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Where do I find the ECU?

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  • Where do I find the ECU?

    Can somebody please telll me where I can find the ECU as I need to trace and test the MAF wiring.

  • #2
    It's in the engine bay, near the battery.

    It's below that black box that hangs off the front of the battery.
    '07 Transporter 1.9 TDI
    '01 Beetle 2.0

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    • #3
      Originally posted by Umai Naa!! View Post
      It's in the engine bay, near the battery.

      It's below that black box that hangs off the front of the battery.
      Hmmm. Seems a nightmare to get to. Any tips please?

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      • #4
        You can get to the connectors on it without too much trouble.
        '07 Transporter 1.9 TDI
        '01 Beetle 2.0

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        • #5
          Originally posted by Umai Naa!! View Post
          You can get to the connectors on it without too much trouble.
          Umai, I had a look today but it was very 'closed in' with a lot of pipes etc covering it. Would you happen to have a picture or perhaps send me a link to a video? I looked on YouTube but nothing related to the T4 Transporter.

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          • #6
            Google is your friend.
            vw t4 ecu location - Google Search
            Understand how it works, troubleshoot logically BEFORE replacing parts.
            2001 T4 TRAKKA Syncro 2.5TDI,2006 Mk5 2.0TDI Golf manual,2001 Polo 1.4 16V manual [now sold], '09 2.0CR TDI Tiguan manual,
            Numerous Mk1 Golf diesels

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            • #7
              If my memory serves me well its attached to the inner firewall just to the right of the battery when viewed from the front , easy way would be to remove the battery .

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              • #8
                Found it down the front of my fuse box in front of the battery. Seems like I will have to remove the headlight to get to it. It is very cramped but it can be done.

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