Ford Transit USA Forum - View Single Post - Alternator output
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post #9 of (permalink) Old 12-15-2016, 04:39:PM
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Originally Posted by rene12341 View Post
Well now I am more confused. I went out and checked using Torque and found there are 2 Volts listed, Control Module and OBD2. Highest on CM was 14.3V but highest on OBD2 is 14.9V.

Does anyone have any idea why they are so different? I wish Torque displayed battery voltage but that option is greyed out. I may need to put a recording meter on the battery and drive around.

Are the CCP terminal a valid way to check battery voltage? They are much easier to get to than the battery.
I figure the highest one is closest to actual alternator voltage- the CM one probably has some wiring losses.
BTW the voltage varies according to intake air temperature also, the PCM controls it- colder= higher voltage.

"Beluga" 2015 350HD 3.2D, 3.73, EL, HR.
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