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It's likely the ECM needs replacing. Water, from flooding and windows left down in summer storms, are two common ways that ECMs bite the dust. Run the K-Test on your ECM and, if it fails the test, replace with a remanufactured Cardone ECM, with a lifetime warranty, from O'Reilly Auto Parts. It will cost 1/3 of what a new Honda ECM goes for, which only comes with a 1-year warranty.
The K-Test: Remove the MAP Sensor connector and turn the ignition switch to ON (Position II). Using a multimeter, check for 5 volts going between the MAP Sensor connector's reference wire (+) and ground. As you look at the connector, this is the socket on the right. Really press the black test lead into a cleaned main ECM ground on the thermostat housing. If the voltage is low, it's probably indicating ECM failure. Most failed ECMs will record a fraction of a volt. To me, the K-Test is simple, elegant, and accurate. |
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