Gen2 Prius: Custom PIDs for Torque (Android App) with formulas

what i read is that dealta SOC is :
when the prius wants a SOC of 60% but its unable do to so and deviates from the wanted 60% more then 20% its bad
so if prius wants 60% but its at 30% and unable to bring it closer to 60% ( within the 20% range from the prius 60% ) then it wil set a code and you have a bad battery

if you prius wants 60% and it gets up to 50% then its a delta soc of 10% and thats stil good.

 

No.

It is CELL SoC Delta.

Carolyn @ Luscious Garage posted a nice picture.

Luscious Garage | Blog | High Voltage Battery Test - Prius Hybrid et al.

 

Question about the MG1 and MG2 temperatures:

Are the equations assigned to the correct description?

If you look at the equations for MG gate status, MG torques, and MG RPM, you will find that MG2 comes first in the reply and MG1 comes second. For example:
MG2 RPM = ( ( 256 * A ) + B ) - 16383
MG1 RPM = ( ( 256 * G ) + H ) - 16383
I know the RPM values are right because they match what you would expect when driving.

However for the MG temperatures our spreadsheets list:
Motor Temperature No2 | MG1 Temp | 1.8 * AA - 58
Motor Temperature No1 | MG2 Temp | 1.8 * AB - 58

MG1 Inverter Temperature | MG1 Inv Temp | 1.8 * Y - 58
MG2 Inverter Temperature | MG2 Inv Temp | 1.8 * Z - 58

Are the MG's really switched, or could this be a typo from the scangauge that got carried over? Has anybody verified that the MG temperatures are correctly assigned?

Why do I care? I am trying to diagnose a problem that requires me to look at the MG temperatures. One of them ( AB ) is 50-70C hotter than the other. If MG1 is warmer I likely need a wheel bearing replacement ($$$), if MG2 is warmer I probably have a winding failure ($$$$).

 

I suppose you have checked the obvious, that the inverter cooling pump is running, and that the case has the appropriate level of reasonably clean ATF WS?

Don't use a computer to diagnose a wheel bearing. Jack up the front of the car and see if the wheels turn freely, and that there is no axial wobble that would be the hallmark of a bad bearing. You can also inspect the axle seals in the process.

 

No, it is not a typo, I actually corrected the error in this post. The Repair Manual refers Motor 2 as Transaxle and Motor 1 as MG2.

Was the temperature difference during first start in the morning or after driving?

Another way to confirm if it is MG2 is to temporary disconnect the temperature sensors to measure the resistance. Pls refer to this guide on 21-14 (Pg 358). Compare the resistance of C1-C4 (MG2) against C3-C6 (MG1). Both should be roughly the same after you parked overnight. If there are big differences, it could be sensor faulty.

Next, just connect back MG1 temp. sensor and leave MG2 temp. sensor disconnected and power on car. You should get DTC P0A2D/249 and MG2 temp. should read -58F in Torque. The DTC can be cleared by Torque later.

Vincent

 

where do you read its cell delta soc? and not the total pack delta soc
the link that I already posted before does not tell me cell delta soc?

 

Thanks for doing all the hard work to maintain and verify the Torque extended PIDs. They have been immensely valuable for both improving regular driving and diagnosing this problem.

After sitting overnight, both MGs report the same temperature. I haven't driven the car since I saw the >50C delta because, with the knowledge that MG2 was running so hot, it was clear that I have a bad winding. I'm getting quotes on swapping out the transaxle; the next time I drive it will be to a shop.

 

My 2005 Prius has 157k miles on it so far. Aside from accident repairs and free pump recalls this will be its first major work. Sure beats the $300/month repair bills that our '94 Taurus was demanding by '99.

If you are curious there is far more detail about the problem on this thread: http://priuschat.com/forums/gen-ii-...ne-speed-red-triangle-vsc-warning-lights.html
I'll post updates there.

 

Hi USB,
Quick question: I read on PLX website that KiWi has a power switch. Do you need to turn this power switch off? I'm afraid the Kiwi might drain the battery.

Thanks!

 

If I'm going to have my Prius sit more than 3 days I shut off the SKS and pull the plug for the Kiwi out of the OBDII port (I have the unit hidden in the center kick plate). I need an Optima battery as my OEM is on borrowed time.

 

You should have no problems leaving the kiwi on at all times. I had the kiwi plugged in with two cell phone chargers, gps, and radar detector plugged into ciggerette lighters (no mods on cigerette lighters) also SKS was on. Parked in parking garage at tampa fl airport for 9 days and it started up no problem. I bought the car used 2 years ago and havent replaced the battery so im assuming its oem, but could be wrong. On another note, can someone look at my layout... am i missing anything really important (the gps sat is there bc my gps in my transformer prime is non existant for 99% of the time so i thought i would put that there to see how bad it really sucked)? am i using the right profile info? is there a way to change the values of the meters like my HV SOC should only go to 100% right not 160 or can you not change that? if anyone would like to share some tips or what numbers they are shooting for that would be AWESOME!!
Engine Displacement: 1.4 l
Weight: 1400 KG
Boost Adjustment: 0
Max Dial RPM: 7000
Volumetric Efficiency %: 51.0 (This is the gen3 value. What is the gen2 value?)
btw for people with tablets all you need to do is make the extendedpids folder in .torque then add the .csv. I could find the .torque folder but there wasnt an extendedpids folder in it so i just created the folder and copied the csv over.



ps. A HUGE THANK YOU to usbseawolf2000 and everyone that contributed to putting this together. Keep up the good work!

 

i took the screenshot by holding the recent apps button. if you look at the pic you can see the button being pushed. im running ice cream sandwich on my prime so i dont know if the screenshot is a ics feature or a feature of the prime but if you hold the recent app itll take it. but its good to hear that i got the bulk of it on screen. after i learn a few things ill probably split the screens up and have all large icons. lol theres alot going on that one screen.

 

"That means the gas engine power to the wheels would be near 100% mechanical.... "

How can the car move without any breaking force of MG1?

 

And that will be called driving by instrumentation

 

One issue with the MG torque readings is that the resolution is too coarse. So a small non-zero torque value would show up as zero. For example when I glide the torque readings almost always show zero even though there are some HV currents flowing.