Shift Performance Curve Control
The shift performance curve control performs when the following conditions are satisfied.
- Engine coolant temperature at starting: 50°C (122°F) or less
- Vehicle speed: 53 km/h (32.9 MPH) or less
The shift performance curve control is performed to raise the temperature of catalyst to the operating temperature in a short period of time after engine start.
ECM requests TCM to change shift performance curves according to the following sensor and signal.
- Engine coolant temperature sensor
- Electronic stability program control unit (each wheel speed)
The shift performance curve control works only electrically and operates for 160 seconds at a maximum. ECM requests TCM to change shift performance curves via drivetrain CAN communication. For low or medium load state, gear shifting is performed when engine speed is higher or vehicle speed is faster.