Door Switch Check

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCH INPUT SIGNAL

With CONSULT-II

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

MONITOR ITEM

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: Display Data Monitor

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

Without CONSULT-II

Turn ignition switch OFF.
Check voltage between BCM connector and ground.

VOLTAGE SPECIFICATION

Item	Connector	Terminals (Wire color)		Condition	Voltage (V) (Approx.)
Item	Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
RH	M18	12 (R/L)	Ground	Door switch OPEN	0
RH	M18	12 (R/L)		Door switch CLOSE	Battery voltage
LH	M19	47 (SB)		Door switch OPEN	0
LH	M19	47 (SB)		Door switch CLOSE	Battery voltage

OK or NG

OK: 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 DOOR SWITCH CIRCUIT
1. Disconnect front door switches and BCM.
2. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 (SB or R/L) and BCM connectors M18, M19 terminals 12 (R/L), 47 (SB).
  Front door LH
  
  2 (SB) - 47 (SB): Continuity should exist.
  
  Front door RH
  
  2 (R/L) - 12 (R/L): Continuity should exist.
3. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 (SB or R/L) and ground.
  2 (SB or R/L) - Ground: Continuity should not exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace harness between BCM and sunroof motor assembly.
Fig 3: Checking Continuity Between Front Door Switch Connector
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK DOOR SWITCH

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

CONTINUITY SPECIFICATION

Terminal		Condition	Continuity
2	Body ground part of door switch	Door switch pushed	No
2	Body ground part of door switch	Door switch released	Yes

OK or NG

OK: GO TO 4.
NG: Replace malfunctioning door switch.

Fig 4: Checking Continuity Between Each Door Switch Terminal

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

CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector M18 terminal 12 (R/L), M19 terminal 47 (SB) and ground.
  12 (R/L) - Ground: Battery voltage
  
  47 (SB) - Ground: Battery voltage
OK or NG
1. OK: Check the condition of the harness and the connector.
2. NG: Replace BCM.

Fig 5: Checking Voltage Between BCM Connector

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