Elec87
11-01-2009, 10:05 PM
Okay guys, I am working on wiring up the tcc and have a few questions.
blue connector pin 32 tcc enable, is this the 12 volt source to feed the switch or is this the switched 12 input to the trans?
red connector pin 77 tcc brake signal??????? which one does what.....
Thanks
Pocket
11-01-2009, 10:35 PM
http://www.lt1swap.com/pictures/16_a4_stop_lamp_switch.gif
Thats for a 99+ PCM but the labels should get you going
TCC enable is the 12v to the trans
Brake signal is the brake switch
busta9876
11-01-2009, 11:30 PM
here is the correct auto trans schematic for 1998 ls1.
12v+ from a fused key source should be fed to the brake switch. Then out of the brake switch to C1-77.
The wire should have 12v+ signal when brake pedal IS NOT PRESSED. The brake switch should OPEN the circuit when you hit the brakes.
Do not do anything with C2-32, this wire should go directly FROM the PCM to the Transmission. This is a TCC Solenoid control wire. All 1995 and up 4L60E transmissions use a 2 solenoid system for the lock up torque converter.
The TCC Enable as its sometimes called, is a solenoid that basically readys the valve body for lockup. Then the TCC PWM solenoid is pulsed on/off at a changing amount, from 0-100% duty cycle, to control the amount of slip in the torque converter.