![]() ![]() For the rest of the process, please refer to the drawing below: Start by removing all the 10 bolts (5 on each side) that hold the ECM covers. ![]() Static electricity may be high enough to damage the ECM if it ever receives a discharge from you. This will protect the ECM and components to be installed. Check #11 of the drawing above for using the electrical household circuit for this. Also, make sure you put on the anti-static wrist and connect the other end to an earth ground, like a metal conduit of the household electrical circuit. A short length cut from the resistor lead will do the job.Īlso, have the needed tools handy for this job, which are:ġ- A Phillips #2 screwdriver (for removing and replacing the ECM covers)Ģ- A small flat screwdriver (for prying the chip out of the socket if needed)ģ- Small wire cutters or clippers (for cutting excess length of components leads)Ĥ- Long nose pliers (For holding the small parts when installing)ĥ- 35-watt soldering iron (for soldering/desoldering the parts in the circuit)Ħ- Desoldering vacuum tool or desoldering braid (for removing parts and cleaning connections)Ĩ- Alcohol pads (for cleaning the circuit board from excess soldering flux)ĩ- Anti-static wrist (for protecting the ECM from static electricity)ġ0- Soldering flux (liquid or paste, for electronic soldering – DO NOT use plumbing or any acid flux)īefore starting, plug the soldering iron in so it gets ready to use in a few minutes. The jumper can be any piece of thin wire. Have handy all the parts in the kit, which are the Power-ROM chip, the 1K resistor, the two 0.1uf capacitors, the 74HC373 chip, and a wire jumper. Once you uninstall the ECM from the car, place it on a bench or flat table for working it out. It is be located beneath the carpet in the passenger’s side footrest. Multi-layer means that it has connections above, below, and inside the top and bottom circuit board layers.įirst, uninstall the ECM from your car. Also, you may find it somewhat difficult to desolder parts from these circuit boards because of its multi-layer structure. This requires electronic components soldering skills, especially when working with these ECM circuits, which are sensitive to overheat when soldering and unsoldering parts on it. Those are, but not limited to, the Honda P05, P06, P08, P28, P30, P72, P75, and PR4 (OBD-I version). The circuits of all of them are based on the same construction design. While this covers installing a chip on the USDM version (US Domestic Market) Honda P28 ECM, the procedure is the same for almost all 1992-1995 (OBD-I) Civic and Integra ECMs. ![]()
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