Combination Switch Inspection

SYSTEM CHECK

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

COMBINATION SWITCH SYSTEM CHECK

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.

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 carries 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 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: Displaying CONSULT-II DATA MONITOR 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.
HARNESS INSPECTION
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 Continuity Between BCM And Combination Switch
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Continuity Between BCM And Combination Switch
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check for continuity between each terminal of BCM harness connector in suspect malfunctioning system and ground.
  
  Fig 4: Checking Continuity Between BCM Harness Connector & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 4.
2. NG: Check harness between BCM and combination switch for open or short circuit.
BCM OUTPUT TERMINAL INSPECTION
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 5: Checking BCM Output Terminal Voltage Waveform
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking BCM Output Terminal Voltage Waveform
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Open circuit in combination switch, GO TO 5.
2. NG: Replace BCM. refer to REMOVAL AND INSTALLATION OF BCM .
COMBINATION SWITCH INSPECTION
Referring to table below, perform combination switch inspection.

Fig 7: Combination Switch Inspection Chart
Courtesy of NISSAN MOTOR CO., U.S.A.
1. INSPECTION END.