Torque Converter Clutch (Electronically Controlled Capacity Clutch: ECCC) Application Conditions
The clutch apply is controlled by moving the converter clutch control valve by commanding Torque Converter Clutch (TCC) solenoid using the PWM signal.
The TCC is normally applied in 2nd, 3rd and 4th gears only when all of the following conditions exist
- The engine coolant temperature is above 70°C (158°F) and ATF temperature is above 18°C (64.5° F).
- The shift pattern requests TCC apply.
Moreover, TCC is always applied in 2nd, 3rd and 4th gears when the transmission oil temperature is above 135°C (275°F).
This mode should be canceled at 125°C (257°F).
General Specifications
| Remarks | ||||
|---|---|---|---|---|
| Model | THM 4L30-E | |||
| Engine | V6 3.5L 6VE1 | DOHC | ||
| Type | Automatic four speed overdrive in 4th gear lock-up clutch torque converter | |||
| Control systems | Shift control | Hydraulic | ||
| Shift pattern | Electronic | |||
| Shift quality | Electronic | |||
| Lock-up clutch | Electronic | |||
| Gear ratio | 1st | 2.856 | ||
| 2nd | 1.618 | |||
| 3rd | 1.000 | |||
| 4th (O/D) | 0.723 | |||
| Reverse | 2.000 | |||
| Gear set | Noiseless, high torque capability | |||
| Oil used | Name | ATF DEXRON®-III | ||
| Q'ty liter (qt) | 8.6 (9.1) | |||
| Torque converter | 2,100+/-150 | Stall speed (rpm) | ||
| Reverse clutch | RC | 4 | Number of discs | |
| Second clutch | C2 | 6 | ||
| Third clutch | C3 | 6 | ||
| Brake band | Double wrap | |||
| Fourth clutch | C4 | 2 | Number of discs | |
| Overrun clutch | OC | 1 | ||
| Overdrive | OFW | 10 | Number of rollers | |
| Principal | PFW | 26 | Number of sprags | |
| Ravigneaux planetary gear set | Input sun gear | 30 | Number of teeth | |
| Pinion gear | 19 | |||
| Long pinion | 23 | |||
| Ring gear | 90 | |||
| Long pinion | 19 | |||
| Output sun gear | 46 | |||
| Overdrive planetary gear set | Sun gear | 31 | ||
| Pinion gear | 24 | |||
| Ring gear | 81 | |||
General Specifications Chart
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
Scheme 13
Scheme 14
Scheme 15
Scheme 16
Scheme 17
Scheme 18
Scheme 19
See also:
• ON-BOARD DIAGNOSTIC II SYSTEM CHECK