Question about 2002 Ford SVT Focus
This response contains troubleshooting procedures designed to locate the cause of an overnight power drain resulting in a dead battery, It assumes the charging system is working.
The first (and easiest) test I run is on the battery.
When you are done using it for the evening, pull the Negative battery cable.
In the morning, re-connect it. If it's dead again, the battery need replacement. This does not necessarily mean you found the problem.
If it starts, the battery is ok. It's time to look for the power drain.
With the ignition off, ensure the systems that should be off actually are off. For example: does the radio still come on? Wipers? Etc.?
In the same vein, has anything new been installed lately?
The next test is a lot more tedious. You will need a test light, needle nose pliers (to pull fuses) and the proper tools to remove the negative battery terminal (again).
This procedure will allow you to focus in on the problem area. Let me know what you find out.
Hope this helps
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Posted on Jul 24, 2008
Test the output of the alternator, 14-15 volts is what you are looking for.
Posted on Dec 11, 2008
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Posted on Jan 02, 2017
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