DTC U1100: Powertrain Control Module Time-Out (Related To Engine); DTC U1101: Powertrain Control Module Time-Out (Related To A/T): Notes

CAUTION:

If DTC U1100 or U1101 is set in the ETACS-ECU, always diagnose the CAN main bus line.
Whenever the ECU is replaced, ensure that the communication circuit is normal.

NOTE: When the DTC relating to the CAN communication error are output, make sure of the vehicle equipment. When the vehicle is not equipped with the system the ETACS-ECU communicates to, the DTC is always output. This is not abnormal.