Hey Everyone, I am new here and have taking a few days to look at other similar posts, but did not find anything identical to what I have goin on. As per the title, I rebuilt the HV battery w/(tested) Gen II cells on a 2001 that I purchased cheap knowing that the HV was bad. Installed the rebuilt batt, the car started right up, but then shut off about 5-10 seconds later with the "triangle of death". I followed some threads here and have determined that the inverter coolant pump is operating and fluid is moving. Next I checked the 12V battery after a charge and it was 12.8, w/o ignition on. With ignition on, it drops to 11.3, then 11.1 and then slowly limbs back to 11.3 and stays there. From other threads it would seem the DC/DC is bad, but before I dive into a change out I would like a few more opinions. Thanks so much!
Sorry, should have also mentioned that I have disconnected the 12v and charged it a couple times and retried with the same results of starting and then shutting down after 5-10 seconds.
If you are measuring battery voltage while the car is READY, then I would agree that the DC/DC converter is bad. If you are measuring battery voltage while the car is IG-ON (and not READY, hence all dash warning lights are on) then this is just showing you that the 12V battery is being heavily drained while in that operating mode.
Alright, sorry for the delay, but I have the following codes: P3191 [FONT=Arial, Verdana]C1259 [/FONT]P3101 I am using an AutoEnginuity scanner I just received, and am completely new to it so if I need to scan it differently or look for additional codes, please let me know. Thanks so much!
If you have AutoEnginuity scanner then get into the Battery ECU and read out these values. http://priuschat.com/forums/generation-1-prius-discussion/79283-battery-ecu-auto-enginuity.html Record the 18 block voltages and resistances and check the 12V battery voltage when the car is off and when the car is on with headlights going. Also that battery behavior seems normal. When you come back to the car after an hour the 12V battery should be somewhere 12.2 to 12.6. When the display and the car is in ACC with headlights, it will dip into 11V. It's just a slow charge discharge battery. The DC-DC will put it at 13.5-13.9 when the ICE engine is running.
The 12V DC-to-DC converter sounds like it is bad. But the short "run" could be something as simple as a sticky throttle plate. Bob Wilson
