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Old 03-04-2011, 03:51 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
Join Date: Jun 2005
Location: California
Age: 52
Posts: 12,536
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ECU and ECM is the same. The ECM is the vehicles main computer. There are other computer or modules in your vehicle, the Body Control Module (BCM), Transmission Control Module (TCM), Engine Control Module (ECM) and many more.
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