Inspection Procedure 4: When the SPEECH switch is pressed, the voice guide is not output.

caution

Before replacing the hands free-ECU or radio and CD player or multivision display, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM

If the voice guide is not sent when the steering wheel voice control switch (SPEECH switch) is pushed, the communication between the radio and CD player or multivision display and the hands free-ECU, or the communication between the radio and CD player or multivision display and the steering wheel remote control switch, the hands free-ECU or the steering wheel remote control switch may have a problem.

PROBABLE CAUSES

The radio and CD player may be defective. <Vehicles with radio and CD player>
The multivision display may be defective. <Vehicles with MMCS>
The hands free-ECU may be defective.
The steering wheel remote control switch may be defective.
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the diagnosis mode.

<Vehicles with radio and CD player>

Check if the hands free-ECU can be switched to the diagnosis mode. (Refer to <Vehicles with 1CD audio> or <Vehicles with display audio>.)

<Vehicles with MMCS>

Display the INFOR screen, and check that the "Mobile Phone" item is displayed. (Refer to .)

Q. Is the check result normal?

Go to Step 2.

Perform Inspection Procedure 5: DIAGNOSIS MODE cannot be made an entry. Mobile Phone item is not displayed. (Refer to

STEP 2. Operation check of the steering wheel remote control switch (audio remote control switch).

Check that the radio and CD player or multivision display can be operated by the steering wheel audio remote control switch.

Q. Is the check result normal?

Go to Step 3.

Troubleshoot the steering wheel remote control switch.

STEP 3. Check the steering wheel remote control switch (SPEECH switch).

Check the continuity of the steering wheel remote control switch (Refer to

Q. Is the check result normal?

Go to Step 4.

Replace the steering wheel remote control switch.

STEP 4. Temporarily replace the hands free-ECU, and check the trouble symptom.

Q. Is the check result normal?

Replace the hands free-ECU.

Replace the radio and CD player or multivision display.