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 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 ITEM CONDITION

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

Check voltage between BCM connector and ground.

ITEM TERMINAL CONDITION

Item	Connector	Terminals (Wire color)		Condition	Voltage (V) (Approx.)
Item	Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
Front RH	M19	12 (R/L)	Ground	OPEN	0
Front RH	M19	12 (R/L)		CLOSE	Battery voltage
Front LH	M20	47 (SB)		OPEN	0
Front LH	M20	47 (SB)		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 (LH).
  Front LH
  
  2 (SB) - 47 (SB): Continuity should exist.
  
  Front RH
  
  2 (R/L) - 12 (R/L): Continuity should exist.
4. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 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.
Fig 3: Checking Continuity Between Front Door Switch Connector And BCM Connector Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK DOOR SWITCH

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

TERMINAL CONTINUITY SPECIFICATION

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.
NG: Replace malfunctioning front door switch.

Fig 4: Checking Continuity Between Each Front Door Switch Terminal And Body Ground

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

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Door Switch Check

Use the Manual With the Right Hardware

When to See a Mechanic

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