Combination Switch Inspection

COMBINATION SWITCH


Combination Switch Inspection

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





- Check the system to which the switch belongs, and GO TO 2.
2.SYSTEM CHECK
With CONSULT-III
1. Connect CONSULT-III, and select "COMB SW" on BCM "SELECT TEST ITEM" screen.
2. Select "DATA MONITOR".
3. Select "START", and confirm that other switches in the system operate normally.
Example: When turn signal LH is inoperative, confirm that PASSING, HEAD LAMP 2 or FRONT FOG (if equipped) turn ON-OFF normally.
Without CONSULT-III
Operate combination switch, and confirm that other switches in the system operate normally.
Example: When a turn signal switch is inoperative, confirm that FRONT WIPER LO or FRONT WIPER INT turn ON-OFF normally.
Check results
Other switches in the system operate normally.-Replace lighting switch or wiper switch.
Other switches in the system do not operate normally.-GO TO 3.
3.HARNESS INSPECTION
1. Turn ignition switch OFF.
2. Disconnect BCM connector and combination switch connector.
3. Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch harness connector.












4. Check for continuity between the BCM harness connector in suspect system and ground.











OK or NG
OK - GO TO 4.
NG - Check harness between BCM and combination switch for open or short circuit.
4.CHECK BCM OUTPUT TERMINAL
1. Connect BCM and combination switch connectors.
2. Turn ignition switch ON.
3. Turn lighting switch and wiper switch to OFF position.
4. Set wiper dial to position 4.





5. Check BCM output terminal voltage waveform of suspect system.







OK or NG
OK - Open circuit in combination switch, GO TO 5.
NG - Replace BCM. Service and Repair.
5.COMBINATION SWITCH INSPECTION
Referring to table below, perform combination switch inspection.






- Inspection end.