Vehicles With MMCS

Inspection Procedure 2: The USB adapter data cannot be replayed. [Vehicles with MMCS]

CAUTION:
Before replacing the hands free module, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.










TECHNICAL DESCRIPTION (COMMENT)

If the sound replay is impossible with the USB/i Pod mode, the USB adapter, USB cable, hands free module, or multivision display may be defective, or a communication error between the multivision display and hands free module may have occurred.
NOTE:
Before troubleshooting, check that the music file (the customer tried to replay) can be replayed.

TROUBLESHOOTING HINTS

- The multivision display may be defective.
- The hands free module may be defective.
- The USB adapter may be defective.
- The USB cable may be defective.
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tools:

- MB991223: Harness Set
- MB992006: Extra Fine Probe

STEP 1. Check the multivision display operation.

Check if the multivision display work normally and the sound is output.

Q. Is the check result normal?

YES Go to Step 2.
NO Troubleshoot the MMCS (Refer to Symptom Chart.).
STEP 2. Check the multivision display operation.

Display the INFOR screen, and check that the "Mobile Phone" item is displayed.

Q. Is the check result normal?

YES Go to Step 3.
NO Perform Inspection Procedure 6: "DIAGNOSIS MODE cannot be made an entry. Mobile Phone item is not displayed on the INFOR screen of MMCS." (Refer to Inspection Procedure 6 [Vehicles With MMCS].)
STEP 3. Check the USB adapter.

Check that the continuity exists between the front side terminals of USB adapter and rear side terminals of USB adapter. (Refer to Hands Free Module)

Q. Is the check result normal?

YES Go to Step 4.
NO Replace the USB adapter.
STEP 4. Check the USB cable.

Check that the USB cable is connected to the USB adapter or hands free module normally.
Or check the USB cable for damage such as bend.

Q. Is the check result normal?

YES Go to Step 5.
NO Replace or repair the USB cable.
STEP 5. Check hands free module connector C-11 and multivision display C-10 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Are hands free module connector C-11 and multivision display connector C-10 in good condition?

YES Go to Step 6.
NO Repair or replace the damaged component(s). Harness Connector Inspection.
STEP 6. Check the wiring harness between hands free module connector C-11 (terminal 22, 8) and multivision display connector C-10 (terminal 35, 51).

- Check the signal lines for open circuit and short circuit.

NOTE:
Also check intermediate connector C-110 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-110 is damaged, repair or replace the connector as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between hands free module connector C-11 (terminal 22, 8) and multivision display connector C-10 (terminal 35, 51) in good condition?

YES Go to Step 7.
NO The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
STEP 7. Replace the hands free module temporarily, and check the trouble symptom.

Replace the hands free module temporarily, and check that the sound is output from the speaker.

Q. Is the check result normal?

YES Replace the hands free module.
NO Replace the multivision display.