Jeep Alternator Field Wiring

Alternator field terminals both read full voltage when. Supposedly the dark green wire is supposed to be the ground or negative field terminal on the back of the alternator. Another possibility is a bad battery temperature sensor.

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For example the alternator may produce 50 to 70 amperes during operation but the field current may only be a couple of amperes.

Jeep alternator field wiring. A wiring diagram is a simplified traditional pictorial representation of an electrical circuit. The best part of testing your alternator field current is you don t need to turn on your engine. Variety of jeep cherokee alternator wiring diagram. Https amzn to 2rooije oem dodge v.

The alternator field current is substantially lower than the current output the alternator produces while operating. If these are all good then you need to check the wiring between the pcm and the alternator or the pcm itself may have a problem. If this sensor tells the pcm that the battery is too hot the pcm might refuse to power the field coil cause it thinks bad things might happen if the alternator tries to charge an overheated battery. Jeep wrangler how to test the alternator jeepalternator howtotestanalternator duration.

How to wire up a external voltage regulator for an alternator. It reveals the elements of the circuit as simplified forms as well as the power and signal links between the gadgets. Amazon affiliate links adjustable dodge voltage regulator. Without a working alternator my battery was at 12 2 volts and one is supposed to read 3 4 volts less than that.