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bill, dodge master tech
Category: Dodge
Satisfied Customers: 1606
Experience:  25 years with dodge drivability and electrical expert
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2012 dodge Ram CUMMINS WHICH FUSE POWERS Air Flow Sencer

Customer Question

2012 dodge Ram CUMMINS WHICH FUSE POWERS Air Flow Sencer
Submitted: 8 months ago.
Category: Dodge
Expert:  bill replied 8 months ago.

i need the vin to get the correct wiring diagram, all chrysler diagrams are vin specific

do you mean the sensor in the air box or another one any fault codes will be helpful

MOST sensors DO NOT have a fused power and run on 5 volts

Customer: replied 8 months ago.
Senser A 3c632drkl7cg259105 On the air box PO102 I replaced the sencor and it only has 2.5 volts
Customer: replied 8 months ago.
vin #3C632DRK17CG259105
Expert:  bill replied 8 months ago.

you added a 2 next to the DRK but i was able to decode it

here is a link to the diagnosis for that code and one for the smart relay the diagnosis includes a wiring diagram

the fault you are getting indicates a short to ground somewhere, the fuse that powers this relay is M21 (20 amp YELLOW) BUT the truck will likely NOT run id this fuse is missing or blown as the "smart relay" (also known as ASD relay) is a major power feed.

please look them over and ask further questions if you need, also they are only up a few days so save the documents to your pc

Expert:  bill replied 7 months ago.

following up to see if you still need assistance