Close
Car Questions
RepairPal is your advocate for car care advice and guidance

HV Battery being drained in about two minutes
Please Help Meeeeeeeeee

(2001 Toyota Prius)
in Omaha, NE on June 15, 2013
I have changed the HV Battery back an forth several times with another Prius I have that's working. Both batteries work fine in the working Prius an I have the same problem with either battery in the problem car.

Today I swapped out the Inverter/converter. I started the engine and the power flow meter was showing fully charged HV Battery. By the time I had moved a few things out of the way for a test drive Probably about 2 minutes running time the engine shuttered an Got the HV Battery problem.

So far I substituted the HV Battery, the Inverter/converter, throttle body, throttle position sensor and running out of parts to change out.

I may try the engine ECM next. I really don't want to because I will have to set up the handshake between the transponder ECU and the engine ECM.

I'm not really wanting to do that if I can come up with other ideas that may work.

I've never set up this handshake before an I think I have to short across the Pin 4 and 13 of the DLC an leave it with the ignition on for 30 minutes.

I'm not finding real clear instructions for this procedure. I downloaded directions from the Toyota web site but they had the pin numbers all labeled wrong

and the instructions were Japanese. Like I got to learn their language to work on this stuff?

If anyone has any ideas for me, believe my I would be so appreciative.

Thanks, Hank
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Started last night, telling me I'm going 65 when I was actually probably at 45. 120 on the freeway when I'm going pr...
When the car is turned on there is a red car with exclamation point and a fan in the back seat gets extremely loud . ...
Didn't find what you were looking for?