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DTC U0141 ETACS CAN timeout
DTC U1190 No receive fault detect signal
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
 
 
OPERATION
A fault detection enabling/inhibiting signal is sent from the ETACS-ECU to the EPS-ECU.
 
 
 
TROUBLE JUDGMENT
Check Conditions
  • Engine start
Judgment Criterion
  • When the microcomputer cannot receive any fault detection enabling/inhibiting signal from the ETACS-ECU, it determines that there is a problem in the system.
Fail Safe, Back Up Function
  • The EPS-ECU sets DTC U1190.
 
 
 
TROUBLESHOOTING HINTS
  • Malfunction of CAN bus line
  • Malfunction of the ETACS-ECU
  • Malfunction of the EPS-ECU
 
 
 
 
DIAGNOSIS
1. scan tool (M.U.T.-IIISE) CAN bus diagnostics
2. Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ).
3. Replace the EPS-ECU (Refer to ).