tcc not working

[bonnieclyde100]

here is a wiring diagram of how i wired my tcc. any idea on why it is not working? something in tunerpro hopefully.

[sturgillbd]

You may need to use a relay to control the tcc solenoid. The pcm may not be able to sink the current that the solenoid needs to operate. Use pin e10 to break the ground side of the coil for the relay. Look at how GM used a relay on the 7747 and a 700R4. You can use a test light between pin e10 and 12v power to see if the pcm is actually commanding tcc lockup with it disconnected from the transmission. If the light comes on when qualifiers are met, a relay should solve your issue.

Brian

[bonnieclyde100]

the solinoid is not being powered by the pcm it is being powered just as you said witha relay hooked up with the brake switch to kill power when brake is applied. thepcm is only handling the ground. the e10 tan wire is the ground wire. i will try the test light but im sure its not working because when i hit the manual switch to ground i feel it engauge and see rpm drop about 200 rpm.

You may need to use a relay to control the tcc solenoid. The pcm may not be able to sink the current that the solenoid needs to operate. Use pin e10 to break the ground side of the coil for the relay. Look at how GM used a relay on the 7747 and a 700R4. You can use a test light between pin e10 and 12v power to see if the pcm is actually commanding tcc lockup with it disconnected from the transmission. If the light comes on when qualifiers are met, a relay should solve your issue.

Brian

[sturgillbd]

According to the 7427 pinout spreadsheet, you may be using wrong pin on PCM. Try using pin E11 instead of E10. Here is the info I found:

E10	TCC Solenoid	Transmission	Terminal (T), TCC On/Off (4L60-E Only)	TAN/ BLK, BRN
E11	PWM TCC Solenoid, TCC Solenoid	Transmission	TCC PWM not used in early 4L60-E (4L60-E Only), TCC On/Off (4L80-E and 700R4)	BRN

Since you have a 700R4 and bin is set to manual, I beleive this is what you need to use

[bonnieclyde100]

the wiring schematic for my pcm 16168625 doesnt show anything for e11 but i will try it out. i will hook a meter to it while i drive to see if i get any readings. what you said makes alot of sence so i hope it works im tired of manually locking my converter. i have a vacuum switch but with my cam i have trouble getting it to stay locked especially on the interstate

According to the 7427 pinout spreadsheet, you may be using wrong pin on PCM. Try using pin E11 instead of E10. Here is the info I found:

E10	TCC Solenoid	Transmission	Terminal (T), TCC On/Off (4L60-E Only)	TAN/ BLK, BRN
E11	PWM TCC Solenoid, TCC Solenoid	Transmission	TCC PWM not used in early 4L60-E (4L60-E Only), TCC On/Off (4L80-E and 700R4)	BRN

Since you have a 700R4 and bin is set to manual, I beleive this is what you need to use

[sturgillbd]

Here is some more info for you if it didn't work with just the pin change. http://www.thirdgen.org/techboard/di...700r4-tcc.html

Edit:
Look under parameter type view and go to Manual Transmission. Read the parameter info on it and Torque Converter Clutch Only also. This may help to solve your issue

Brian

[jim_in_dorris]

I can't remember the thread where it is, but E11 is the correct pin. You are not the first person to have this problem. I think thirdgen had the thread, but Fast would know for sure.