Combination Switch Inspection

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

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

CONSULT-III DATA MONITOR

1. Select COMB SW data monitor item.
2. Confirm that other switches in malfunctioning system operate normally.

   Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "TAIL LAMP SW" in System 5, to which the HI BEAM switch belongs, turn ON-OFF normally.

SYSTEM CHECK

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

Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "TAIL LAMP SW" in System 5, to which HI BEAM switch belongs, turn ON-OFF 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 (A) of the suspect system and the corresponding combination switch connector (B).
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   Suspect system	A			B		Continuity
   	Connector	Terminal		Connector	Terminal
   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

4. Check for continuity between each of BCM harness connector in suspect malfunctioning system and ground.
   Fig 1: Checking For Continuity Between BCM Harness Connector Of Suspect System And Corresponding Combination Switch Connector

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

   Suspect system	BCM connector	Terminal		Ground	Continuity
   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

OK or NG 

OK: GO TO 4.

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

Fig 2: Checking Continuity Between BCM Harness Connector In Suspect Malfunctioning System And Ground

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

1. Connect BCM and combination switch connectors.
2. Turn ignition switch ON.
3. Turn lighting switch and wiper switch into OFF.
4. Set wiper dial position 4.
5. Check BCM output terminal voltage waveform of suspect malfunctioning system.
   TERMINALS AND REFERENCE VALUES 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 ".

Fig 3: Checking BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System

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

Referring to table below, perform combination switch inspection.

>> INSPECTION END