Prius engine does not drive

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Sound like the 12v battery could be fine, but you can use a voltmeter at the jump points under the hood on the drivers side.

Most likely the HV battery has given up the ghost from sitting for so long. Do you have any OBD2 codes (DTCs) you can share with us?

 

try and disconnect the 12v battery for about 10 seconds to reset the car. Reconnect and see if the car starts.

If you're able to start it, shut it down afterwards and try to start it again. If on the 2nd try it won't start, then you have a bigger problem to sort out and it could get expensive.

 

Check the P CON MAIN fuse which is in the engine room relay block. By check I mean remove the fuse and use an ohmmeter to check it for continuity. It should be 1 Ω or less.



I would check also that there is 12 V on the power side of the fuse holder too.

If that is ok, the other trouble areas are:

• Transmission control ECU
• Wire harness or connector (Transmission Control ECU <–> P Con Main Fuse)

 

@dolj do you know what "P CON" stands for? I did try googling.

Maybe Power CONstant?

 

The fuse protects the main 12 V supply to the Transmission Control ECU, so Power Control - Main would be my guess.

 

Here is the workup for DTC C2310 : https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Repair%20Manual/04pruisr/05/21age/cic2310.pdf

Some find vehicle diagnosis less challenging by using a hybrid compatible OBD2 scanner, here are a couple of options below:

Many here prefer using a "mini-vci" cable and a copy of techstream (same software the dealer uses) on a windows device with a USB port.

Others use an wifi or bluetooth OBD2 adapter and an App like Dr Prius or Hybrid Assistant, before buying a device read this : Hybrid battery diagnostic and repair tool for Toyota and Lexus

Once you know the codes (DTCs), please post them here for further assistance.

 

The 12v battery in a Gen 2 will typically be dead after sitting 2 months due to normal parasitic losses. Depending on hte condition of the 12v battery, you can extend that time by disabling the SKS system using the button under the steering wheel. Sitting for a year guarantees it will be dead.

The typical 144k mile Gen 2 with the original HV battery that sits for a year will have at least one self drained module. Most likely, it will have 3 or more drained modules from sitting so long. So in a word, shot.

And NO, a Gen 2 Prius will NOT run fine with a coded out HV battery. The HV battery is what cranks over the engine so it can start. The 12v battery only powers the electronics and lights.

 

A Prius cannot even start if the HV battery is dead or drained too far. Perhaps you confused this with a Honda IMA hybrid, which can run with a dead traction battery?

 

It would be a shame to just have it crushed, but parting out a car is not as easy as you'd think if you haven't done it before or have clean, dry space to store the parts or car. But you could always sell it to a wrecker/dismantler.

Assuming these parts are in good condition (mechanically and/or cosmetically) a list of parts you could target (and others feel free to add to it):

• ICE
• Transaxle
• ABS accumulator/actuator
• radiator
• cooling fans
• A/C system parts
• Inverter
• wiring harnesses
• unblemished body panels
• any plastic part in good condition
• headlight assemblies
• rear light assemblies
• all ECUs (there are 11-14 of these, depending on the package #)
• Interior parts and trim
• glass
• parts of the HV (hybrid vehicle) battery should be saleable, even maybe some of the modules
• HV battery cooling ducts
• HV battery cooling fan
• wheels
• tires
• spare wheel and tire
• Fuel tank and related emission control parts
• exhaust, including the catalytic converters

There are probably more items, but harvesting, marketing, and finally selling could take a while. Once the car is stripped down to the metal you could sell that for scrap.

I don't know how practical it will be for you, but that is my thoughts off the top of my head. Further comment both for and against is welcome.

Good luck with whichever way this goes.

 

Let me get this straight.
You have a 16 year old Prius.
And 1st...

Then...

I wouldn't be frustrated, what else would you expect?
Prius sitting for over a year...aren't going to do well, and especially so if it's 16 years old.
Especially if it has shown the Triangle. -Which is the cars way of saying...I have a problem.

What do you want from this car?
I'd speculate it probably IS the hybrid battery dying.
But whatever you might find or invest into getting it going again, if it's not going to be driven for periods up to a year, you're frustration will just continue.

16 years old, and with potentially a lot of problems diagnosed and un-diagnosed, I would probably want to end my relationship with the vehicle.
The vehicle wasn't moving for a year, and now, I think it's time you move on.

 

Toyota Prius code P3030 “High Voltage Line Snapped” - Luscious Garage | Hybrid Specialists

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