Combination Switch Inspection

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM CHECK

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

COMBINATION SWITCH INSPECTION - MALFUNCTIONING SWITCH

System 1	System 2	System 3	System 4	System 5
-	FR WASHER	FR WIPER LO	TURN LH TURN LH	TURN LH TURN RH
FR WIPER HI	-	FR WIPER INT	PASSING HEAD	LAMP 1
INT VOLUME 1	RR WASHERv	-	HEAD LAMP 2	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: Identifying "DATA MONITOR" Display
  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: BCM Harness Connector Of Suspect System And Corresponding Combination Switch Connector Terminals Continuity Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking For Continuity Between BCM Harness Connector Of The Suspect System And The Corresponding Combination Switch Connector Terminals
  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: Terminal Of BCM Harness Connector In Suspect Malfunctioning System And Ground Continuity Specification Chart
  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.
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: BCM And Combination Switch Connectors And BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Open circuit in combination switch, GO TO 5.
- NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
Fig 6: Checking BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System
Courtesy of NISSAN MOTOR CO., U.S.A.
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.
- : Inspection End.