Combination Switch Inspection

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM CHECK

Referring to table below, check which system malfunctioning switch belongs to.

SYSTEM MALFUNCTIONING REFERENCE

System 1	System 2	System 3	System 4	System 5
-	FRONT WASHER	FRONT WIPER LO	TURN LH	TURN RH
FRONT WIPER HI	-	FRONT WIPER INT	PASSING	HEAD LAMP 1
INT VOLUME 1	-	-	HEAD LAMP 2	HI BEAM
-	INT VOLUME 3	-	-	LIGHT SW 1ST
INT VOLUME 2	-	-	FRONT FOG	-

Check the system to which the switch belongs, and GO TO 2.

SYSTEM CHECK
With CONSULT-III
1. Connect CONSULT-III, and select "COMB SW" on BCM "SELECT TEST ITEM" screen.
2. Select "DATA MONITOR".
3. Select "START", and confirm that other switches in the system operate normally.
Example: When turn signal LH is inoperative, confirm that PASSING, HEAD LAMP 2 or FRONT FOG (if equipped) turn ON-OFF normally.

Without CONSULT-III

Operate combination switch, and confirm that other switches in the system operate normally.

Example: When a turn signal switch is inoperative, confirm that FRONT WIPER LO or FRONT WIPER INT turn ON-OFF normally.

Check results

Other switches in the system operate normally.:Replace lighting switch or wiper switch.

Other switches in the system do not operate normally.:GO TO 3.

HARNESS INSPECTION

Turn ignition switch OFF.
Disconnect BCM connector and combination switch connector.

Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch harness connector.

TERMINALS CONTINUITY REFERENCE

Suspect system	A			B		Continuity
Suspect system	Connector	Terminal		Connector	Terminal	Continuity
1	M18	Input 1	6	M28	6	Yes
1		Output 1	36		1
2		Input 2	5		7
2		Output 2	35		2
3		Input 3	4		10
3		Output 3	34		3
4		Input 4	3		9
4		Output 4	33		4
5		Input 5	2		8
5		Output 5	32		5

Fig 1: Checking Continuity Between BCM Connector Of Suspect System And Corresponding Combination Switch Harness Connector Terminals

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

Check for continuity between the BCM harness connector in suspect system and ground.

TERMINALS CONTINUITY REFERENCE

Suspect system	BCM			Continuity
Suspect system				Continuity	Connector	Terminal
1	M18	Input 1	6	No
1		Output 1	36
2		Input 2	5
2		Output 2	35
3		Input 3	4
3		Output 3	34
4		Input 4	3
4		Output 4	33
5		Input 5	2
5		Output 5	32

Fig 2: Checking Continuity Between BCM Connector In Suspect System And Ground

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

OK or NG

OK: GO TO 4.

NG: Check harness between BCM and combination switch for open or short circuit.

CHECK BCM OUTPUT TERMINAL

Connect BCM and combination switch connectors.
Turn ignition switch ON.
Turn lighting switch and wiper switch to OFF position.
Set wiper dial to position 4.
Check BCM output terminal voltage waveform of suspect system.

Fig 3: Checking BCM Output Terminal Voltage Waveform Of Suspect System

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

TERMINALS VOLTAGE REFERENCE

Suspect system	Terminal			Reference value
	(+)		(-)
	Combination switch connector	Terminal	(-)
1	M28	1	Ground	Courtesy of NISSAN MOTOR CO., U.S.A. 1.2V
2		2
3		3
4		4
5		5		Courtesy of NISSAN MOTOR CO., U.S.A. 1.2V

OK or NG

OK: Open circuit in combination switch, GO TO 5.

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

COMBINATION SWITCH INSPECTION

Referring to table below, perform combination switch inspection.

COMBINATION SWITCH REFERENCE

Procedure
1	2		3	4		5	6		7
Replace lighting switch	Confirm check results	OK	INSPECTION END	Confirm check results	OK	INSPECTION END	Confirm check results	OK	INSPECTION END
Replace lighting switch	Confirm check results	NG	Replace wiper switch	Confirm check results	NG	Replace switch base	Confirm check results	NG	Confirm symptom again

Inspection end.