 - Ground : Continuity should exist.

Fig 6: Identifying Continuity Between Back Door Latch Connector Terminal 8 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : Back door switch circuit is OK.
- NG : Repair or replace harness.