Combination Switch Inspection

1. Referring to COMBINATION SWITCH INSPECTION SYSTEM CHECK  , check which system malfunctioning switch belongs to.
   COMBINATION SWITCH INSPECTION 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	.....	LIGHT SW 1ST
   INT VOLUME 2	RR WIPER ON	.....	FR FOG	.....

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

With CONSULT-II

1. Connect CONSULT-II, and select COMB SW on SELECT TEST ITEM screen.
2. Select DATA MONITOR.
   Fig 1: Monitoring Combination Switch Functions With CONSULT-II

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

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:

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.

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: Testing BCM To Combination Switch Continuity

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 3: Associating Systems With BCM & Combination Switch 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: Testing BCM Terminals For Continuity To Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 5: Associating Systems With BCM Terminals

   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.

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: Checking Combination Switch Waveform Pattern On Oscilloscope

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 7: Identifying Combination Switch Terminal Specifications

   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.

Referring to Fig 8 , perform combination switch inspection.

Fig 8: Inspecting Combination Switch

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

1. Inspection end