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

It depends on which ECU you 're talking about. HV ECU uses 100 / 255 whereas HV Battery ECU uses 0.5. Don't ask me why.

Vincent

 

It seems like this range is the normal operating range and not the min. & max. There is another range reported under DTC P0A9B.

	Column 1	Column 2
0	Temperature Displayed	Malfunction
1	-45 ºC (-49 ºF) or less	Open or +B short circuit
2	95 ºC (203 ºF) or more	GND short circuit

If the car has been parked overnight, the Battery Temp. should be close to Ambient Temp.

Vincent

 

Alternative... ?

As corrected by usbseawolf2000 in the post 45 below the following apps (below) doesn't offer ability to add custom PIDs to show Hybrid specific information.

Poorer and more expensive ''Android'' App's here: https://market.android.com/details?id=com.palmerperformance.DashCommand&feature=search_result

Poorer and more expensive ''iPhone'' App here: Rev for iPhone, iPod touch, and iPad on the iTunes App Store

Software above would still need one of the following hardware:



1) Kiwi WiFi (USA) ($99)
-or-
2) OBDKey WLAN (EU/UK)
-or-
3) ElmCanII-WLAN (EU/Germany)

Features (Rev App for iPhone):

DevToaster - Rev - iPhone app development, Great iPhone apps, and more

Some of these software can download 'lite' or trial version to test what features, functionalities works with your vehicles.

I personally don't own any of these. These are just alternatives to ScanGauges offering visual display using your mobile phone handsets (either Android based i.e. samsung galaxy or iphone app using iphone's).

 

iPhone OS and Android running on IPhone: ‪Android running on iPhone‬‏ - YouTube

cool

 

I was waiting for you to do it.

Last I checked the scaling factor seems to be at least 2. The new formula has a scaling factor of 256*234/65535 = 0.914, which is less than half of what I estimated from blC and buC. So I don't think it's going to work well for us unfortunately.

 

Are you saying Torque can not process passive messages? If so that is odd. Maybe you could convince the author to add that functionality - should be straightforward (more or less copy and paste).

From this graph

which I originally posted here:
http://priuschat.com/forums/gen-ii-...lets-backside-engine-block-4.html#post1362739
It looks like the blC and buC are 1C above the OAT after parking the car all day during work hours - close enough to being equilibrated.

 

If you 're consistently getting 5 ~ 6 ºF higher than OAT, we need to relook at the offset. The offset is determined by the min. Temp. During malfunction, the Temp. can be -49 ºF or less. We don't know how much lower than -49 ºF but usually for temp. measurement, -40 and -58 ºF are commonly used.

In this case, we can try the range from -58 to 203 ºF:

(261 * 256 / 65535 * K) + (261 / 65535 * L) - 58

Vincent

 

bonjour,
Regarding temperatures, the original values are in °C;
to get the value in °F you convert easily with the formula :
val°F= 1.8 * val°C + 32
so for instance in line 17 from your spreadsheet
you write: 1.8 * Y
in fact the value in °C is : Y - 40
so to get °F you should write:
1.8 * (Y - 40) + 32
1.8 * Y - 72 + 32
1.8 * Y - 40
this formula applies to lines 18 19 20 41
for the lines 86 93 94 95 decimals are useless and you can use the same formula using A K M O (forgetting B L N P)

I am curious to know if it solves your problem.

Regarding passive PID, torque does not use them and will never use them because of the speed limit of the BT interface.
it is necessary to use a fast link (500kbps) to scan the full trafic.
(or use masks and filters and it is very tricky to manage and you get a very poor refresh rate).

 

OK, I found the min. & max. temp.

http://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/05/20zmw/cidlitac.pdf

	Column 1	Column 2	Column 3	Column 4	Column 5
0	Hand-held Tester Display	Measurement Item/Range (Display)	Reference Range	Diagnostic Note
1	BATT TEMP 1 to 3	Temperature of HV battery/ Min.:-327.68°C	Max.:327.67°C	Undisturbed for 1 day: Same as ambient air temperature	-

Batt Temp (°C) = (2.56 * K) + (0.01 * L) - 327.68

Batt Temp (°F) = (256 * 9 / 500) * K + (9 / 500) * L - 557.824

Vincent

 

Thanks very much! I think this will work.

:doh: This is the same formula as for the 14 module voltages. Why didn't I think of that!

 

If you shift to [N], do you get 0 Nm for both torque? Once you get the offset correct, you can then figure out the scaling.

Vincent