Door Switch Check (With Automatic Back Door System)

WARNING: This page is about a different car, the 2008 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT-III

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

When doors are open:
DOOR SW-DR : ON

DOOR SW-AS : ON

DOOR SW-RR : ON

DOOR SW-RL : ON

BACK DOOR SW : ON
When doors are closed:
DOOR SW-DR : OFF

DOOR SW-AS : OFF

DOOR SW-RR : OFF

DOOR SW-RL : OFF

BACK DOOR SW : OFF

Without CONSULT-III

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.)
M20	Back door latch (door ajar switch)	43	Ground	Open ↓ Closed	0 ↓ Battery voltage
	Front door switch LH	47
	Sliding door switch LH	48
M18	Front door switch RH	12
M18	Sliding 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 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), B46 (Sliding LH), B135 (Sliding RH) terminal 1 or back door latch (door ajar switch) connector (C) D511 terminal 7 and BCM connector (A) M18, M19 terminals 12, 13, 43, 47 and 48.
  1 - 47 : Continuity should exist.
  
  1 - 12 : Continuity should exist.
  
  1 - 48 : Continuity should exist.
  
  1 - 13 : Continuity should exist.
  
  7 - 43 : Continuity should exist.
4. Check continuity between door switch connector (B) B8 (Front LH), B108 (Front RH), B46 (Sliding LH), B135 (Sliding RH) terminal 1 or back door latch (door ajar switch) connector (C) D511 terminal 7 and ground.
  1 - Ground : Continuity should not exist.
  
  7 - Ground : Continuity should not exist.
OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

Fig 2: Checking Continuity Between Door Switch Connector (B) Terminal 1 Or Back Door Latch Connector (C) Terminal 7 And BCM Connector (A) Terminals, And Between Connector (B) Terminal 1 Or Connector (C) Terminal 7 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR SWITCHES
FRONT AND REAR DOORS

Check continuity between front or rear door switch terminal 1 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 3: Checking Continuity Between Door Switch Terminal 1 And Switch Body
Courtesy of NISSAN MOTOR CO., U.S.A.

BACK DOOR

Check continuity between back door latch (door ajar switch) 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.

OK or NG

OK: (Front and rear doors) Switch circuit is OK.

OK: (Back door) GO TO 4.

NG: Replace door switch.

Fig 4: Checking Continuity Between Back Door Latch Connector Terminals 7 And 8
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch (door ajar switch) connector D511 terminal 8 and ground.

8 - Ground : Continuity should exist.

OK or NG

OK: Back door switch circuit is OK.

NG: Repair or replace harness.

Fig 5: Checking Continuity Between Back Door Latch Connector Terminal 8 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.