A/C and AV Switch Self-Diagnosis Function

DESCRIPTION
It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the steering switch (audio).




STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the witches "MUTE/II" and "PREV" simultaneously for 3 seconds.

Then the self-diagnosis operates.

EXITING THE SELF-DIAGNOSIS MODE
- Turn ignition switch OFF. Then the self-diagnosis ends.

DIAGNOSIS FUNCTION
- It can illuminate all the indicators (LED) in the A/C and AV switch.
- It can check for continuity of the switches by sounding the buzzer when the A/C and AV switch is pressed.
- It can check for continuity of harness between A/C and AV switch and steering switch (audio).