Code No. U0155: Combination meter time-out


caution
  • If diagnosis code U0155 is set in the A/T-ECU, always diagnose the CAN main bus line.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.

DIAGNOSIS CODE SET CONDITIONS


If signals from the combination meter transmitted via CAN bus line cannot be received, code No.U0155 is set.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

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

  • Use M.U.T.-III to perform CAN bus line diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN Bus Diagnostics Table ). After repairing CAN bus line, go to Step 6.

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

  • Confirm whether the diagnosis code is set in the combination meter.

Q. Is diagnosis code set?
Perform troubleshooting of Combination Meter (Refer to GROUP 54A - Combination Meter - Diagnosis Code Chart ).
Go to Step 3.

STEP 3. M.U.T.-III diagnosis code
Check that the other ECU performing CAN communication with combination meter sets diagnosis code No. U0155 [Refer to GROUP 54C - CAN Communication-related Diagnosis Code (U-code) Table ].

Q. Is diagnosis code set?
Go to Step 4.
Go to Step 5.

STEP 4. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.
Confirm again whether the diagnosis code is set in the A/T-ECU.

  1. Erase the set diagnosis code.
  2. Ignition switch: LOCK (OFF) → ON
  3. Confirm whether the diagnosis code is set.

Q. Is diagnosis code set?
After replacing the combination meter, go to Step 6.
Intermittent malfunction in CAN bus line between A/T-ECU and combination meter (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

STEP 5. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.
Confirm again whether the diagnosis code is set in the A/T-ECU.

  1. Erase the set diagnosis code.
  2. Ignition switch: LOCK (OFF) → ON
  3. Confirm whether the diagnosis code is set.

Q. Is diagnosis code set?
After replacing the A/T-ECU, go to Step 6.
Intermittent malfunction in CAN bus line between A/T-ECU and combination meter (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

STEP 6. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.
Confirm again whether the diagnosis code is set in the A/T-ECU.

  1. Erase the set diagnosis code.
  2. Ignition switch: LOCK (OFF) → ON
  3. Confirm whether the diagnosis code is set.

Q. Is diagnosis code set?
Go to Step 1.
Check end.