Combination Switch Inspection

1. Referring to table below, check to which system the malfunctioning switch belongs.
   SYSTEM CHECK TABLE
   
   

   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.

With CONSULT-II

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 Screen - 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.

1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch connectors.
3. Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch connector terminals.
   Fig 2: Identifying Continuity Between BCM And Combination Switch Connector Terminals

   Courtesy of NISSAN MOTOR CO., U.S.A.
   BCM - COMBINATION SWITCH - CONTINUITY TABLE
   
   

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

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

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

OK or NG 

OK: GO TO 4.

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

1. Turn lighting switch and wiper switch to OFF.
2. Set wiper dial to position 4.
3. Connect BCM and combination switch connectors.
4. Turn ignition switch ON, and check combination switch input (BCM output) terminal voltage waveform of suspect malfunctioning system.
   Fig 3: Identifying Combination Switch Input Voltage Signal

   Courtesy of NISSAN MOTOR CO., U.S.A.
   COMBINATION SWITCH - WAVEFORM TABLE
   
   

   Suspect system	Combination switch
   	(+)
   	Connector	Terminal
   1	M28	Input 1	1
   2		Input 2	2
   3		Input 3	3
   4		Input 4	4
   5		Input 5	5

OK or NG 

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

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

Referring to table below, perform combination switch inspection.

: Inspection End.