Code No.U0184 Audio CAN timeout

caution

If the diagnosis code No. U0184 is set, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION

When the signals from radio and CD player cannot be received, the combination meter sets the diagnosis code No. U0184.

JUDGMENT CRITERIA

With the statuses that the ignition switch is at ON position, system voltage is 10 - 16 V (data from ETACS-ECU), and there is no malfunction to the power supply fuse, or odometer value is 80.5 km or more, if the communications with radio and CD player cannot be established for 2,500 ms or more, the combination meter determines that a problem has occurred.

PROBABLE CAUSES

Malfunction of CAN bus line
Malfunction of combination meter
Malfunctions of radio and CD player

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 2.

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting

STEP 2. M.U.T.-III other system diagnosis code

Check again if the diagnosis code is set to the radio and CD player.

Q. Is the diagnosis code set?

Troubleshoot the radio and CD player. Refer to

Go to Step 3.

STEP 3. Check whether the diagnosis code is reset.

Check again if the diagnosis code is set to the combination meter.

(1)Erase the diagnosis code.

(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.

(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?

Replace the combination meter.

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction