Door Switch Check

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FRONT DOOR SWITCH INPUT SIGNAL

With CONSULT-II

Check front door switches ("DOOR SW-DR" and "DOOR SW-AS") in "DATA MONITOR" mode with CONSULT-II.

MONITOR CONDITION CHART

Monitor item	Condition
DOOR SW-DR	OPEN	:ON
DOOR SW-DR	CLOSE	:OFF
DOOR SW-AS	OPEN	:ON
DOOR SW-AS	CLOSE	:OFF

Fig 1: CONSULT-II Display - DOOR SW-DR And DOOR SW-AS

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

Without CONSULT-II

Check voltage between BCM connector and ground.

CONNECTOR TERMINAL WIRE COLOR SPECIFICATION

Item	Connector	Terminals		Condition	Voltage (V) (Approx.)
Item	Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
Front RH	M18	12	Ground	OPEN	0
Front RH	M18	12		CLOSE	Battery voltage
Front LH	M19	47		OPEN	0
Front LH	M19	47		CLOSE	Battery voltage

OK or NG

OK: Front door switch is OK.
NG: GO TO 2.

Fig 2: Checking Voltage Between BCM Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK FRONT DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front door switch LH or RH and BCM.
3. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and BCM connector M19 terminal 47 (LH) or connector M18 terminal 12 (RH).
  Front LH
  
  2 - 47: Continuity should exist.
  
  Front RH
  
  2 - 12: Continuity should exist.
4. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and ground.
  2 - Ground: Continuity should not exist.
  
  Fig 3: Checking Front Door Switch Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.

CHECK DOOR SWITCH

Disconnect front door switch LH or RH.

Check continuity between each front door switch terminal 2 and body ground part of front door switch.

CONNECTOR TERMINAL CONTINUITY CHART

Terminal		Door switch	Continuity
2	Body ground part of front door switch	Pushed	No
2	Body ground part of front door switch	Released	Yes

OK or NG

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
NG: Replace malfunctioning front door switch.

Fig 4: Checking Continuity Between Front Door Switch Terminal 2 And Body Ground
Courtesy of NISSAN MOTOR CO., U.S.A.