Code No.U0141 ETACS CAN timeout

caution

If diagnosis code No.U0141 is set, be sure to diagnose the CAN bus line.
Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

TROUBLE JUDGEMENT

If signal from the ETACS-ECU cannot be received for 2500 milliseconds or more, the camera-ECU sets diagnosis code No.U0141.

PROBABLE CAUSES

Malfunction of ETACS-ECU
Malfunction of camera-ECU
Malfunction of CAN bus

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) and then go to Step 4.

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

Check if diagnosis code No.U0141 is set in the combination meter.

Q. Is the diagnosis code set?

Go to Step 3.

Go to Step 4.

STEP 3. Diagnosis code recheck

Check again if the diagnosis code is set in the camera-ECU.

(1)Erase the diagnosis code.

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

(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?

Replace the ETACS-ECU.

A poor connection, open circuit, or other intermittent malfunction in the CAN bus line between the camera-ECU and the ETACS-ECU. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction.)

STEP 4. Diagnosis code recheck

Check again if the diagnosis code is set in the camera-ECU.

(1)Erase the diagnosis code.

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

(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?

Replace the camera-ECU. (Refer to

)