ETACS-ECU sends the DTC (U code) detection permission or prohibition signal to each ECU connected to the CAN bus line. If the multivision display cannot receive the DTC (U code) detection permission or prohibition signal for 5 seconds after turning the ignition switch to ON position, DTC U1190 will be set.
TROUBLESHOOTING HINTS
The ETACS-ECU may be defective
The CAN bus line may be defective
DIAGNOSIS
1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
2. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.