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Thread: How to test dash lights and gauges

  1. #1
    Join Date
    Jun 2006
    Penis, AZ

    Default How to test dash lights and gauges

    On TJs with the newer diagnostic system, to see the codes you put the key into the ignition, push and hold down the odometer reset button, turn the key to RUN, then release the odometer reset button.

    When you do this you are rewarded with dancing number displays, the firmware version number, any error codes, then a diagnostic test of all the dash indicators and gauges.

    The gauges will, one by one, go through a calibration--the needles moving and stopping at major increments so you can check their alignment with the dial markings
    Zombie Caving
    Siblings are like sausages. Itís better not to see them being made.

  2. #2
    Join Date
    Jun 2006


    We tried this the other night to see what the problem was with my oil pressure gage. We know that the gage works find so the problems has to be something internal.
    "The American Indians found out what happens when
    you don't control immigration."


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