[Previous][Next]
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.
 
 
DIAGNOSTIC FUNCTION
If the signal from ETACS-ECU cannot be received, the gateway-ECU sets DTC U0141.
 
 
TROUBLE JUDGMENT
With the electric motor switch is at ON position, DTC U1190 is not set, if the communication with ETACS-ECU cannot be established for 2,500 ms or more, the gateway-ECU determines that a problem has occurred.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of CAN bus line
  • Malfunction of the gateway-ECU
  • Malfunction of the ETACS-ECU
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Turn on the power supply mode of the electric motor switch.
(3) Diagnose the CAN bus line.
(4) Turn off the power supply mode of the electric motor switch.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), read the EPS-ECU DTC.
Check whether an ETACS "time-out" related DTC is set in other ECUs (Refer to GROUP 54C - CAN-Related Diagnosis Code Table ).
Is the DTC set?
Go to Step 3.
Go to Step 4.
 
STEP 3. Recheck for DTC.
Check again if the DTC is set in the gateway-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the electric motor switch from OFF to ON.
(3) Check if DTC is set.
Is the DTC set?
Replace ETACS-ECU (Refer to GROUP 54A - ETACS ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the ETACS-ECU and the gateway-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
 
STEP 4. Recheck for DTC.
Check again if the DTC is set in the gateway-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the electric motor switch from OFF to ON.
(3) Check if DTC is set.
Is the DTC set?
Replace gateway-ECU (Refer to ).
A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the ETACS-ECU and the gateway-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).