[Previous][Next]
DTC U0100: Engine CAN Timeout
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
 
 
OPERATION
AWC-ECU communicates with the engine control module via the CAN bus lines.
 
 
DTC SET CONDITION
This DTC is stored when the abnormality below is detected:
  • The signal sent from the engine control module cannot be received for a certain period.
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus line
  • Malfunction of power supply circuit system (engine control module)
  • Malfunction of ECU (engine control module)
  • Malfunction of AWC-ECU

 
 
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics.
Use scan tool (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 - Diagnosis, Can Bus Diagnostics Table ). After repairing the CAN bus line, go to Step 2 .
 
STEP 2. Scan tool (M.U.T.-III) other system DTC.
Check the engine DTC (Refer to GROUP 13A - Diagnosis, Diagnostic Trouble Code Chart ).
Is the DTC stored?
Perform the relevant troubleshooting.
Go to Step 3.
 
STEP 3. Check whether the DTC is stored again.
Is DTC No.U0100 stored?
Replace the AWC-ECU (Refer to ). Then go to Step 4.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
 
STEP 4. Check whether the DTC is stored again.
Is DTC No.U0100 stored?
Return to Step 1.
This diagnosis is complete.