Inspection Procedure 2: The USB adapter data cannot be replayed. <Vehicles with radio and CD player or CD changer>


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 radio and CD player or CD changer may be defective.
  • The hands free-ECU may be defective.
  • The USB adapter may be defective.
  • The USB cable may be defective.
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the radio and CD player or CD changer operation.
Check if the radio and CD player or CD changer work normally and the sound is output.

Q. Is the check result normal?
Go to Step 2.
Troubleshoot the radio and CD player or CD changer (Refer to ).

STEP 2. Check the diagnosis mode
Check if the hands free-ECU can be switched to the diagnosis mode. (Refer to .)

Q. Is the check result normal?
Go to Step 3.
Perform Inspection Procedure 5 "DIAGNOSIS MODE cannot be made an entry." (Refer to .)

STEP 3. Check the USB adapter.
Check if the USB adapter works normally. (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-211 radio and CD player or CD changer 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 No.22, 8 and D-211 radio and CD player or CD changer connector terminal No. 3, 12.

  • 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 radio and CD player or CD changer.