Base Audio

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

On Board Diagnosis Function


MULTIFUNCTION SWITCH AND PRESET SWITCH SELF-DIAGNOSIS FUNCTION

The ON/OFF operation (continuity) of each switch in the multifunction switch and preset switch can be checked.
Self-diagnosis Mode





- Press the "BACK" switch and the "UP" switch of the 4-direction switches within 10 seconds after turning the ignition switch from
OFF to ACC and hold them for 3 seconds or more. Then the buzzer sounds, all indicators of the preset switch illuminate, and the self-diagnosis mode starts.
- The continuity of each switch at the ON position can be checked by pressing the switch. The buzzer sounds if the switch is normal.
NOTE:
The hazard switch and disk eject switch cannot be checked.
Finishing Self-diagnosis Mode
Self-diagnosis mode is canceled when turning the ignition switch OFF.

ON BOARD DIAGNOSIS ITEM

Description
- The trouble diagnosis function has a self-diagnosis mode for conducting trouble diagnosis automatically and a confirmation/adjustment mode for operating manually.
- Self-diagnosis mode performs the AV control unit diagnosis and the connection diagnosis between each of the units that make up the system, and it indicates the results to the display unit.
- The confirmation/adjustment mode allows the technician to check, modify or adjust the vehicle signals and set values, as well as to monitor the system error records and system communication status. The checking, modifying or adjusting generally require human intervention and judgment (the system cannot make judgment automatically).
On Board Diagnosis Item






METHOD OF STARTING

1.Start the engine.
2.Turn the audio system OFF.





3.While pressing the "SETTING" button, turn the volume control dial clockwise or counterclockwise for 40 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.





4.The trouble diagnosis initial screen is displayed, and then the items of "Self Diagnosis" and "Confirmation/Adjustment" can be selected.

SELF-DIAGNOSIS MODE

1.Start the self-diagnosis function and select "Self Diagnosis".
-Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts.
-The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trouble diagnosis.





2.Diagnosis results are displayed after the self-diagnosis is completed. The unit names and the connection lines are color-coded according to the diagnostic results.





NOTE:
Control unit (AV control unit) is displayed in red.
- Replace AV control unit if "Self-Diagnosis did not run because of a control unit malfunction" is indicated.
The symptom is AV control unit internal error. Base Audio.
- If multiple errors occur at the same time for a single unit, the screen switch colors are determined according to the following order of priority: red > gray.





-The comments of the self-diagnosis results can be viewed with a component in the diagnosis result screen.
Detection Range of Self-diagnosis Mode
- The self-diagnosis mode allows the technician to diagnose the connection in the communication line between AV control unit and each unit and the internal operation of the AV control unit.
- Because the start condition of diagnosis function is a switch operation, the on board diagnosis function cannot be started up if any malfunction is detected in the communication circuit between AV control unit and multifunction switch.

SELF-DIAGNOSIS RESULTS

Check the applicable display at the following table, and then repair the malfunctioning parts.
Only Unit Part Is Displayed In Red.





A Connecting Cable Between Units Is Displayed In Yellow.






CONFIRMATION/ADJUSTMENT MODE

1.Start the diagnosis function and select "Confirmation/Adjustment". The confirmation/adjustment mode indicates where each item can be checked or adjusted.





2.Select each switch on the "Confirmation/Adjustment Mode"
screen to display the relevant trouble diagnosis screen. Press the "BACK" switch to return to the initial Confirmation/Adjustment Mode screen.
Display Diagnosis





Vehicle Signals





A comparison check can be made of each actual vehicle signal and the signals recognized by the system.






Speaker Test





Select "Speaker Test" to display the Speaker Diagnosis screen.
Press "Start" to generate a test tone in a speaker. Press "Start" again to generate a test tone in the next speaker. Press "End" to stop the test tones.
Climate Control
Refer to "HEATER & AIR CONDITIONING CONTROL SYSTEM" for details.
Error History
The self-diagnosis results are judged depending on whether any error occurs from when "Self-diagnosis" is selected until the self-diagnosis results are displayed.
However, the diagnosis results are judged normal if an error has occurred before the ignition switch is turned
ON and then no error has occurred until the self-diagnosis start. Check the "Error Record" to detect any error that may have occurred before the self-diagnosis start because of this situation.
The frequency of occurrence is displayed in a count up manner. The actual count up method differs depending on the error item.
- The counter resets to 0 if an error occurs when ignition switch is turned ON. The counter increases by 1 if the condition is normal at a next ignition ON cycle.
- The counter upper limit is 39. Any counts exceeding 39 are ignored." The counter can be reset (no error record display) with the "Delete log" switch or CONSULT-III.
- The counter increases by 1 if an error occurs when ignition switch is ON. The counter will not decrease even if the condition is normal at the next ignition ON cycle.
- The counter upper limit is 50. Any counts exceeding 50 are ignored. " The counter can be reset (no error record display) with the "Delete log" switch or CONSULT-III.










Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed simultaneously, the detection of the cause can be performed by the combination of display items






Camera Cont.





The two functions of "Correct Draw Line of Rear view Cam", "Confirm Configuration" are available.





- Use this mode to adjust the guide line display position of the rear view monitor if necessary after removing the rear view monitor camera.

CAUTION:
After the adjustment, never perform other operations for one minute.





- Configuration stored in the AV control unit can be checked.
Vehicle CAN Diagnosis





- CAN communication status and error counter is displayed.
- The error counter displays "OK" if any malfunction was not detected in the past and displays "0" if a malfunction is detected. It increases by 1 if the condition is normal at the next ignition switch
ON cycle. The upper limit of the counter is 39.
- The error counter is erased if "Reset" is pressed.





NOTE:
"???" indicates UNKWN.
AV COMM Diagnosis





- Displays the communication status between AV control unit (master unit) and each unit.
- The error counter displays "OK" if any malfunction was not detected in the past and displays "0" if a malfunction is detected. It increases by 1 if the condition is normal at the next ignition switch
ON cycle. The upper limit of the counter is 39.
- The error counter is erased if "Reset" is pressed.





NOTE:
"???" indicates UNKWN.
Delete Unit Connection Log





Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been removed.)
Initialize Settings





"User Data Initialization" and "Accessory Number Initialization" are possible.

CAUTION:
- Never perform Accessory Number Initialization except when configuration is unsuccessful.
- Accessory Number Initialization requires configuration. For details, Base Audio.