DTC U0100: Lost Communication with ECM / PCM "A": Procedure

1. Check for DTCs and note any codes that are output, refer to DTC CHECK / CLEAR .
2. Clear the DTCs, refer to DTC CHECK / CLEAR .
3. Recheck for DTCs, refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   CAN communication system DTC is not output	A
   CAN communication system DTC is output	B

   HINT: 

   If CAN communication system DTC U0100 and another DTC are output at the same time, perform troubleshooting for CAN communication system DTC U0100 first.

B → See step   2 

A → See step   3