Code No. U0155: Meter CAN Time-out


caution
  • If diagnosis code No. U0155 is set, be sure to diagnose the CAN bus line.
  • Before replacing the ECU, ensure that the communication circuit is normal.

DIAGNOSTIC FUNCTION


If the signal from combination meter cannot be received, the electric tailgate control unit sets diagnosis code No. U0155.

JUDGMENT CRITERIA


With the statuses that the ignition switch is at ON position, system voltage is 10 to 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 communication with combination meter cannot be established for 2,500 ms or more, the electric tailgate control unit determines that a problem has occurred.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


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


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

Q. Is the check result normal?

Go to Step 2.

Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting .)

STEP 2. Check the M.U.T.-III Diagnosis code for other systems


Check whether a combination meter-related diagnosis code is set.

Q. Is the diagnosis code set?

Troubleshoot the combination meter. (Refer to GROUP 54A - Troubleshooting )

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code


Check if the diagnosis code No. U0155 is set to the KOS-ECU, OSS-ECU, MMCS, radio and CD player, ETACS-ECU or A/C-ECU.

Q. Is the diagnosis code set?

Go to Step 4.

Go to Step 5.

STEP 4. Check whether the diagnosis code is reset.


Check again if the electric tailgate control unit sets a diagnosis code.
(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.

An intermittent malfunction may be present. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

STEP 5. Check whether the diagnosis code is reset.


Check again if the electric tailgate control unit sets a diagnosis code.
(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 electric tailgate control unit.

An intermittent malfunction may be present. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)