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  1. #1
    Active Member One Ring
    Join Date
    Jan 20 2024
    AZ Member #
    977707
    Location
    Georgia

    Unhappy SAI Pump getting no power b8.5 S4

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    Secondary air pump on my 2015 S4 currently has no power going to it at all, I used a circuit tester on the pump and it powers on perfectly fine, but once applied to the actual wires connected to the vehicle no power at all. Checked where the pigtail connected to the engine and no issues or visible damage so I went to check fuses. I couldn't find a fuse diagram for B8.5 S4 so I used one for B8 A4 and only got to replace 1 fuse before I realized I had no idea what I was doing. If anybody knows where to find a proper diagram or which fuses or relays to replace on the diagram below or any other issue that could cause a Secondary Air Pump to not get power please let me know since this is the only issue left remaining on my car.


    Fuse diagram I used (Only replaced 15)


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