Pre-Check

PRE-CHECK

1. DIAGNOSIS CHECK

a. Starting Diagnosis Mode (All elements are lighting in the SW check mode).




1. Turn off the audio system and turn the IG switch to ACC. While pressing the preset switches "1" and "6" at the same time, press "DISC" 3 times.
2. Reference:
- When the system enters the Diagnosis Mode, a "beep" tone is emitted 3 times and all the elements are lighting in the SW check mode.
- It takes about 40 seconds to complete the check.
- Turn all the elements in the LCD on.
- When pressing the switch, confirm a beep tone is emitted.
- Press the "SEEK TRACK UP" button to enter the "Service Check Screen".

b. Service Check Screen.




1. Reference:
In the service check mode, the system check and the diagnosis memory check are performed, and the check results are displayed in ascending order of the device codes (physical address.)

c. Finishing Diagnosis Mode.
1. Press "DISC" for 2 seconds or more, or turn the IG switch OFF.

d. Service Check Mode Result Display (for checking the current and the past system conditions).




1. Press the "SEEK TRACK" switch to see the check result of each device.







2. Check Result Display.
3. To perform the Service Check again, press the preset switch "1".

e. Detailed information Mode (when displaying the troubled device's DTC)
1. With "CHEC" or "ECHN" being displayed, press the preset switch "2" to go to the detailed information mode.




2. Press the "SEEK TRACK" switch to display "System Check Result (SYS)" and "Diagnosis Memory Response (CODE)".




3. Displayed Items in Detailed Information Mode
4. Check the trouble area referring to the DTC list.
5. To return to the service check mode, press the preset switch "3".

f. Clearing Individual DTC Memory (when clearing the memory of the DTC detected in the past individually)
1. Press the preset switch "5" for 2 seconds or more while the "ECHN" is displayed in the service check mode or during the detailed information mode.

HINT:
- Beep sound is emitted once when the DTC memory is completely cleared.
- When the DTC memory is cleared, only the component code (physical address) is displayed for the target component.
- To check DTCs, press the preset switch "1" and perform the service check again.

g. Clearance of all the DTC memory (when clearing all the memory of the DTCs detected in the past)
1. Start the diagnosis mode after repairing the trouble area.
2. Press the preset switch "5" for 2 seconds or more. ("CLR" is displayed at this time.)

HINT:
- Beep sound is emitted once when the DTCs memory is completely cleared.
- When the DTCs memory for all the device is cleared, only the component codes (physical address) are displayed.

3. Press the preset switch "1" to perform the service check again, and check that no DTCs are displayed for all the component codes (physical address).

2. IDENTIFICATION OF NOISE SOURCE




a. Identify the condition under which the noise occurs, and check the noise filter on the related part.

b. Reference:
- Make sure first that there is no noise from outside. Failing to do so makes the noise source detection difficult and leads to misunderstanding.
- The noise should be removed in descending order of loudness.
- Setting the radio untuned makes noise noticeable, making the recognition of the phenomenon easier.