S26 fuse short testing

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  • Yuriah
    S2Forum Tinkerer
    • Apr 2022
    • 2
    • Country: United States

    #1

    S26 fuse short testing

    My constant power to ecu is shorting and blowing my 5amp fuse. I was wondering how to properly test for the short. Seems tough. Fuse doesn’t blow when the ecu is disconnected fyi.


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  • newsh
    S2Forum Obsessed
    • Aug 2003
    • 16226
    • Country: United Kingdom

    #2
    There’s a diode in the ECU which goes short and takes out the fuse, usually happens if the car is started with a jumper pack or has welding done without removing the ECU. Do a search and you will find details of the fix, it’s pretty common.

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