Inspection Procedure 5: DIAGNOSIS MODE cannot be made an entry. Mobile Phone item is not displayed on the MENU screen of audio. <Vehicles with radio and CD player>

caution

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

COMMENTS ON TROUBLE SYMPTOM

PROBABLE CAUSES

The hands free-ECU may be defective.
The radio and CD player may be defective.
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the radio and CD player operation.

Check if the radio and CD player work normally and the sound is output.

Q. Is the check result normal?

	Go to Step 2

	Troubleshoot the radio and CD player. (Refer to .)

STEP 2. Connector check: C-218 hands free ECU connector, C-105 radio and CD player connector

Q. Is the check result normal?

	Go to Step 3.

	Repair the defective connector.

STEP 3. Check the wiring harness between C-218 hands free ECU connector terminal No.2, 16 and C-105 radio and CD player connector terminal No.9, 18.

Check the signal lines for open circuit and short circuit.

note

Prior to the wiring harness inspection, check the joint connector C-102 <LHD> and C-232 <RHD>, and repair if necessary.

Q. Is the check result normal?

	Go to Step 4.

	Repair the wiring harness.

STEP 4. Check if the power supply circuit of hands free-ECU have a problem.

Perform the Inspection procedure 1 "Check the hands free-ECU power supply circuit." of the troubleshooting. (Refer to

<Vehicles without Auto Stop & Go (AS&G) System> or

<Vehicles with Auto Stop & Go (AS&G) System>)

Q. Is the check result normal?

	Go to Step 5

	Repair according to the troubleshooting for reference.

STEP 5. Replace the hands free-ECU temporarily, and check the trouble symptom.

Q. Is the check result normal?

	Replace the hands free-ECU.

	Replace the radio and CD player.