Diagnosis Function
- It can illuminate all the indicators (LED) in the multifunction switch.
- It can check for continuity of the switches by sounding the buzzer when the multifunction switch is pressed.
- It can check for continuity of harness between multifunction switch and rear control switch (audio), or steering switch (audio).
NOTE:
When it check continuity of harness between multifunction switch and rear control switch (audio), rear control cancel switch is OFF position.