servo motor test - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 10-16-2013, 07:20 PM Thread Starter Rookie
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servo motor test

I read that I should hook a test light to the two wires going to the servo motor and see if there is any voltage when you first turn the switch to 4x4 with the engine running. Is the servo motor the shift motor on the transfer case? I am having problems with 4x4 light doesn't come on and will not engage on the fly or manually. I ordered a gem module and replaced 4x4 solenoid.
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post #2 of 2 Old 10-16-2013, 10:44 PM
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You should be able to just turn your key on and you should hear the servo switch. Whether your light works or not may be a different issue.

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