odb scanner that monitors Transmission Temperature - Page 3 - Toyota RAV4 Forums
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#21 (permalink) Old 11-02-2009, 05:24 AM
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Quote:
Originally Posted by CharlesG
Perhaps you could consider this unit.

http://www.autoenginuity.com/index.html

It's not as simple or as cheap as the ScanGuage but it does come with an optional Toyota module and one of the code is ATF Temperature.

http://www.autoenginuity.com/product...ware.html#EI03

I have not used this unit.
Can we set the vsc/tcs off through it?

They're strictly my opinion, not a professional advice. Take it at your own risks and please feel free to comment!
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#22 (permalink) Old 06-15-2012, 10:04 PM
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OK, to revisit it 4 years later, has anyone accessed the tranny temp sensor via OBD-2 in RAV4.3?

I just paired my bluetooth ELM327 OBD2 reader with Torque free app on android phone and there is no option for transmission temp. I'm not sure if this is an issue with Torque free or Toyota issue.

Thanks!

Update: My son just downloaded the full featured Torque pro that clearly supports transmission temp by 2 different methods. Both didn't work with RAV4. Any other ideas?
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#23 (permalink) Old 06-16-2012, 12:37 AM
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Wow that makes me wonder if the 4.3 really even has a transmission temp sensor. My 4.2 sure does and it works wonderfully with torque.

On the road in my Rav4 since February, Traveling, Volunteering, Camping and also enjoying beer bikes and bacon. Check out the blog www.servicedriven.org
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#24 (permalink) Old 06-16-2012, 03:08 AM
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Quote:
Originally Posted by friendly_jacek View Post
OK, to revisit it 4 years later, has anyone accessed the tranny temp sensor via OBD-2 in RAV4.3?

I just paired my bluetooth ELM327 OBD2 reader with Torque free app on android phone and there is no option for transmission temp. I'm not sure if this is an issue with Torque free or Toyota issue.

Thanks!

Update: My son just downloaded the full featured Torque pro that clearly supports transmission temp by 2 different methods. Both didn't work with RAV4. Any other ideas?
Can you program Torque to read PID "B4"?

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#25 (permalink) Old 06-16-2012, 02:19 PM
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Quote:
Originally Posted by JuneBug View Post
Can you program Torque to read PID "B4"?
Actually it turns out B4 is not a PID its the equation.

I have the paid version and it reads three different methods for transmission temp, of course I have a different ECU being a 4.2.

Does the 4.3 have a single ECU that does engine and transmission ect, or is there a separate module for the transmission. If it is a separate module it may be a lot harder to get.

I am really surprised you are having trouble reading transmission temp with torque.

Mine just worked and i did not need to do any thing but here is a thread from another forum that may be of use.

Cool Android app and question about Toyota OBDII PIDS - Page 2 - TundraTalk.net - Toyota Tundra Discussion Forum

torque-bhp.com/forums

Its crazy that much of the info out there is hidden and only accessible to toyota techs, as I have heard that even the paid subscription to the Toyota technical data service does not have as much as inside techs are allowed to.

Hopefully some one will eventually reverse engineer it all as most of the services that let you know are bound to nondisclosure where as reverse engineering is not.

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#26 (permalink) Old 06-16-2012, 09:54 PM
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Quote:
Originally Posted by BikerJay View Post
I have the paid version and it reads three different methods for transmission temp, of course I have a different ECU being a 4.2.

Does the 4.3 have a single ECU that does engine and transmission ect, or is there a separate module for the transmission. If it is a separate module it may be a lot harder to get.

I am really surprised you are having trouble reading transmission temp with torque.

Mine just worked and i did not need to do any thing but here is a thread from another forum that may be of use.

Cool Android app and question about Toyota OBDII PIDS - Page 2 - TundraTalk.net - Toyota Tundra Discussion Forum

torque-bhp.com/forums
Weird, I only saw 2 modes for AT temp in the torque (full version).

I also tried the instructions from the other forum, but there is no "other" option under

Quote:
'Manage Extra Sensors/PIDs', press menu->add predefined list, and then choose 'other'
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#27 (permalink) Old 06-16-2012, 09:55 PM
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Quote:
Originally Posted by JuneBug View Post
Can you program Torque to read PID "B4"?
I wouldn't know how to do it. Did you do it with yours?
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#28 (permalink) Old 06-17-2012, 12:44 AM
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Originally Posted by friendly_jacek View Post
I wouldn't know how to do it. Did you do it with yours?
No, the software I'm using on my laptop doesn't allow the adding of PID's unless you shell out another $50 for the professional version.

James
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#29 (permalink) Old 06-21-2012, 01:32 AM
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If you are using the Torque app there is an interesting thread on Torque forums

Forums — » Torque OBD ECU Scanner » Torque Discussion / Ideas » Help with Tacoma transmission tempTorque

The thread addresses monitoring Tacoma transmission temp but appears to apply to my 07 Rav4 as well.

For pre 2010 cars (all equations copied from the thread at the Torque forum)

In Torque enter:

OBD2 Mode and PID:
21d9
Long Name:
Transmission Fluid Temperature 1 (or what you like)
Short Name:
Trans 1
Minimum Value:
0.0
Maximum value:
300.0
Scale factor:
x1
Unit Type:
°F (or alternatively C is you use the second equation below)

Equation:
((((E*256)+F) * (7/100) – 400)/10) – for output in F


or alternatively


(((((E*256)+F) * (7/100) – 400)/10) – 32) * (5/9) – for output in C


OBD Header to use:
left blank

For 2010+ cars (do not own one, so I have not tested this)

OBD2 Mode and PID:
2182 (NOTE DIFFERENT PID for newer Toyotas)
Long Name:
Transmission Fluid Temperature 1
Short Name:
Trans 1
Minimum Value:
0.0
Maximum value:
300.0
Scale factor:
x1
Unit Type:
°F
Equation:
((((A*256)+B) * (7/100) – 400)/10)


you can also convert this equation to C as above



OBD Header to use:
left blank

----

I tested this while driving to work this morning. Seems to work as the temperature started rising from ambient towards 160 F over a period of approx 30 mins. Easy city driving. Have not carried out long-term testing on freeways, towing etc. to verify if this produces consistent and sensible outputs.

The equations measure temperature in the transmission pan.

The thread also discusses measuring transmission temperature at the torque converter outlet (where the temperatures should be consistently a bit higher) - have not tested this either.
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#30 (permalink) Old 06-21-2012, 12:18 PM
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Thanks Legioona, will try it tonight.
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