Combination Switch Inspection

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM CHECK

Referring to COMBINATION SWITCH INSPECTION CHART , check to which system the malfunctioning switch belongs.

COMBINATION SWITCH INSPECTION CHART

System 1	System 2	System 3	System 4	System 5
-	FR WASHER	FR WIPER LO	TURN LH	TURN RH
FR WIPER HI	-	FR WIPER INT	PASSING	HEAD LAMP1
INT VOLUME 1	RR WASHER	-	HEAD LAMP2	HI BEAM
RR WIPER INT	INT VOLUME 3	AUTO LIGHT	-	TAIL LAMP
INT VOLUME 2	RR WIPER ON	-	FR FOG	-

GO TO 2.

SYSTEM CHECK
With CONSULT-II

CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Connect CONSULT-II, and select "COMB SW" on "SELECT TEST ITEM" screen.
2. Select "DATA MONITOR".
3. Select "START", and confirm that other switches in malfunctioning system operate normally.
  Example: When auto light switch is malfunctioning, confirm that "FRONT WIPER LOW" and "FRONT WIPER INT" in System 3, to which the auto light switch belongs, turn ON-OFF normally.
Fig 1: CONSULT-II Display - Data Monitor
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

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

Example: When auto light switch is malfunctioning, confirm that "FRONT WIPER LOW" and "FRONT WIPER INT" in System 3, to which the auto light switch belongs, operate normally.

Check results

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

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

HARNESS INSPECTION

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

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

BCM HARNESS CONNECTOR AND CORRESPONDING COMBINATION SWITCH

Suspect system	BCM			Combination switch		Continuity
Suspect system	Connector	Terminal		Connector	Terminal	Continuity
1	M18	Input 1	6	M28	10	Yes
1		Output 1	36		13
2		Input 2	5		15
2		Output 2	35		12
3		Input 3	4		5
3		Output 3	34		16
4		Input 4	3		6
4		Output 4	33		11
5		Input 5	2		7
5		Output 5	32		14

Fig 2: Checking Continuity Between Connector Of Suspect System And Combination Switch Connector Terminals

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

Check for continuity between each terminal of BCM harness connector in suspect malfunctioning system and ground.

BCM HARNESS CONNECTOR AND GROUND

Suspect system	BCM			(-)	Continuity
Suspect system	Connector	Terminal		(-)	Continuity
1	M18	Input 1	6	Ground	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

OK or NG

OK: GO TO 4.

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

BCM OUTPUT TERMINAL INSPECTION

Connect BCM and combination switch connectors.
Turn lighting switch and wiper switch to OFF.
Set wiper dial to position 4.
Turn ignition switch ON, and check combination switch input (BCM output) terminal voltage waveform of suspect malfunctioning system.

CONNECTOR TERMINAL SPECIFICATION

Suspect system	Combination switch
	(+)
	Connector	Terminal
1	M28	Input 1	13
2		Input 2	12
3		Input 3	16
4		Input 4	11
5		Input 5	14

Fig 3: Checking Combination Switch Input (BCM Output) Terminal Voltage Waveform

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

OK or NG

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

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

COMBINATION SWITCH INSPECTION

Referring to table below, perform combination switch inspection.

COMBINATION SWITCH INSPECTION CHART

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.