Conditions for Lock-up Operation
When vehicle is driven in 3rd or 4th gear positions, vehicle speed and throttle opening are detected. If the detected values fall within the lock up zone memorized in the TCM, lock up is performed.
OVERDRIVE CONTROL DESCRIPTION
| Selector lever | D position | |
| Overdrive control switch | ON | OFF |
| Gear position | D4 | D3 |
| Vehicle speed sensor | More than set value | |
| ECM (throttle opening) | Less than set opening | |
| Closed throttle position signal | OFF | |
| A/T fluid temperature sensor | More than 20°C (68°F) | |