Combination Switch Inspection

COMBINATION SWITCH


Combination Switch Inspection

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





- Check the system to which malfunctioning switch belongs, and then GO TO 2.
2.SYSTEM CHECK
CONSULT-III DATA MONITOR
1. Select COMB SW data monitor item.
2. Confirm that other switches in malfunctioning system operate normally.
Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "TAIL LAMP SW" in System 5, to which the HI BEAM switch belongs, turn ON-OFF normally.
SYSTEM CHECK
Operating combination switch, and confirm that other switches in malfunctioning system operate normally.
Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "TAIL
LAMP SW" in System 5, to which HI BEAM switch belongs, turn ON-OFF 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.
3.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch connectors.
3. Check for continuity between BCM harness connector (A) of the suspect system and the corresponding combination switch connector (B).










4. Check for continuity between each of BCM harness connector in suspect malfunctioning 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 into OFF.
4. Set wiper dial position 4.





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





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





- INSPECTION END