Front Door Switch LH Signal Inspection

WARNING: This page is about a different car, the 2007 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BCM INPUT SIGNAL

With CONSULT-III

Select "BCM".
With "DATA MONITOR" of "BUZZER", confirm "DOOR SW-DR" when the driver's door is operated.
"DOOR SW-DR"

When driver's door is opened : ON

When driver's door is closed : OFF

Without CONSULT-III

Check voltage between BCM harness connector and ground.

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Terminals			Condition	Voltage (Approx.)
(+)		(-)
BCM connector	Terminal	(-)
M19	47	Ground	Driver's door is opened	0
M19	47	Ground	Driver's door is closed	Battery voltage

OK or NG

OK: Front door switch LH signal is OK. Return to "SYMPTOM CHART ".

NG: GO TO 2.

Fig 1: Checking Voltage Between BCM Harness Connector And Ground

CHECK FRONT DOOR SWITCH LH CIRCUIT

Turn ignition switch OFF.
Disconnect BCM connector and front door switch LH connector.

Check continuity between BCM harness connector (A) and front door switch LH harness connector (B).

CONNECTOR TERMINAL CONTINUITY SPECIFICATION

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M19	47	B21	2	Yes

Check continuity between BCM harness connector (A) and ground.

CONNECTOR TERMINAL CONTINUITY SPECIFICATION

A		Ground	Continuity
Connector	Terminal
M19	47		No

OK or NG

OK: GO TO 3.

NG: Repair harness or connector.

Fig 2: Checking Continuity Between BCM Harness Connector And Front Door Switch LH Harness Connector

CHECK FRONT DOOR SWITCH LH
Check front door switch LH. Refer to "FRONT DOOR SWITCH LH ".

OK or NG

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

NG: Replace front door switch LH.