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Re: I need the wiring scheme for a mazda mpv voltage...
It may be in the back of the alternator or if it is late model it will be in the ECM unit so schematics may be hard to come by
you may get a schematics if you can get a diagram of the alternator .
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Fixyahttps://www.fixya.com > ... > MPV > 1998 Mazda MPV
Your ground wire connection for the OBD2 connector is located under the dash just below and to the right of the heater controls. More likely that you dont have ...
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Then it could be the ECM. You first need to check wiring and plugs for corrosion. You'll need a volt/ohm meter and a wiring schematic. ECM's are costly and then need programmed to the vehicle.
It is likely your charge wire or field circuit is shorted. If you mean you want to install an external regulator, I cannot recommend that, as it will likely cause a fault to disconnect the alternator from the computer. Trace all of the alternator wires, big and small; and I believe you will find a short. If you have an ohmmeter, use it to make sure the field power wire is isolated from chassis ground.
ALL windows inoperative? The RED/WHITE wire should have 12 V (you didnt say which wire has 12V?) Be sure the BLACK wire does not have voltage when trying to move window, thats the ground wire. If the black wire has voltage then the ground circuit is bad. if you suspect the ground cicuit, manually ground the black wire and see if the switch comes to life.l
Removing either battery cable, thereby taking the battery out of the circuit, with the engine running can cause the alternator to charge full tilt and destroy sensitive micro volt (computer controlled) components; and I've seen wiring harnesses go up in flame from it. You may have a module problem.
Remove the door panel, disconnect the window from the regulator. Push the window all the way up. Secure it either with duct tape, or prop good with screwdriver. Do not let it fall down. You should be able to work inside the door now to get the bolts and screws out to remove the motor and regulator.
if you do not here the motor then its the regulator or motor that needs to be replaced/ cif you hear the motor check the control switch on the trim panle coould be just a five dollar part to replace/ Please rate my response thank you very much
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