DTC U0100: Lost Communication with ECM / PCM "A": Procedure
- CONFIRM DTC OUTPUT
- Connect a Techstream to the DLC3.
- Turn the ignition switch on and turn the tester on.
- Check for DTCs and note any codes that are output. Refer to DATA LIST / ACTIVE TEST .
- Clear the DTC. Refer to DTC CHECK / CLEAR .
- Recheck for DTC. Refer to DTC CHECK / CLEAR
.
Result
Result Proceed to DTC output A DTC not output B
B → See step 3
A → See step 2
- GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING