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Prius Gen2 Traction Battery Experience

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by jdenenberg, Apr 21, 2011.

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  1. cwerdna

    cwerdna Senior Member

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    #21 cwerdna, May 4, 2011
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  2. jdenenberg

    jdenenberg EE Professor

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    #22 jdenenberg, May 4, 2011
  3. specialtee

    specialtee Junior Member

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    I have had my 05 at the dealer with HV battery problems. Voltage would drop and cycle abnormal. The dealer did the recall on the inverter pump and did a scan after a test drive. Said #13 cell was bad. Would cost new $3800 or $1800 used and no warranty. Brought it home and just did make it. It would accelerate without touching the pedal.. I found a used battery out of a 2007 wrecked in front with 42,000 miles for $550.00. I did the install and now the gas engine will not run. I did the disconnect, 12 volt disconnect. I have not reset the codes on OBDII. Is there a reboot procedure or could I have a bad power module (PCM). The replace battery has proper voltage to start and 12 volt battery is up. Any suggestion on the reason gas engine will not power up.

    Thanks Phil. P.S. Should I have kept voltage on the OBDII before disconnecting the 12v battery?
     
    #23 specialtee, Jul 10, 2011
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  4. jdenenberg

    jdenenberg EE Professor

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    Two simple possibilities:

    Fully reset the safety plug (orange) or
    The sense line connector needs to be clicked home (Facing the battery from the rear, it is near the left side. just lift up that flap of the metal cover).

    JeffD
     
    #24 jdenenberg, Jul 11, 2011
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  5. seilerts

    seilerts Battery Curmudgeon

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    Congratulations Phil on your efforts! You are almost done. How many miles on your '05?

    +1 on the orange plug. Improper re-installation is the most common error.

    Removing 12V power for 5 minutes will clear all triangle codes except for ABS/VSC/TRAC.

    So, how about this: disconnect your 12V battery negative. Pull the orange service plug out. Install the orange service as follows: as the plug goes in, the handle will rotate 90 degrees, from horizontal to vertical. After reaching vertical, push the handle downward as far as it will go. Reconnect the 12V battery, and see if the car will start.

    Edit: the picture below shows how the service plug should look when properly installed. Just remember, having the service plug installed when a hybrid battery is out of the car is extremely dangerous!

    [​IMG]
     
    #25 seilerts, Jul 11, 2011
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  6. specialtee

    specialtee Junior Member

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    Thanks for the response. I will try the reset on the orange disconnect plug.
    My 05 has 106,000 but the Dealer would not give in on replacement under warranty, even though I bought two 05 Prius there. This will be the last one purchased from him in Charlottesville, Va. (Brown's Toyota) I have owned Toyota's since they were introduce in the US in 1969. Celicas, Corollas, Tercels, Pick ups. etc. I still have faith in Toyota and quality.

    Wednesday, I will be off and will try again on the reset. One comment was to try to reset the sense line connector near the left side rear, lifting the metal flap cover. Could you explain this for me.

    I appreciate all the help on the Forum and have gotten an education from all the posts...Thanks again, Phil Griffin, in Virginia.
     
    #26 specialtee, Jul 11, 2011
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  7. jdenenberg

    jdenenberg EE Professor

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    Phil,

    Inside the battery cover, near the safety plug, there is a small connector with, if I remember correctly, has two thin gauge wires attached. It can be accessed by bending up the lower left (facing the battery from the rear of your Prius) part of the cover (careful, there be dangerous voltages in there) and check if it is clicked home. You can see the white connector socket that I am describing in Seilerts' battery photo near the battery ECU.

    This loose connector stopped me on the road in Illinois (diagnostic code P3140 subcode 350 - Not shown with my ScanGauge!) and was fixed by Steve at AutoBeYours in southern Indiana (a reset by disconnecting the 12v battery got my Prius going to get to Indiana, Steve only charged me $40 and gave me a nice T-shirt).

    JeffD
     
    #27 jdenenberg, Jul 12, 2011
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