Scan Gauge II - X-Gauge Code - Transmission Fluid Temperature

[gcssat]

Good News,

To those who have a Scan Gauge II, I think I have figured the X-Gauge code to display the transmission fluid temperature. It took quite a bit of research; Scan Gauge's website code did not work accurately/properly. I did some beta testing today, and it looks good. I'd like others to try the code and report back their results.

TXD
07E1221E1C

RXF
0462051E061C

RXD
3010

MTH
000900500020

NAME
TFT

NOTES
Degrees F

The picture shows the car in the off position, completely cooled, and not started in a couple of days. You will note there is a slight variation in the air intake temperature, water temperature, and transmission fluid temperature. I believe these figures are accurate and the differences are immaterial in nature.

Greg

[ceric]

Right on.
I was looking into this. I actually found the codes you listed (exactly the same), but
I did not figure out how to program them.
Could you let me know?
I got into CMNDS. Then, there are memory address, EDIT, SEND, etc?
How does one program TXD/RXF, etc.?

[gcssat]

Right on.
I was looking into this. I actually found the codes you listed (exactly the same), but
I did not figure out how to program them.
Could you let me know?
I got into CMNDS. Then, there are memory address, EDIT, SEND, etc?
How does one program TXD/RXF, etc.?

I included the excerpt from the latest Scan Gauge manual, referencing how to program X-Gauge codes. Does this help or do you need further assistance? Also check to see if you have the latest version (4.06) on your scan gauge.

Greg

[ceric]

Doubt it. Mine was bought in 2008. Haven't updated anything yet.
I will look into it. Thanks a lot.

[HOLOHOLO]

Speaking of OBDII, I have one from my other vehicles. Will it work on the Mazda? Where's the port?

[ceric]

It should work.
The port is under the steering column between you two knees when
you sit in driver's seat.

[HOLOHOLO]

Much Mahalo Ceric!

[ceric]

MTH
000900500020 -> 000900050020?

Greg:
I think your MTH code is not correct, can you double check?

For those interested, I have found six sets of codes that supposedly works for Mazda.
Here I list them all for reference:

TXD RXF RXD MTH
---------------------------------------------------------------------------------------------------
#1) 07E02217B3 0462051706B3 3008 002A0019FFC7
#2) 07E12217B3 0462051706B3 3008 002A0019FFC7 (#1's 0221 -> 1221 in TXD code)
#3) 07E0221E1C 0462051E061C 3010 000900050020
#4) 07E1221E1C 0462051E061C 3010 000900050020 (#3's 0221 -> 1221 in TXD code)
#5) 07E02211BD 04620511061D 3010 000900050020
#6) 07E12211BD 04620511061D 3010 000900050020 (#5's 0221 -> 1221 in TXD code)
----------------------------------------------------------------------------------------------------

Seems to me that #4 works for Greg's (Version 4.06),
but #2 works for mine (Version 3.15)
It shows 121F now (after I drove it 2 hours earlier).
Thanks, Greg, for the info.

Update: temperature range of transmission
Cold: 79F (close to outside temp)
Hot: 123F

[ceric]

Update on the TFT readings.

The temp reading from transmission fluid seems to be tied to the coolant temp.
I think the transmission fluid is routed to the radiator also. Someone confirmed this to me.
Coolant temp stablizes around 193F, while max TFT I have seen is about 210F in N. CA.
In most cases, TFT also stays around 193, synch-ed up with coolant temp.

[gcssat]

Update on the TFT readings.

The temp reading from transmission fluid seems to be tied to the coolant temp.
I think the transmission fluid is routed to the radiator also. Someone confirmed this to me.
Coolant temp stablizes around 193F, while max TFT I have seen is about 210F in N. CA.
In most cases, TFT also stays around 193, synch-ed up with coolant temp.

The transmission cooler is a line that runs inside the bottom of the radiator. It is cooled by the engine coolant. I have seen my transmission temp get up to 208 here is S. Texas, but during periods of climbing or high rpms (passing). Once running normally, the transmission temperature is close to or equal the coolant temperature.