Here are a couple of questions I have.
1. Does the ECM read sensor voltage or current
2. Why does the MAP and the TPS have the extra ground wire
3. Which way does the current flow thru the CTS/ECT? Neg to Pos? What should the resisted value parameters be?
4. I have read there is a 5 volt ref signal output from ECM to ECT, but that doesn't make sense to me. I Am unaware of how the ECM would be able to read the resisted value