Combination Switch Inspection

1. SYSTEM CHECK 

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

   SYSTEM CHECK REFERENCE 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	-	-	HEAD LAMP2	HI BEAM
   -	INT VOLUME 3	AUTO LIGHT	-	LIGHT SW 1ST
   INT VOLUME 2	-	-	FR FOG	-

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

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 carry 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 the 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

   Operating combination switch, and confirm that other switches in malfunctioning system operate normally. Example: When the auto light switch is malfunctioning, confirm that FRONT WIPER LOW and FRONT WIPER INT in system 3, to which 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.

3. HARNESS INSPECTION 
   1. Turn ignition switch OFF.
   2. Disconnect BCM connector and combination switch connector.
   3. Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch harness connector.
      TERMINALS CONTINUITY CHART
      
      

      Suspect system	Terminal					Continuity
      	BCM			Combination switch
      		Connector		Terminal	Connector
      1	M1	Input 1	6	M29	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

      Fig 2: Identifying Continuity Between BCM Connector Of Suspect System And Corresponding Combination Switch Connector

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. Check for continuity between BCM harness connector in suspect malfunctioning system and ground.
      TERMINALS CONTINUITY CHART
      
      

      Suspect system	Terminal				Continuity
      	BCM			Ground
      	Connector	Terminal
      1	M1	Input 1	6		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

      Fig 3: Identifying Continuity Between BCM Connector In Suspect Malfunctioning 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.
4. CHECK BCM OUTPUT TERMINAL 
   1. Turn lighting switch and wiper switch OFF position.
   2. Set wiper dial position 4.
   3. Connect BCM connector and combination switch connector.
   4. Turn ignition switch ON.
   5. Check BCM output terminal voltage waveform of suspect malfunctioning system.
      Fig 4: Identifying BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System

      Courtesy of NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.
      TERMINALS VOLAGE CHART
      
      

      Suspect system	Terminal			Reference value
      	Combination switch (+)		(-)
      	Connector	Terminal
      1	M29	1	Ground	Courtesy of NISSAN MOTOR CO., U.S.A.
      2		2
      3		3
      4		4
      5		5

   OK or NG 

   • OK: Open circuit in combination switch, GO TO 5.
   • NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
5. COMBINATION SWITCH INSPECTION 

   Referring to table below, perform combination switch inspection.

   COMBINATION SWITCH SPECIFICATION
   
   

   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
   		NG	Replace wiper switch		NG	Replace switch base		NG	Confirm symptom again

: INSPECTION END