DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [09/2018 - ]: Procedure
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- CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0100-87)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- 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 [09/2018 - 09/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 09/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ]
Result:
A
See step 2
- REPLACE ECM
- Replace the ECM.
Refer to COMPONENTS [08/2015 - ]
Result
Proceed to NEXT
Result:
NEXT
PERFORM A/T CODE REGISTRATION. Refer to REGISTRATION [08/2015 - ]
- Replace the ECM.