Inspection Procedure 2: The USB adapter data cannot be replayed. <Vehicles with MMCS>


caution Before replacing the hands free-ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM



note Before troubleshooting, check that the music file (the customer tried to replay) can be replayed.

PROBABLE CAUSES



  • The multivision display may be defective.
  • The hands free-ECU 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 PROCEDURE

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?
Go to Step 2.
Troubleshoot the MMCS (Refer to ).

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?
Go to Step 3.
Perform Inspection Procedure 6: "DIAGNOSIS MODE cannot be made an entry. Mobile Phone item is not displayed on the INFOR screen of MMCS." <Vehicles with MMCS> (Refer to .)

STEP 3. Check the USB adapter.
Check that the continuity exists between the front side terminals of the USB adapter and the rear side terminals of the USB adapter. (Refer to )

Q. Is the check result normal?
Go to step 4.
Replace the USB adapter.

STEP 4. Check the USB cable.
Check that the USB cable is connected to the USB adapter or hands free-ECU normally. Or check the USB cable for damage such as bend.

Q. Is the check result normal?
Go to step 5.
Replace or repair the USB cable.

STEP 5. Connector check: D-143 hands free-ECU connector, D-258 multivision display connector

Q. Is the check result normal?
Go to step 6.
Repair the defective connector.

STEP 6. Check the wiring harness between D-143 hands free-ECU connector terminal 22, 8 and D-258 multivision display connector terminal 23, 24.

  • Check the signal lines for open circuit and short circuit.
note Prior to the wiring harness inspection, check intermediate connector D-141, and repair if necessary.

Q. Is the check result normal?
Go to step 7.
Repair the wiring harness.

STEP 7. Replace the hands free-ECU temporarily, and check the trouble symptom.
Replace the hands free-ECU temporarily, and check that the sound is output from the speaker.

Q. Is the check result normal?
Replace the hands free-ECU.
Replace the multivision display.