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15A fuse blows. What are these systems? C70 2007

posted by  Erwin on  Sat Jun 18 08:43 CST 2016
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last visit: Thu Oct 23 10:39 CST 2014
[RELATED]

The 15A fuse, #35 in the engine bay fuse panel, continues to blow daily. Here are the systems it protects:

1. Engine sensor to valves (Camshaft position sensor?)
2. A/C relay
3. PTC element oil trap (???)
4. Charcoal filter (Canister purge valve?)
5. Air mass sensor (MAF?)

I believe I've eliminated the AC as the culprit since the 10A AC compressor fuse doesn't blow and I've swapped out the AC relay.

I have a brand new Bosch MAF sensor I haven't installed yet, as I'd like to return it for refund if it's not the problem. Since the MAF reading is 0.0 on the scanner with a blown fuse, I may leave it disconnected and see if the fuse blows again.

Question is; Where are items 1, 3 & 4, above? Is 4 a purge solenoid?

Thanks!

ER







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    15A fuse blows. What are these systems? C70 2007

    posted by  B.B. on  Sat Jun 18 13:30 CST 2016
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    last visit: Mon Oct 6 13:15 CST 2014
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    Hi Erwin,


    You should first check for OBD codes to help diagnosis.

    I looked at TP3999202 the 2007 C70 wiring diagram
    and Fuse 35 controls more than you mentioned, 15 items to be exact.

    see page 16 (of 326) for the listing starting with:

    2/22 Climate ctrl relay
    4/46 engine ctrl module
    6/67..........

    Then you visit pages 262-292 to look up the items and there will be a
    indentification a picture, and a location, and some have connector info.

    Post back with news about any codes, my guess is that you'll have plenty.

    Bill








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      15A fuse blows. What are these systems? C70 2007

      posted by  Erwin on  Sat Jun 18 13:44 CST 2016
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      last visit: Thu Oct 23 10:39 CST 2014
      [RELATED]

      I don't have the document you're referring to unless its the link Klaus provided. Can't open it on my phone. The list I mentioned is from the owners manual. Not surprised if it's not complete. I've decided to take it to a. Volvo independent and not spend the weekend. Chasing gremlins. Fwiw, scanned codes, there were only 7 (misfire, maf, etc. Replaced the fuse and drove it 10 miles without CEL. Not calling it fixed.

      ER








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    15A fuse blows. What are these systems? C70 2007

    posted by  KlausC on  Sat Jun 18 11:46 CST 2016
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    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    http://volvoforums.com/forum/volvo-c30-41/2009-c30-car-keeps-blowing-fuse-35-a-83785/

    What the above means, I have no idea! Why is there electrical current going there? Modern engines, too many gizmos!!

    --
    Keeping it running is better than buying new







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