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tach output help

Posted by kongo, Jun 12, 2012

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  1. kongo

    kongo Proven Member

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    new orleans, Louisiana

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    1999 Mitsubishi Eclipse N/T
    · 2G DSM
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  2. CODE4

    CODE4 Proven Member

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    Joined Jun 6, 2004
    Tampa, Florida
    MS1? You should be able to jumper the FIdle output to the appropriate pin on the processor for TachO use. You could also use a small protoboard and build a separate circuit too. Up to you.
     

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    1999 Mitsubishi Eclipse N/T
    manual · 2G DSM
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  3. VelocitàPaola

    VelocitàPaola Moderator

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    Ft. Lauderdale, Florida
    Which board do you have (v2.2/v3.0/v3.57)? Like Dave asked, are you using MS1, MS2, or MS3? For MS1, the FIDLE pin on the processor can't generate a tach signal like it can with MS2/MS3. You would be better off using JS0, JS1, JS2, JS3, JS7, or pin 10 if you can. You could build the circuit externally, but it would be better to build it inside the enclosure.
     

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    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
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  4. kongo

    kongo Proven Member

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    Joined Jan 8, 2009
    new orleans, Louisiana
    Sorry about that. Took a chance an went with above diagram. In the proto area. Going from cpu pin js11, then built diagram going out to spr1. From spr1 to white wire under glove box. My tach works now. Decide to use F idle for cooling fans.

    Side note ms2 ver 3
     

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    1999 Mitsubishi Eclipse N/T
    · 2G DSM
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  5. VelocitàPaola

    VelocitàPaola Moderator

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    Joined Jun 14, 2005
    Ft. Lauderdale, Florida
    For MS2/v3.0, it sounds like you got it all right.
     

    2K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
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