No indication of MPG, MPH nor Odometer

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by CoastieChief, Nov 4, 2014.

  1. CoastieChief

    CoastieChief New Member

    Joined:
    Nov 4, 2014
    8
    1
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    Location:
    Gansevoort, N.Y.
    Vehicle:
    2004 Prius
    Model:
    N/A
    I have no readout of mpg, mph or odometer on my 2004 Prius with over 206k miles. Recently, I replaced the front right brake caliper and bled unit, then attempted to reset both ABS and Brake amber lights by placing a jumper between pins 4 and 13 on 16-pin receptacle under dash (I read this instruction on another Prius Chat Forum). After failing to reset these lights I decided to take car on short test drive to test brakes and failed to remove the jumper wire before driving. I then noticed just 0.0 mpg, 0 mph and odometer remaining on last recorded mileage number. Am fretful I have 'fried' an electronic part but not sure as to what item. Any help to identify this problem would be greatly appreciated. Sitting still in New York.......
     
    #1 CoastieChief, Nov 4, 2014
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,200
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    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    1. Subscribe to techinfo.toyota.com so that you can obtain the electrical wiring diagram (EWD) for your vehicle.
    2. Referring to the diagram, find the OBD-II connector and figure out which pins you actually shorted together. Once you do that, maybe you can figure out what was damaged. For example if you shorted pin 11 to a source of 12VDC, that would damage the combination meter.
    3. Check the fuses which supply power to the combination meter. Pull each fuse out, one at a time, and verify continuity using the ohmmeter function of your digital multimeter. Do not rely upon visual inspection. The fuses are 10A GAUGE, 15A DOME, and 7.5A IGN.
     
    #2 Patrick Wong, Nov 4, 2014
    Last edited: Nov 4, 2014
    dorunron and koolingit like this.
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