Reading and Clearing Diagnostic Trouble Codes

Audio Unit Self-Diagnosis Function (Premium System)
It can check ON/OFF operation of each switch in the audio unit and diagnose the input signals from the steering switch.

STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.




2. Press and hold the "CLOCK" switch and turn the volume control dial clockwise or counterclockwise for 30 clicks or more.
Then the self-diagnosis operates. A single beep indicates self-diagnosis mode is active.

3. Initially, all display segments will be illuminated.
4. Press each switch. When each switch is pressed, its name and communication code will be displayed.

NOTE: CD player LOAD and EJECT buttons are not included in this test and will not change the display when pressed.

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

DIAGNOSIS FUNCTION
- It can check for continuity of the switches by sounding a beep when each audio unit switch and steering switch is pressed.
- It can check for continuity of harness between audio unit and steering switch.