1998 - 2003 Prius Transaxle - P111 Quick Look
The Evolution of the Prius Transaxle - A Quick Look at the basic operation of the P111 transaxle. This transaxle was used in the first generation Prius sold in the U.S.A in the 2001-2003 model years.
0:00 Start
2:10 Counter Driven Gear
2:55 Counter Drive Gear, Sprockets, and Drive Chain
5:33 Final Drive Ring Gear and Differential
6:50 MG1 and the PSD Sun Gear
7:33 Flywheel/Clutch and the Planet Carrier
12:09 MG2 and the Internal Gear
14:35 Overall Single Axis Operation
15:30 Oil Pump Drive Shaft
16:15 The Function of MG2
17:00 The Function of MG1
17:14 The Function of the Internal Combustion Engine (ICE)
Weber State University (WSU) - Department of Automotive Technology - Transmission Lab.
This video covers the basic operation of the Toyota P111 2CM Hybrid Transaxle. For a more detailed look at the operation of the P111 transaxle, see my other video: First Generation Prius Transaxle - P111 Deep Dive here • 1998 - 2003 Prius Tran...
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This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
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Пікірлер: 57
it is very difficult to say thank you in words for quality stuff you put on you tube but yet i would stiil say your videos are master piece for understanding the systems of automotive. thank you very much.
@WeberAuto
7 жыл бұрын
Thank you!
Nice vid; in fact I have viewed a few now and all have been very informative, enjoyable and academic. Keep it up. Thank you sir.
@WeberAuto
7 жыл бұрын
Thank you!
Thank you for another excellent episode. I think I will purchase a complete used transaxle to further my understanding of this fascinating technology. Your videos will be a great aid in this regard.
@WeberAuto
7 жыл бұрын
Thank you! it really helped my understanding to go inside the transaxle.
These series gen1, gen2, gen3 and gen4 are great. Thank you doing these! Greetings from Finland!
@WeberAuto
6 жыл бұрын
Thank you!
Its interesting to see the different generations over the years, thank you!
@WeberAuto
6 жыл бұрын
Thank you! It was fun to explore all of those transaxles
@WeberAuto. I find this fascinating. I'm not a mechanic but I'll watch your videos from beginning to end because they make me appreciate the engineering that was put into this vehicle. Can't wait to save money towards a used 2nd gen.
@WeberAuto
5 жыл бұрын
Thank you!
Watching your videos makes me feel I'm taking automotive classes :3
@WeberAuto
7 жыл бұрын
Thank you, I am an automotive Professor.
enjoyed every minute of the video
@WeberAuto
7 жыл бұрын
Thank you!
Thanks for this, it really helps me understand how it's possible to propel a vehicle with the Toyota hybrid system. Looking forward to see the newest one to understand the evolution of this system.
@WeberAuto
7 жыл бұрын
Thank you very much!
I've got 2 Dodge Hellcats. I always look out for Prius cars. They are modern marvels! Thx!
@WeberAuto
5 жыл бұрын
Thanks for your feedback!
Nice series & video John
@WeberAuto
7 жыл бұрын
Thank you!
Go Weber! Watching these videos is more fun than betting Weber in Hoops in the NCAA tourneys in March! You are my pick if your make the tourney this year, no matter who you play! :
@WeberAuto
5 жыл бұрын
Thank you very much
very positive lesson! thank you!!!
@WeberAuto
7 жыл бұрын
Thank you!
Thanks a lot Prof
@WeberAuto
3 жыл бұрын
You are welcome
greetings from Türkiye followed your work with interest. Success and happiness
Hi John Would be interested to know if the 2002 Prius still has the original traction battery? There's differing opinions on how long they last! Best explanation of the operation of the Prius Hybrid I've come across.Cheers
@WeberAuto
7 жыл бұрын
Hi, yes it does. It only has 149k miles on it. It was a State vehicle in Montana for a long time. I have been involved in a few battery replacements, they lasted about 160k miles and approximately 10 years.
Thanks for the great video. Are these units generally regarded as reliable, and if not, where are the trouble areas?
@WeberAuto
7 жыл бұрын
Yes, as long as the scheduled maintenance is followed. Thanks for watching.
Nice !
@WeberAuto
7 жыл бұрын
Thank you!
What happened to the classroom lecture video on this transaxle?
thanks for this video! I've got one of these transaxles in my car and I'm really glad I have a better idea of how it works and what I can attribute to serious problems and what is just normal problems with a 15 year old hybrid. (Basically I'm getting low MPG and no assistance from the battery and a constantly running engine in my '03, this let me realize my transaxle is probably less damaged than I thought still because almost every function you described here is still flawless. My main question is whether the parking brake system being less effective is probably due to transaxle wear or some other more replaceable point?
@WeberAuto
6 жыл бұрын
Thank you! The parking brake system has nothing to do with the transaxle. It is related to the rear drum brake system. Best wishes!
@damienhill6383
Жыл бұрын
New battery needed ...
greetings from Egypt .
@WeberAuto
7 жыл бұрын
Greetings!
Thank you for your videos! I just took apart Gen 1 and Gen 2 Prius batteries yesterday. The Gen 2 modules are healthy enough and will be put to use, but the Gen 1 cells are stone dead. Would you like to have the Gen 1 battery for display/poking at? I am somewhat local.
@WeberAuto
6 жыл бұрын
Thank you! Yes, that would be greatly appreciated!
@ElectricNed
6 жыл бұрын
WeberAuto I will likely be up in at least the SLC area in two weeks or so. What's the best way to get in touch?
@WeberAuto
6 жыл бұрын
Please email me at jkelly1@weber.edu and I will give you my contact information. Thanks again.
Hello sir i have question? I have 2012 lexus ct200 smiler engine as 3rd generation prius. I bought that car from auction and got that fixed which had just front body parts damage nothing to engine or any electrical damage. After fixing that car or even before the car used to start and just after 1 mints it cuts out and fault comes on screen Hybrid system fault. What would you suggest? It starts and moves a little bit then cuts out.
@WeberAuto
5 жыл бұрын
Check for DTCs with a Toyota scan tool
I forgot the Prius used to look like that...
@WeberAuto
7 жыл бұрын
You could be next to one in traffic and not even know it was a Prius.
@Trades46
7 жыл бұрын
The fact the gen.1 Prius was a sedan seem to be a surprise to most folks. However the Kammback hatch did promise better efficiency which is the name of the game, so it is not a surprise why this is no longer done.
@WeberAuto
7 жыл бұрын
Thank you for your feedback!
We can call this transmission counter shaft transmission or it's different than it
Can you put bigger battery pack 1 generation 1
@WeberAuto
5 жыл бұрын
No, the system is set up to monitor only that size of battery.
To say that MG2 provides the power to drive the vehicle down the road is not accurate. The gasoline engine drives the wheels. The job of MG1 is to put variable drag on the planetary gear set so as to control the ratio between the engine and the wheels. A by-product of this is electrical energy which is used to charge the battery and/or provide power to MG2. MG2 is also used for regenerative braking. Since the Honda systems lack a motor/generator geared directly to the wheels they are only considered a partial hybrid lacking the key feature of regenerative braking. I presume that to provide an overdrive ratio, MG1 must spin faster than the gasoline engine and to do this it must draw power from MG2. Similarly, when in reverse, MG1 must drive in the opposite direction and again draw power from MG2 to accomplish this.
@WeberAuto
5 жыл бұрын
Thanks for your feedback. I meant to say that MG2 is the only motor directly connected to the final drive gear. Yes, the ICE and MG1 contribute torque to help propel the vehicle, but only through the ring gear attached to MG2.
@henrikidarmyren9712
4 жыл бұрын
@@WeberAuto When the gasoline engine start it sounds like it goes with CVT with hig RPM. I guess this is the reason ? Hve you planed to see closer on Mitsubishi Outlander PHEV transmision, i wonder if that is an simular construction ? ( i dont know about that model goes in your country ?)