04-24-2020, 05:26 AM
Speed,
I am an electronics tech (as are a few others on the board) and have a scope. Mine is similar to yours, but is a Tektronix digital scope. If you can provide your exact test setup (like probe connections on the bike) I may be able to use my bike as a baseline.
Honda does not have waveform information in the service manual. WE have to find it out ourselves.
I have a diagnostic tool that reads parameters, but not waveforms. It gets its info from the ECM.
What year and model bike do you have?
Do you have a wiring diagram?
Without a diagnostic tool, there is a manual method of reading codes. Unless Peterbaron or LR or someone chimes in, I'll have to look up how. It isn't hard and you read the MIL (check engine light) flashes. IACV is code 29.
However, the first thing you should do is reseat/clean all connecters from the IACV back to the ECU.
There is a pretty in-depth guide for this problem posted somewhere here. A group of us did a LOT of behind the scene work on it and one member wrote the procedure. 105 ohms is within the normal range for both IACV readings (99-121@25c)
I am an electronics tech (as are a few others on the board) and have a scope. Mine is similar to yours, but is a Tektronix digital scope. If you can provide your exact test setup (like probe connections on the bike) I may be able to use my bike as a baseline.
Honda does not have waveform information in the service manual. WE have to find it out ourselves.
I have a diagnostic tool that reads parameters, but not waveforms. It gets its info from the ECM.
What year and model bike do you have?
Do you have a wiring diagram?
Without a diagnostic tool, there is a manual method of reading codes. Unless Peterbaron or LR or someone chimes in, I'll have to look up how. It isn't hard and you read the MIL (check engine light) flashes. IACV is code 29.
However, the first thing you should do is reseat/clean all connecters from the IACV back to the ECU.
There is a pretty in-depth guide for this problem posted somewhere here. A group of us did a LOT of behind the scene work on it and one member wrote the procedure. 105 ohms is within the normal range for both IACV readings (99-121@25c)