Red Triangle - Replace Hybrid Vehicle Control & Battery Computer Assembly

Possibilities: Bad/loose/cracked connection/sensor wire for block one, corroded sensor wire at the plug or corroded pin at ecu.

 

Id be asking why did two computers fail at the same time..

if you do buy used computers odds are you will have to go back to the dealer and have them flashed then programmed for your car, I dont think they are plug and play..
im not sure what the cost of that will be or if they will even do it, they make their money selling new parts.

 

The 47092 ECU is the one that is installed inside the HV battery pack. 47092, I believe, is the latest revision of the ecu. I have 5 or 6 on the shelf. They require no flashing. Direct plug and play, BUT before I purchased anything, I would check the sensor wires and the sensor harness connector plug and the ecu pins. Block 1 is the 2 modules furthest from the electronics section of the HV battery.

I also have the other ecu on the shelf.

Al said: Id be asking why did two computers fail at the same time.

I agree x2. Odds are slimmmmmmmmmmmm

And if the dealer is telling you that your battery is AOK since voltages look ok, I have nothing good to say about that.
Look at Posts 16 and 17 in this thread if anyone thinks voltages tell the whole story......

Just Another HV Battery Thread and Experiments | PriusChat

 

how many miles on her?

 

I think load testing, is what one can do onboard the car, instead of the dealership, or when you remove the lack, you can do same. Either ways though.

 

You can buy a module here and swap it out.

@TMR-JWAP sells them, or go to Hybrid Automotive and they sell them too.

Glad you got it sorted. Good luck and keep us posted .

 

You're finding the first symptoms of a dying, old battery. Now after repairs to the harness, you'll have some time to determine what your next steps will be. Also check the pin connections at the batt. ECU for any issues as sometimes those arc just like that sensor.

GOOD LUCK!

 

Do you need to buy a new wire?

Maybe a wider picture if the wire is damaged would help.

Your above picture shows significant corrosion. So I would clean everything up, and if module 1 is bad, swap it out, then balance the pack.

Good luck and keep us posted .

 

If you have any soldering skills at all, you can just add a small length of new wire to the old one and put a new lug on it.

 

Often the corrosion is not limited to one site.
It often travels the length of the wore. Somtimes the entire length all the way to the pins on the HV Battery computer plug and even to its circuit board.

It may be a good idea to buy a new HV wire frame.
This will include buss bars and wiring.

 

I was about to suggest the same.

 

Looks pretty standard for an older battery.

The next step would be to remove all of the copper and clean it of the corrosion.

Just make sure to torque everything to 48 inch pounds as the terminals are weak .

Good luck and keep us posted .