5. Multi-Center Display Does Not Display Correct Audio Info

Multi-Center Display Communication Circuit:

Connector C-09, C-21:

CIRCUIT OPERATION
The multi-center display and the radio, tape player, CD player and CD auto changer communicate with each other. The multi-center display shows the information concerning the radio, tape player, CD player and CD auto changer on the screen, based on that communication.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty multi-center display communication circuit.

TROUBLESHOOTING HINTS
- Damaged harness wire or connector.
- Malfunction of the multi-center display.
- Malfunction of the radio, tape player, CD player and CD auto changer.

DIAGNOSIS
Required Special Tool:
MB991223: Harness set

STEP 1. Does the time display function of the multi-center display operate normally?
If no, refer to Symptom Chart.
If yes, go to Step 2.




STEP 2. Check multi-center display connector C-09 and radio, tape player, CD player and CD auto changer connector C-21 for damage.
If the multi-center display connector C-09 and radio, tape player, CD player and CD auto changer connector C-21 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The multi-center display should display the information concerning the audio system correctly.

If the connectors are in good condition, go to Step 3.




STEP 3. Check the harness wires between multi-center display connector C-09 and radio, tape player, CD player and CD auto changer connector C-21.

If the harness wires between multi-center display connector C-09 and radio, tape player, CD player and CD auto changer connector C-21 are damaged, repair them.

The multi-center display should display the information concerning the audio system correctly.

If the harness wires are in good condition, repair or replace the multi-center display or radio, tape player, CD player and CD auto changer.

The multi-center display should display the information concerning the audio system correctly.