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VEHICLE TECHNICAL QUESTION & ANSWER
A RELIABLE ADDRESS TO ANSWER YOUR VEHICLE TECHNICAL INFORMATION |
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Question:
Hi DTDAuto, I faced a problem with Honda LEAD 2010, I disconnect the connector plug of the idle air control valve (IACV) for checking then I reconnect it but the engine can not recover the original idle speed, it was over idle speed and I can not control it. After that, I decide to use MOTOSCAN to reset ECU and this problem disappears, could you explain the reason? |
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Answer: In your case, we often call it is “lost synchronization of the control position” between ECM and IACV. This fault often happen when the IACV connector is disconnected while ignition key is turned on, or the engine is rotating and when connect it again, the ECM located the wrong the position of IACV cause of wrong control. So, you need to make offset it by Reset ECM to request ECM receives again the start and the end point of IACV the engine will recover original idle speed. | ||
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