Combination Switch Inspection

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

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

With CONSULT

1. Connect CONSULT, 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

   Operate combination switch (lighting and turn signal 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 combination switch (lighting and turn signal switch) or wiper switch.

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

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.

   Suspect system	A			B		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

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

   Courtesy of NISSAN NORTH AMERICA, INC.
4. Check for continuity between the BCM harness connector in suspect system and ground.

   Suspect system	BCM			Ground	Continuity
   	Connector	Terminal
   1	M18	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 2: Checking Continuity Between BCM Harness Connector In Suspect System & Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   OK or NG 

   OK: GO TO 4.

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

1. Connect BCM and combination switch (lighting and turn signal switch) connectors.
2. Turn ignition switch ON.
3. Turn combination switch (lighting and turn signal switch) and wiper switch to OFF position.
4. Set wiper dial to position 4.
5. Check BCM output terminal voltage waveform of suspect system.
   Fig 3: Checking BCM Output Terminal Waveform

   Courtesy of NISSAN NORTH AMERICA, INC.

Suspect system	Terminal			Reference value
	(+)		(-)
	Combination switch connector	Terminal
1	M28	1	Ground
2		2
3		3
4		4
5		5

OK or NG 

OK: Open circuit in combination switch (lighting and turn signal switch), GO TO 5.

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

Referring to table below, perform combination switch inspection.

Inspection end.