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Thread: 20V Thermo Fan Wiring...

  1. #1
    Beer anyone?? Domestic Engineer Just1n_mc's Avatar
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    Default 20V Thermo Fan Wiring...

    Does anyone have a wiring diagram for the thermo fan circuits on a Silvertop 20V? I recently fitted one to my AE82 and since I fitted it as soon as I turn the ignition on the thermo fan runs flat out. I figure that it gets an earth from the ECU to trigger the relay but are running into issues tracking down the diagrams.

    The car I pulled it from was running A/C and my car isn't so all the A/C gear isn't wired in.

    I didn't have this issue prior to removing the 20V so I don't think it is a sensor issue but more of a wiring problem.

    If anyone has any diagrams or ideas i'd greatly appreciate it.
    1970 2M MS55 Crown - Weekend Cruiser.
    1970 2R RT40 Corona - Cruising Grandpa Style
    1986 20V 4AGE AE82 Corolla - The Brown Racecar.
    1988 4AGE AW11 MR2 - Sold but not forgotten
    1992 1MZFE SW20 MR2 - Sold Supercharged V6 Monster.

  2. #2
    Junior Member Automotive Encyclopaedia
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    Default Re: 20V Thermo Fan Wiring...

    U have a break in the light green trigger wire from the fan sensor to the relay

  3. #3
    Beer anyone?? Domestic Engineer Just1n_mc's Avatar
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    Default Re: 20V Thermo Fan Wiring...

    So it doesn't go through the ECU?

    Just straight from the single wire sender on the thermostat housing to the relay?
    1970 2M MS55 Crown - Weekend Cruiser.
    1970 2R RT40 Corona - Cruising Grandpa Style
    1986 20V 4AGE AE82 Corolla - The Brown Racecar.
    1988 4AGE AW11 MR2 - Sold but not forgotten
    1992 1MZFE SW20 MR2 - Sold Supercharged V6 Monster.

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