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DTC U0155: CAN Time-out Error (Combination Meter)
 
 
 
 
DIAGNOSTIC FUNCTION
The TCM determines that the system is faulty if the TCM 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 TCM
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus lines.
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Use the scan tool (M.U.T.-III) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis - CAN Bus Diagnostics Table ).
 
STEP 2.Use scan tool (M.U.T.-III) to check the DTC of other systems.
Check if the combination meter-related DTC is stored.
Is the combination meter-related DTC stored?
Carry out the appropriate troubleshooting (Refer to GROUP 54A, Combination Meter - Diagnosis - Diagnostic Trouble Code Chart ).
Go to Step 3.
 
STEP 3. Use scan tool (M.U.T.-III) to check the DTC of other systems.
Is DTC U0155 stored in the other ECU, which communicates with the combination meter via CAN.
Is the DTC stored?
Go to Step 4.
Go to Step 5.
 
STEP 4. Symptom recheck after erasing DTC.
Is the DTC stored?
Replace combination meter (Refer to GROUP 54A, Combination Meter ).
Intermittent malfunction (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
 
STEP 5. Symptom recheck after erasing DTC.
Is the DTC stored?
Replace the TCM (Refer to ).
Intermittent malfunction (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).