Combination Switch Inspection

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

• : 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 Screen

   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. Disconnect BCM and combination switch connectors.
2. Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch connector terminals.
   Fig 2: Checking BCM Harness Connector Of Suspect System And Corresponding Combination Switch Connector Terminals Continuity

   Courtesy of NISSAN MOTOR CO., U.S.A.
   BCM HARNESS CONNECTOR OF SUSPECT SYSTEM AND CORRESPONDING COMBINATION SWITCH CONNECTOR TERMINALS CONTINUITY
   
   

   Suspect system	Terminals					Continuity
   	BCM			Combination switch
   	Connector	Terminal (Wire color)		Connector	Terminal (Wire color)
   1	M18	Input 1	6 (V)	M28	6 (V)	Yes
   		Output 1	36 (R/W)		1 (R/W)
   2		Input 2	5 (G/B)		7 (G/B)
   		Output 2	35 (O/B)		2 (O/B)
   3		Input 3	4 (Y)		10 (Y)
   		Output 3	34 (L)		3 (L)
   4		Input 4	3 (G/Y)		9 (G/Y)
   		Output 4	33 (R/Y)		4 (R/Y)
   5		Input 5	2 (SB)		8 (SB)
   		Output 5	32 (R/G)		5 (R/G)

3. Check for continuity between each terminal of BCM harness connector in suspect malfunctioning system and ground.
   BCM HARNESS CONNECTOR IN SUSPECT MALFUNCTIONING SYSTEM AND GROUND CONTINUITY
   
   

   Suspect system	Terminals				Continuity
   	BCM
   	Connector	Terminal (Wire color)
   1	M18	Input 1	6 (V)	Ground	No
   		Output 1	36 (R/W)
   2		Input 2	5 (G/B)
   		Output 2	35 (O/B)
   3		Input 3	4 (Y)
   		Output 3	34 (L)
   4		Input 4	3 (G/Y)
   		Output 4	33 (R/Y)
   5		Input 5	2 (SB)
   		Output 5	32 (R/G)

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, and check BCM output terminal voltage waveform of suspect malfunctioning system.
   Fig 3: Inspecting BCM Output Terminal

   Courtesy of NISSAN MOTOR CO., U.S.A.
   BCM OUTPUT TERMINAL INSPECTION
   
   

   Suspect system	Terminals
   	Combination switch (+)
   	Connector	Terminal (Wire color)
   1	M28	Output 1	1 (R/W)
   2		Output 2	2 (O/B)
   3		Output 3	3 (L)
   4		Output 4	4 (R/Y)
   5		Output 5	5 (R/G)

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.