need to reset the "transfer case control module"

i did some research on the Grey wire mod, with apparently not doing enough... i have an 06 Tacoma 4x4 trd... and followed the first generation Tacoma instructions... I have either fried my tccm... or i have sent it into some kind of 'safety' mode. from the research i have done, there is a way to reset it. i just cant find that page anymore. i was hoping someone had some ideas on how to reset the tccm... thanks evan evanruston@hotmail.com

 

by the way i have set all the wires back to stock and when the truck is on the 4 hi and 4 low lights just flash...

 

When in 4 hi or 4 low is the 4wd actually on or is the light just blinking?

 

the first gen "grey wire" mod WILL NOT work on the 2nd gens.

check post number 5 here....

http://www.tacomaworld.com/forum/technical-chat/4838-cheap-free-mods.html#post45412

 

It's flashing all the time...any mode. I realize now that the first generation mod won't work on my second generation Tacoma... When it first happend, I found a web site that explained what that meant. It stated that if It was flashing constantly, the tccm needed to be reset... If it was any of 3 other combos it meant there was a different problem. I thought that I had bookmarked the page. Apparently I haddent. I still can't find info on resetting the transfer case control module (tccm). Any ideas???

 

I've been searching for a while for that info... The only reason I wanted to pirate the rear diff, is to use the diff lock in 2hi... I am saving for coilovers and new rear end. I go to the desert alot and pound the truck. I Knew u can't pound it in 4 hi. It could break your transfer case. Therefore diff lock in 2 hi is ideal... Any knowledge on the tccm issue? A new box is 300$. I hope I haven't fried it!?!?!

 

Disconnect the battery, make it forget.

 

yeah this may work but you have to leav it disconnected for 15-30 min

 

I definatly tried that... Also someone suggested that with a combo of pulling the 4x4 fuse... It didn't work. I also hooked up a snap on code reader and tried to see if there was a code on there. There wasn't. I think I might have to have the dealers code reader. But I found a used tccm for80$. Just hoping there is a way to reset it, without the Toyota computer. I read on a web site there was, but can't find that site anymore...

 

Check 4wd light on
There have been a few threads on the check 4wd light coming on, while the light is on you will not be able to select 4wd, the first step is to try and reset the Transfer Case Control Module.

Here is the procedure to clear the TCCM memory

1 Take 2 pieces of wire about 200mm long and strip the ends

2 Remove the drivers front seat

3 Find the TCCM, it's under the cut out in the floor mat

4 On the TCCM you will find a 20 pin and a 16 pin connector, looking at the TCCM the pins are numbered 1-20 on the 20 pin and 21-36 on the 16 pin

5 With the ignition turned off and the TCCM plugged in, take your 1st piece of wire and bridge pins 1 and 29, then with the 2nd piece bridge pins 30 and 36.

6 Turn the ignition on for 2 seconds, you should hear the relay click, turn the ignition off

7 Remove the wires and turn the ignition on, check that the light has gone off, sometimes it takes a couple of goes.

If the light doesn't go off or comes back on when you try to select 4wd there is a hard fault in the system that will require further diagnosis.



Please note, this information is provided as a guide only and no responsibility will be taken if problems arise from incorrectly following this procedure
Last edited by ML01UZ; 12-09-2009 at 05:53 PM..

 

I found this... Don't know if it all applies to my Tacoma... I think the number of pins is correct... Just have to double check

 

Did anything come of this ?
having a similar issue for a few months now with my 2005.

 

I’m having similar problems with my 05. 4x4 would work sometimes. And if it didn’t I’d cycle the key off and on while driving and it would select 4h but now nothing works. Flashing ether green 4h light and orange 4lo light and lots of clicking from what I’m assuming is my 4x4 module over on my passenger side. Have checked actuators for transfer case and front diff they seem ok any ideas

 

So I'm having a similar issue with my 2007 tacoma. It goes into 4wd hi but doesn't even try to go into 4wd low. What I mean by that is that I can't hear any sign of electronic clicking when I try to engage low. It just flashes and beeps at me. Is it possible that my T case is the issuee? I feel like it can't be the Actuator because the Actuator does worm for 4W hi. Please let me know if anyone can help.

 

When you try and put it in 4lo are you completely stopped with the clutch pushed downnnnnnnn? Like I mean downnnnn through the floorboard and out the front bumper?

 

This, they can be quite finicky to get in and out of low sometimes.

To get in and out of low range:

You must be first locked into 4wd (indicator on solid)
You must be under 3 mph
Transmission in neutral (AT)
Clutch fully depressed (MT)

If any of the above conditions are not met you will get a beep and flashing Lo light and have to start over with the switch.

 

Yes sir I stomp on that clutch in frustration lol . And I'm talking stomped through the bumper in a parking lot as flat as ground gets and still flashes and beeps.