Door Switch Check

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

CHECK DOOR SWITCH INPUT SIGNAL

With CONSULT-III

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

DOOR SW-DR" AND "DOOR SW-AS

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

Without CONSULT-III

Check voltage between BCM connector and ground.

BCM CONNECTOR AND GROUND

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

Fig 1: Checking Voltage Between BCM Connector And Ground

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

OK or NG

OK: Door switches are OK.

NG: GO TO 2.

CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front door switches and BCM.
3. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and BCM connector M18, M19 terminals 12,47.
  Front door switch LH
  
  2 - 47: Continuity should exist.
  
  Front door switch 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 2: Checking Continuity Between Front Door Switch LH Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

CHECK DOOR SWITCH

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

DOOR SWITCH

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

Fig 3: Checking Continuity Between Door Switch And Body Ground Part Of Door Switch

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

OK or NG

OK: Further inspection is necessary. Refer to "TROUBLE DIAGNOSIS CHART BY SYMPTOM ".

NG: Replace malfunctioning door switch.