Solenoids

SOLENOIDS

1-2/4-5 solenoid - The 1-2/4-5 solenoid is activated when the TCM determines that the transmission must shift into or out of 2nd gear or 5th gear. The solenoid is only activated during the shifting of the transmission. When the solenoid is activated, hydraulic pressure is applied to the proper shift elements in the transmission to allow the desired shift. Once the shift is completed, the solenoid is turned off.

2-3 solenoid - The 2-3 solenoid is activated when the TCM determines that the transmission must shift into or out of 3rd gear. The solenoid is only activated during the shifting of the transmission. When the solenoid is activated hydraulic pressure is applied to the proper shift elements in the transmission to allow the desired shift. Once the shift is completed, the solenoid is turned off.

3-4 solenoid - The 3-4 solenoid is activated when the TCM determines that the transmission must shift into or out of 4th gear. The solenoid is only activated during the shifting of the transmission. When the solenoid is activated, hydraulic pressure is applied to the proper shift elements in the transmission to allow the desired shift. Once the shift is completed, the solenoid is turned off. TCC solenoid - The TCC solenoid is activated when the TCM determines that the Torque converter clutch should be activated. The TCC clutch is a variable slip torque clutch that allows control of torque converter slip from 5% to 95.5% of full TCC engagement. The clutch is controlled by the TCC solenoid which is pulse width modulated (PWM) to provide the desired amount of slip.

Shift Pressure Solenoid - The Shift Pressure Solenoid is activated when the TCM determines that a transmission shift is required. The solenoid is PWM controller to allow the proper amount of hydraulic pressure to the shift elements. The solenoid is only activated during the shifting of the transmission. When the solenoid is activated, hydraulic pressure is removed from the proper shift elements to allow the desired shift. Once the shift is completed, the solenoid is turned off.

Modulation pressure solenoid - The modulation pressure is always active. The solenoid is pulse width modulated (PWM) controlled and is used to modulate the hydraulic system pressure to the desired pressure.