Hot Rod Farmer: Control unit diagnostic protocols

Hot Rod Farmer: Control unit diagnostic protocols

March 13, 2024 0 By Ray Bohacz

When diagnosing an electronic control unit often a flow chart is what you follow, but there is more to the story than that. The protocols that need to be seen by the ECU to set a trouble code are the key to an effective diagnostic. A flow chart does not reveal the protocols and can lead you astray.