At transmission oil light test mode

Hi fellas, got a question about the diy thread DIY: Full Flush for Automatic Transmission on flushing the AT transmission fluid and then checking the level after setting the AT oil light on the TACH dash light. The instructions are to jumper the OBDII plug #4 to #13 and then start the truck, shift from P to N to D then back 3 times and the AT oil light test mode should come on for 2 seconds and then go out and then come on again for 2 secounds when you put the truck in P PARK and go out. then idle for a while until the light comes back ON steady and that's when you check the tranny fluid level. WELL when I did mine the light stays on all the time after I put it in park at the end and i know the tranny fluid is not in the correct temperature to do a level check yet..........what did I miss here? has anybody seen this before?

2005 Prerunner 2w drive, 4.0 v6 TRD

 

Sometimes you just have to keep trying. I got it on the first go the first time I did mine but it took a few tries to get the light right the second time.

 

well mine came on but mine stays on all the time after the sixth shift , that's what has me confused here. I'll keep trying a few times more. Does the ambient temperature have to be below 86 degrees? does that matter? Somewhere I read about the outside temp. being a certain degrees.

 

Depending on where you are the oil may be pretty close to the correct temperature before you even start. I think in the write-up he said he changed his on a day that was 56F. I changed mine a couple of days ago and my oil had been sitting on the driveway on a 100+ deg day. The write-up says that the temp has to be between 115 and 130 F.

When I tried to get it into the AT Temp mode before changing anything I had no problem and when I changed the oil it it blinked once and then stayed solid immediately after.

As soon as I drained out the excess is started blinking constantly (means over 130). Probably took less than 4 minutes to get above 130.

 

Hey thanks for reply's fellas, My truck was parked in the garage over 17 hours since the last time used though. Could the tranny fluid stay hot over 115 degrees that long? And the outside temperature here is high 70' at night and 90' in the daytime, I know weird texas weather. I'll try again this morning to see what results I get..........

 

***UPDATE; I THINK I FINALLY GOT IT TO DO LIKE THE PROCEDURE IN THE AT FLUSH INDICATES. The light came on for two seconds after the sixth shift from D to N - P and then went off............BUT it came right back on after about 30-40 seconds of Idle. I did learn a few things though ; On mine I have to shift really quick about .5 seconds between shifts to make the light come on. My tranny was half quart low......so I added some.
I guess i'm going to invest in a scangauge thingy and IR infrared temperature gun to try out and learn a few things in the process. THANKS FOR THE FEETBACK FOLKS

 

For this reason, I bought a Scangauge II to monitor temp.

 

That sounds like a good thing to have but I believe I found an easier and cheaper way of checking the Tranny Temperature. Using the Torque Pro Application together with a wifi OBD2-transmitter like the ELM327 and your mobile phone. The transmitter is only about $20 bucks on ebay and the Torque app. is only $5 bucks. ........Well anyhow fyi