Code No.U0184 AUDIO CAN timeout
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- If 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.
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DIAGNOSTIC FUNCTION
If the signal from the radio and CD player cannot be received, the hands free-ECU sets the diagnosis code No. U0184.
PROBABLE CAUSES
- Malfunction of CAN bus line
- Malfunction of the radio and CD player
- Malfunction of hands free-ECU
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.
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 Diagnosis Code Chart 
).
Go to Step 3.
STEP 3. Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the hands free-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the hands free-ECU.
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).