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Reload this Page Flashing 4WD lights on 1999 Ford Ranger

Electrical & Lighting A car's electrical can be a complicated system to navigate. Whether you are just replacing a headlight or you are doing some custom wiring for a modification project, post your comments/questions in this forum to let our community help you through your projects.

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Old 01-28-2008, 12:58 PM   #1 (permalink)
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Default Flashing 4WD lights on 1999 Ford Ranger
could it be dirty sensors?
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Old 01-28-2008, 01:23 PM   #2 (permalink)
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Most likely that or something else. Take it to a dealer and get it scanned by their computer, I am not sure if a OBDII scanner will do the trick.
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Old 01-28-2008, 07:10 PM   #3 (permalink)
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If the PCM detects a transfer case problem it would set a DTC and switch the MIL on. The codes are P1804 and up to P1877 and P1891.

Setting the transfer case light on will usually be done by the GEM, either acting on PCM instructions as above or itself detecting a problem. If the GEM detects a problem it will also set a code, but the GEM must be scanned for this code. Ford dealer can do this, but I am not sure if others can too.

Hope this helps.
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