2010 Ford F 250 Checking Voltage On Trailer 7pin Plug Find 12v Brake Pin Push

2010 FORD F-250
36 MILES
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In checking the voltage on my trailer 7pin plug I find I have 12v on the brake pin when I push the adjusting arm to the left but I can't get any voltage on the pin when I step on the brakes, no matter how many times I press the plus button. Do I have a bad controller??
Dec 30, 2012 at 5:04 PM
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HMAC300
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check fuses underhood first to see if you have one blown, then have it scanned to see if it's the controller or transducer at master cyl. it could also be a bad connection or wire leading to connectior.
Dec 30, 2012 at 5:13 PM
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