Combination Switch Inspection

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM CHECK

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

DIAGNOSIS PROCEDURE

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	-	LIGHT SW 1ST
INT VOLUME 2	RR WIPER ON	-	FR FOG	-

<<: Check the system to which malfunctioning switch belongs, and 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 carry 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 the 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 Diagnosis Function Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II

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

Example: When the 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
1. Other switches in malfunctioning system operate normally.>>Replace lighting switch or wiper switch.
2. Other switches in malfunctioning system do not operate normally.>>GO TO 3.
HARNESS INSPECTION
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch connectors.
3. Check continuity between BCM harness connector of the suspect system and the corresponding combination switch connector terminals.
  
  Fig 2: Continuity Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Continuity Between BCM Harness Connector And Corresponding Combination Switch Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check for continuity between each terminal of BCM harness connector in suspect malfunctioning system and ground.
  
  Fig 4: Continuity Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking Continuity Between Terminal Of BCM Harness Connector And 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 into ON.
2. Set wiper dial position 4.
3. Connect BCM and combination switch connectors, and check BCM output terminal voltage waveform of suspect malfunctioning system.
  
  Fig 6: Combination Switch Diagnosis Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 7: Checking Voltage Waveform Between Combination Switch Connector Terminals And Ground
  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 8: Combination Switch Inspection Table
Courtesy of NISSAN MOTOR CO., U.S.A.
1. : INSPECTION END