Question about 2003 Ford Expedition
I have a ford Expedition EB 2003. the battery light and system charge light came on then the truck cut off. I replace the battery and alternator and the battery and system charge light will not go off.
If he replaced the battery that would have cleared the code. There is another issue. Was the alternator aftermarket? Just becuase it is new does not mean good. Those are easy to install I would return it to where you got it and try another.
Posted on Mar 14, 2009
The error code has to be reset by an obd11 scanner tool which some of you buddies might have or the dearlership
Posted on Jan 17, 2009
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Posted on Jan 02, 2017
Its probably the alternator. It will need to be tested on the vehicle with the engine running and the light illuminated. Measure the battery voltage with the engine running. It should be at least 13.5 volts. If it is lower have the alternator tested at a shop with a charging system tester.
Posted on Feb 27, 2010
Tips for a great answer:
How did you test battery and charging system?
Your charging system is computer controlled. Check for applicable trouble codes. To check codes yourself, at the least you need an obd2 code reader that will check manufacturer specific codes as well as po codes.
Take wire connector loose from generator . The two wires on the left should show battery voltage, do they? What is the voltage spec? This is with key off and no charger hooked up.
The two wires on the right are to and from the computer, To check those, at least, you need a digital multimeter that has a duty cycle or frequency setting, with engine running, should activity on both wires. You have a battery temp sensor that could cause problems.
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