Door Switch Check

CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT-III

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

When any doors are open:
DOOR SW-DR : ON

DOOR SW-AS : ON

DOOR SW-RL : ON

DOOR SW-RR : ON

When any doors are closed:

DOOR SW-DR : OFF

DOOR SW-AS : OFF

DOOR SW-RL : OFF

DOOR SW-RR : OFF

Without CONSULT-III

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

VOLTAGE AND CONTINUITY SPECIFICATIONS

Connector	Item	Terminals		Condition	Voltage (V) (Approx.)
Connector	Item	(+)	(-)	Condition	Voltage (V) (Approx.)
M19	Front door switch LH	47	Ground	Open → Closed	0 ↓ Battery voltage
M19	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, 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 B21 (Front LH), B28 (Front RH), B26 (Rear LH), B41 (Rear RH) terminal 2 and BCM connector M18, M19 terminals 12, 13, 47 and 48.
  2 - 47 : Continuity should exist.
  
  2 - 12 : Continuity should exist.
  
  2 - 48 : Continuity should exist.
  
  2 - 13 : Continuity should exist.
4. Check continuity between door switch connector B21 (Front LH), B28 (Front RH), B26 (Rear LH), B41 (Rear RH) terminal 2 and ground.
  2 - Ground : Continuity should not exist.
  
  Fig 2: Checking Continuity Between Connector B21 (Front LH), B28 (Front Rh), B26 (Rear LH), B41 (Rear Rh) Terminal 2 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

Check continuity between door switch terminals.

VOLTAGE AND CONTINUITY SPECIFICATIONS

Door switch (front or rear)	Terminals	Condition	Continuity
	2 - Ground	Pressed	No
	2 - Ground	Released	Yes

Fig 3: Checking Continuity Between Door Switch Terminals

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

OK or NG

OK: GO TO 4.

NG: Replace door switch.

CHECK BCM OUTPUT VOLTAGE
1. Reconnect BCM connectors.
2. Check voltage between BCM connector M18, M19 terminals 12, 13, 47, 48 and ground.
  12 - Ground : Battery voltage
  
  13 - Ground : Battery voltage
  
  47 - Ground : Battery voltage
  
  48 - Ground : Battery voltage
  
  OK or NG
  
  OK: Door switch circuit is OK.
  
  NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
  
  Fig 4: Checking Voltage Between BCM Connector M18, M19 Terminals 12, 13, 47, 48 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.