DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2018 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0100-87)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Transmission / Trouble Codes.
Powertrain > Transmission > Trouble Codes
- Read the DTCs using the Techstream.
Result
Result Proceed to Only DTC U0100-87 is output A DTC U0100-87 and other DTCs are output B
Result:
B
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 10/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 12/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2021 - 10/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - ]
Result:
A
See step 2
- REPLACE ECM
- Replace the ECM.
Refer to REMOVAL [11/2018 - 08/2020] , or refer to REMOVAL [08/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]
Result
Proceed to NEXT
Result:
NEXT
PERFORM REGISTRATION. Refer to REGISTRATION [11/2018 - ]
- Replace the ECM.