Temp check mode, OBD missing required pins

I have a 2021 Tacoma I was getting ready to drain and fill the transmission and I noticed the pins I need seem to be missing on the OBD port.

Is there another way to put the vehicle in temp check or am I missing something?

 

20 and newer I believe, have a newer, better, easier way to put into temp check mode. sorry, I do not have a link to help you. Ski

 

https://youtu.be/XTU_Jt7OJZk

 

Or... You can use one of

$140 ANCEL TD700 OBD2 Scanner Fits for Toyota Lexus Scion Engine Car Diagnostic Scan Tool All System Code Reader for Reading/Erasing Code,1996-2021

these

 

Thanks for the info.

It appears to have been under filled from the factory, I drained maybe 2 quarts out of the pan if that.

40k miles on the truck.

 

You don't need to mess with the OBD Port. Just follow the procedure below.

AC60F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSMISSION FLUID: ADJUSTMENT; 2020+ Tacoma
To enter automatic transmission fluid temperature detection mode:
Depress and hold the brake pedal.
Start the engine. [#1]
Turn off electrical and mechanical loads
Slowly move the shift lever from P to S, then move the shift lever to P. (~3 seconds each position [#2]
While observing the D shift indicator on the combination meter, move the shift lever back and forth between N and D at an interval of less than 1.5 seconds for 12 seconds or more. [#3]
Perform #1, #2, & #3 within 60 seconds
Check that the D shift indicator comes on for 2 seconds.
Move the shift lever from N to P.
Release the brake pedal.
Allow the engine to idle until the automatic transmission fluid temperature reaches 35 to 45°C (95 to 113°F). The D shift indicator will come on again when the fluid temperature reaches 35°C (95°F) and will blink when it exceeds 45°C (113°F).
Performing this operation will cause the vehicle to enter fluid temperature detection mode and engine idle speed control mode. In engine idle speed control mode, engine idle speed control starts when the fluid temperature reaches the specified temperature and the engine speed is maintained.

 

I was just trying to figure this out today and low and behold, here is this post. Now that's timing!
Looks like SSMTRDOR did a copy and paste from Toyota TIS. I will attach a copy of that as a print to PDF. Go to the section "(b) When not using the Techstream:".
So, I'm wondering, is the part where you shift from P to S to P even needed? He didn't do that in the vid.

 

Yep! Works like a charm on my 2020. While watching the big D, I had an OBDLink MX+ connected to the OBDII port and was watching the temp. I recorded a range of 97.3 to 115.3 degrees F at 700RPMs. I didn't time how long it lasted, but it was more than enough time for the job.
I wonder what you do if you live in a place like Arazona and your truck has spent half the day sitting in 120-degree heat.

 

Im dealing with that now. I'm wondering how long it takes to cool down

 

I live north of Tucson, AZ. I check the trans oil level being the second thing I do in the AM ..... after the truck is sitting, not running all night ...

when its about coolest during the day.... After coffee ....

Its 103F now and tomorrow AM its suppose to be 85F at 8:00 AM ..

Wait and test then

 

Yeah. I had to park in the garage and wait about 3 hours.... Even then it immediately was in temp check mode (solid D)... Before that it was in overtemp (blinking D).

 

It is my belief that the P to S and then back to P is to make sure all the passageways and valves are full of fluid before doing the level measurement. Necessary with just a "level check" or a simple incremental "drain and fill" probably not, but if you were doing any dropping of the pan and changing of the filter I'd error on the yes - do it. Myself, I will, and do.

According to other threads on this site the transmission does have a filter - I have no specific knowledge in this area, yet.

Edit:
That filter is more often described as a "strainer".

 

What about the trans thermostat valve that sone mention depressing and putting pin threw hole to hold it open . Should that be done on level check no drain or replace of parts just che k . It doesn't mention it anywhere in the file so mixed thoughts on if important or was that not added because specific type 4x4 or with trans cooler

 

At Level check.

 

so I had the thermostat pinned during the initial drain…
Are you saying that I have to have it pinned during the level check and overflow opening?? I know it’s not a lot of fluid but I was wondering if I was a bitnoff

 

It needs to be pinned down during the procedure. Needs to be pinned down prior the engine start.
This is how i do. Also see tundra level check procedure
-check tranny temp (OBDII)
-drain the fluid.
-crack the overfill plug and hand tigh.
-pinned the thermostat
-fill the tranny
- start the level check procedure.
-adjust the level.
-shutdown the engine and unpin the thermostat.