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When the starter fails, you will hear a clicking noise or the engine will be hard to start. Voltage or amps surge, causing ECM 1's fuse to blow. It is the central control unit of most vehicles and controls a variety of functions, such as electrical system power distribution, emissions, ignition, and fuel systems. If a starter is failing or has fail, voltage can get redirected to ECM. What does the ECM fuse control The ECM, or electronic control module, is the computer responsible for controlling all of the engine management functions. Voltage from the battery is sent to the starter, which then engages and starts the engine. It is best to have a qualified technician - with tools and devices to narrow down specific wires causing short - work on such fuse problems, starter is a component that engages the engine when the ignition system is turned on. It is hard to track down short circuit, but you will have to look at every wire leading to ECM. Anytime electrical wire becomes fray, burnt or damage, wiring leading to ECM 1 will short - circuit once wire short - circuits, power surge can occur if power surge exceeds ECM 1 fuse's limitations, it will blow fuse. Ecm 1 operates via voltage sent from the battery. O2 sensors must be installed in different places to ensure wires do not short - circuit. If wires leading to the O2 sensor rub against exhaust, it creates ground once the O2 sensor is ground, fuse to ECM 1 blows. Although complaints have been reported about the O2 sensor causing ECM 1 fuse to blow, in reality it is not the O2 sensor causing the problem, it is the placement of the O2 sensor. If an electrical wire gets burned or damaged, the cables pointing to the ECM is going to short. ECM functions by getting energy from the battery. Below, MINTT specialists are going to list the most common issues: Wiring. There are a lot of potential errors that can generate a fuse blow. Many component defects can cause your ECM 1 fuse to blow. The fuse blows before any damage can strike the module. Came back to car and installed it, but still having same issue. Mech said it may be the ECM module, so I went to the local LKQ Junkyard and found a replacement.
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I drove for couple days and then I filled up the tank to top. Mech replaced the fuses next to the ECM Relay module and tried to start, but fuses keep blowing every time. It seemed it could be related to EVAP problem. When I got the yellow engine warning last week, I scanned the 2011 acadia and it showed P0451 code. Ecm 1 is one such computer it has a fuse instal to protect the computer from sudden power surges or other component damage - fuse will blow before any damage can reach ECM. No start 5.7 Vortec YouTube ECM B fuse blowing 98 Chevy GMC problem found. An Electronic control module - also called powertrain control module or electronic control unit - is a computer which controls electronics in automobile.