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DTC U0141 ETACS CAN timeout
 
 
caution
  • If DTC U0141 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSIS FUNCTION
If no signal from ETACS can be received, KOS&OSS-ECU sets DTC U0141.
 
 
PROBABLE CAUSES
  • Malfunction of CAN bus line
  • Malfunction of KOS&OSS-ECU
  • Malfunction of ETACS-ECU
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line
Use scan tool (M.U.T.-IIISE) 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 ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check the other system DTC.
Check if any DTC is set in the ETACS-ECU.
Is the DTC set?
Perform troubleshooting for ETACS (Refer to GROUP 54A - ETACS - Diagnosis ).
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-IIISE), check the other system DTC.
Check if DTC U0141 is set in the combination meter.
Is the DTC set?
Go to Step 4.
Go to Step 5.
 
STEP 4. Check whether the DTC is set again.
Recheck if the DTC is set in the KOS&OSS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON."
(3) Check if the DTC is set.
Is the DTC set?
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS - ETACS-ECU ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the ETACS-ECU and the KOS&OSS-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
 
STEP 5. Check whether the DTC is set again.
Recheck if the DTC is set.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON."
(3) Check if the DTC is set.
Is the DTC set?
Replace KOS&OSS-ECU and register the ID codes (Refer to ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the ETACS-ECU and the KOS&OSS-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to cope with Intermittent Malfunction ).