DTC U0100: Lost Communication with ECM / PCM "A" [09/2014 - ]: Procedure
- CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0100)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Check if DTCs are output.
Result
Display (DTC Output) Proceed to U0100 A U0100 and other DTCs B
B → See step 3
A → See step 2
- REPLACE ECM. Refer to COMPONENTS [09/2014 - ]
- GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2014 - ]