How do I check to see if the ecu is working. The ground is good but the led light does not come on. My check engine light is always on .
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How do I check to see if the ecu is working. The ground is good but the led light does not come on. My check engine light is always on .
Your ECU has completely failed. Buy a new one based on price and warranty. Get an exact Honda Part No. match.
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