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Torque » Torque OBD ECU Scanner » Torque Discussion / Ideas » 2013 Land Cruiser ATF Temp

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Author	Topic: 2013 Land Cruiser ATF Temp

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: May 31, 2013 (GMT)

It makes sense that the high order byte (E)
would change less quickly than the two byte response.

Can you tell me how the numbers looked cold?

The two byte formula was based on 28°C / 100° C.

Based on

Variable E F G H
44 C0 44 C0 @ 28°C

72 60 72 60 @ 73°C

Equation

(((E*256)+F)*0.00386)-40.0
(((G*256)+H)*0.00386)-40.0

Could you also try this one for me as well…

(((E*256)+F)*(7/100)-400)/10 Units °F

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 2, 2013 (GMT)

Am getting the scangauge tomorrow. Will try your suggestions and record both so you’d come up with a spot on formula

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 11, 2013 (GMT)

My friend with the scangauge is still out of town so no luck so far.. next week.

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: June 11, 2013 (GMT)

Thanks for the update

Edit:

I think you will find E&F are for the pan and
G&H are for the outlet.

Hopefully all three equations are yielding
similar results.

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 21, 2013 (GMT)

Finally got my hands on scangauge.

Happy to announce:

E-40 Pan (centigrade)
G-40 Outlet (centigrade)

Pan is usually 5-10 degrees centigrade less than the outlet during driving.

Accurate within 1 degree of scangauge.

I think if we take F & H into consideration, we will eliminate the small discrepancy with scangauge.

I will have another run today to take readings so we come up with a dead on formula..

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: June 21, 2013 (GMT)

That’s great news! Thanks again for sharing
your results. You are helping greatly in my
understanding of sg codes.

Needless to say, I am very interested in the
last equation’s results (…/10) as this is my
attempt at understanding the code definition.

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 21, 2013 (GMT)

Which equation(s) do you want tested?

edit

I tested the ..400../10 results in negative..

do you want actual readings for different temps?

28 degrees on e-40 is -56 your formula

etc.?

Let me know what will help you.. enjoying this

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: June 21, 2013 (GMT)

Could you also try this one for me as well…

(((E*256)+F)*(7/100)-400)/10 Units °F

Note the change in units.

(The ° symbol may be required. There used
to be a problem without it. Dont know if
it was fixed).

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: June 21, 2013 (GMT)

So sorry.. i must be typing over you.

If you collect temps and the raw hex data
i might be able to reverse engineer the
code to get the correct value.

I would need both bytes for the
math (E&F).

I really thought that this equation worked.
I used it to get the 73°C for my slope/int.
equation.

Edit:

E – 40 = 28
E = 68

((68 * 256) + 128) = 17536
17536 * (7/100) = 1227.52
1227.52 – 400 = 827.52
827.52 / 10 = 82.752

28°C = 82.4°F

Since I didnt know F I split
the difference (128).

This looks like a paren ()
issue.

Try adding ( to the beginning
and ) before the -400.

((((E*256)+F)*(7/100))-400)/10 Units °F

*/ in my programming days
used to take precedence over
+-. However… not sure how
this equation parser is handling
it.

(Tried the original equation without the
additional ()’s in Excel and the result
was correct!)

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 22, 2013 (GMT)

Must be paranthesis the 400 was wrongly subtracted.. Tried it on excel as well and looks like working. Maybe I entered it wrongly on Torque.

will try today and let you know.

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 22, 2013 (GMT)

Cap777 your equation was tested and is good.

One thing bothering me though:

On the E-40 or G-40 formula I would get for example a temp of 71

On the /10 formula I would get anywhere from 70.6 to 70.9

Which is OK, if you consider we are approximating.

However, the E or G bytes should then read 70 and not 71.. since most of the decimal fraction would be on the F and H bytes?

Sometimes I do get the same readings, using both formulas. Obviously when the temp is on the dot.

Am I missing something?

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: June 22, 2013 (GMT)

Im thinking its due to the *256 magnitude
and rounding. (precision of floating point numbers).
Assuming you’ve created (2) pids to test… it could
also be the value at the time of the pid update scan.

Thanks for figuring this out.

A BIG THANKS!

For clarity… can you post the final version of the
equation that was successful for others that
read this thread.

Mohy

Member
Posts: 31

Re: 2013 Land Cruiser ATF Temp
on: June 22, 2013 (GMT)

Capp777, thanks for your invaluable guidance. Here goes:

Tested on Land Cruiser 200 V8 TTD, MY 2010 and 2013.

Automatic Transmission Fluid Temperature:

Pan:

Mode & PID: 21D9
Equation Celcius: ((((((E*256)+F)*(7/100))-400)/10)-32)*5/9)
Equation Fahrenheit: ((((E*256)+F)*(7/100))-400)/10)
OBD Header: 7E1

Outlet:

Mode & PID: 21D9
Equation Celcius: ((((((G*256)+H)*(7/100))-400)/10)-32)*5/9)
Equation Fahrenheit: ((((G*256)+H)*(7/100))-400)/10)
OBD Header: 7E1

Also works within 1 degree accuracy from above equation:

Pan:

Mode & PID: 21D9
Equation Celcius: E-40
Equation Fahrenheit: ((E-40)* 9/5) + 32
OBD Header: 7E1

Outlet:

Mode & PID: 21D9
Equation Celcius: G-40
Equation Fahrenheit: ((G-40)* 9/5) + 32
OBD Header: 7E1

damdifino

Member
Posts: 7

Re: 2013 Land Cruiser ATF Temp
on: February 2, 2014 (GMT)

Howdy from Texas everyone! I, too, have been trying to get TFT on Torque Pro. So far, none of the above has worked. I have the cheap translucent blue ELM327 off Amazon for 11.99. It’s sending signal, because the default gauges are working. My LC is the American 200 series version 5.7L gasser, 2009.

I’ve googled myself into a fugue state trying to unwrap this mystery. All the custom PIDs I’ve found return the dreaded “no data.” My tranny is the 6 speed auto, but I don’t know its model number. Are the PIDs model/year/engine specific? Could it be that my ELM327 is partially functioning but not sending the TFT signal? Any help–even encouragement–gladly accepted. Thx.

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: February 2, 2014 (GMT)

Did you get a test response when you
tested the pids above… can you post
it if you did?

The pids can change for different models and
years.

Dont forget to test the 2182 pid too… it was
mentioned at the beginning of this thread.

Edit:

This link may help as well…

http://torque-bhp.com/forums/?wpforumaction=viewtopic&t=3835.0

riyhen

Member
Posts: 3

Re: 2013 Land Cruiser ATF Temp
on: February 3, 2014 (GMT)

I have the LC200 2013 model with the 3ur-fe 5.7 engine and the 6 speed automatic transmission ab60f.
what worked for me is the following:

pan temp (in Celsius):

pid : 2182
min : -40
max : 215
scale : x1
unit : c
equation : (((A*256)+B)/256)-40
header :

for converter (in Celsius):

pid : 2182
min : -40
max : 215
scale : x1
unit : c
equation : (((C*256)+D)/256)-40
header :

hope this helps.

riyhen

Member
Posts: 3

Re: 2013 Land Cruiser ATF Temp
on: February 3, 2014 (GMT)

does any body know the engine oil temp pid and the engine oil pressure pid for the LC200 2013?
i know its there becuase there is an oil pressure guage in the dash but its analog!

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: February 3, 2014 (GMT)

Thanks for sharing!

Your equations are basically looking
at the high order byte like the posts
in the beginning of this thread… except
the earlier post converted to °F.

The /256 gets the value back to the
high order byte.

damdifino

Member
Posts: 7

Re: 2013 Land Cruiser ATF Temp
on: February 3, 2014 (GMT)

Quote from Capp777 on February 2, 2014
Did you get a test response when you
tested the pids above… can you post
it if you did?

I’ve gotten no gauge response at all for any of the 8-10 formulas I’ve plugged in, except for one from the “Other” list called “Transmission Temp (Method 3)” which yields what appears to be coolant temp in Celsius. I need to start taking notes as I’m beginning to forget which formulas I’ve entered. I confess I don’t understand the bits and bytes, but I can plug the numbers in…

Since I’m towing about 7,000 lbs, tranny temp is really important to me. Also engine oil temp, so I can monitor the delta between it and coolant temp.

Capp777

Member
Posts: 2993

Re: 2013 Land Cruiser ATF Temp
on: February 3, 2014 (GMT)

Have you tried 2182 with a blank header?
(Though I believe it works with 2010+)

The link to another thread above was for a
2007 Toyota which used 21D9 but with
different variables and a blank header.

Can you post the raw hex test response data
for 21D9 with a blank header?

Possible headers to try: 7E0, 7E1, Auto or Blank.

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