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DTC U0155: CAN Time-out Error (Combination Meter)
 
 
 
 
DIAGNOSTIC FUNCTION
The CVT-ECU determines that the system is defective if the ECU can receive no CAN communication information from the combination meter.
 
 
JUDGMENT CRITERIA
No information is received from the combination meter for 2.5 seconds.
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus line
  • Malfunction of combination meter
  • Malfunction of CVT-ECU
 
 
DIAGNOSIS
STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting, Diagnostic Trouble Code Chart ).
 
STEP 2. M.U.T.-III diagnostic trouble code
Check if the combination meter-related diagnostic trouble code is stored.
Is the combination meter-related diagnostic trouble code stored?
Carry out the appropriate troubleshooting.
Go to Step 3.
 
STEP 3. M.U.T.-III diagnostic trouble code
Is diagnostic trouble code No. U0155 stored in the other ECU, which communicates with the combination meter via CAN?
Is the diagnostic trouble code stored?
Go to Step 4.
Go to Step 5.
 
STEP 4. Symptom recheck after erasing diagnostic trouble code
Is the diagnostic trouble code stored?
Replace combination meter.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions .).
 
STEP 5. Symptom recheck after erasing diagnostic trouble code
Is the diagnostic trouble code stored?
Replace CVT-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions .).