tried to fix hybrid battery, this is what happened

Just to throw this out there.....I didn't have time to read every post.

Losing the 12v battery, or disconnecting it causes many things in the ecu to go to a default value. Sometimes, this default value no longer makes sense for where items (like throttle body or maf) may actually be due to normal wear and tear, age, crud buildup, etc. You would not be the first person to not have their prii start after a 12v swap.

Clean the maf and throttle body at a minimum to get them back to semi-original condition so a default value is more likely to match actual condition.

 

You could think of it this way: every part in that whole system has a particular role to play. What's the role of the ECU?

-Chap

 

That’s correct but it also adapts as a car is used. What TMR is saying is you might have parts that are so far out of spec from when they are new that the ECU does not know what to do. It’s practically free to clean those parts, what do you have to lose?

 

If all you did was swap the 12v battery............I'll mention it again......


You would not be the first person to not have their prii start after a 12v swap.

Clean the maf and throttle body at a minimum to get them back to semi-original condition so a default value is more likely to match actual condition.

And I might be hesitant to use brake cleaner for the MAF sensor. They do make MAF cleaner. Just like they make TB cleaner. And a toothbrush can help also for scrubbing deposits on the TB. I would spend the 7 dollars and get the right stuff. Why risk creating more problems.........

 

NO NO NO NO NO

Use MAF cleaner or nothing.

 

The example you showed is just 18 pages copied out of the Repair Manual.

You can access the whole thing at techinfo.toyota.com. And not just the repair manual, but the New Car Features manual (which explains what everything is, why it's there, and how it works, so the Repair Manual makes sense), Quick Technical Guides on all sorts of subjects, Technical Service Bulletins for specific known problems, recalls, service campaigns, and if you want even more depth in anything, the Toyota technician training course materials.

One sign-in makes it all available.

-Chap

 

I hope you find out what is the cause of this problem.

A while back I took a pic of my MAF sensor. Hope this helps for comparison. MAF cleaners are available at just about any auto parts store.

 

Perhaps your local public library provides access to the ChiltonLibrary service, which has the text and illustrations from the Repair Manual, reproduced under license from Toyota, or to a similar database. If you already have a library card, many libraries even allow you to log on to these databases from home.

 

In IMG_0761.JPG, for the Engine and ECT system, the Monitor Status is “Inc,” for incomplete, meaning that at least one readiness monitor in the Engine Control Module hasn’t recorded enough driving, after it was last cleared, to reach a judgment about whether there might be a malfunction. I’d suggest driving the car more, ideally according to the drive pattern given in the Repair Manual for each incomplete monitor, and then checking again for diagnostic trouble codes.

 

That is a really interesting thread, this probably out of the topic but I was wondering if there any small easy modification and not a complicated one I can use to get better use of the battery in general?

2016 Prius V

 

If you are asking for your Prius V you would be better served by asking in the Prius V forum. It’s quite a bit different than a gen 2 Prius.