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Thread: N/a jza80 5 speed supra fault codes, need help calling all toyota guru's

  1. #1
    Forum Member 1st year Apprentice
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    Default N/a jza80 5 speed supra fault codes, need help calling all toyota guru's

    posted this in general discussions accidentally, sorry guys!


    Hi everyone calling on all JZA80 GURU'S HERE!!!


    I recently bought a n/a Jza80 5 speed 1993 model. it went great until one of my friends while talking was fiddling around and unplugged the plug that connects into my brake booster. I of course did'nt know until the next day when I start the car up and the 'MASTER WARNING LIGHT" stays on as well as my Handbrake Warning light.

    after connecting the plug back into the brake booster I found it didn’t switch any of the dash lights off…. SO

    ANOTHER INTERESTING THING is when I am driving and I get the revs of the car up around the 4000rpm mark, both of the lights on the dash turn off until I take the foot off the accelerator pedal again THEN they come back on. can anyone answer why the car would do this?


    is there a way to manually clear the fault codes and thus switch the lights off for good?

    or will an OBD SCANNER be able to clear it ?

  2. #2
    Cressidaspert Carport Converter andrew_mx83's Avatar
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    Default Re: N/a jza80 5 speed supra fault codes, need help calling all toyota guru's

    Quote Originally Posted by nick#07 View Post
    is there a way to manually clear the fault codes and thus switch the lights off for good?
    disconnect the battery or pull the efi fuse for half an hour
    There is no substitute for PUBIC inches

    Never late in an x8

  3. #3
    Junior Member Automotive Encyclopaedia
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    Default Re: N/a jza80 5 speed supra fault codes, need help calling all toyota guru's

    Make sure door is closed as I think this keeps master warning light on
    Then drive it abit
    How is the Burke fluid level. Also check if inside of master cyl lid hasn't dropped down

    U might have to erase the abs ecu codes
    Search for how on google
    U need to connect two wires then earth each one separate times
    It's fiddly and might take a few goes
    I've done it afew times with success so it's not too hard
    This proceduremisnonly way to erase abs codes
    Or maybe try removing battery at night press on brakes afew times to diminish
    Residule power
    Then leave battery off over night

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