External Controls
External Controls
Range Selection
The PCM receives the range selector position by monitoring 2 independent voltage signals from the Transmission Range (TR) sensor. The TR voltages are then compared to an allowed voltage range for each gear.
Park
With the range selector in PARK:
- the parking pawl locks the output shaft to the case.
- the engine may be started.
- with the key ON, power flows from the high voltage battery through the starter (generator) inside the transmission, to start the engine.
- the ignition key can be removed.
- the ignition switch can be cycled from OFF to START or RUN.
Reverse
NOTE: Although the engine may be running in reverse, the reverse torque at the wheels is produced entirely by the electric traction motor.
With the range selector in REVERSE:
- the vehicle may be operated in a rearward direction.
- the reversing lamps are illuminated.
- if the vehicle is not started, there is no reverse gear engagement.
Neutral
With the range selector in NEUTRAL:
- no power flows through the transmission.
- the output shaft is disengaged from the drive wheels.
Drive
The range selector DRIVE position provides:
- low speed driving.
- acceleration.
- cruise conditions.
- deceleration.
- maximum fuel economy during normal operation.
If the vehicle is not started, there is no drive gear engagement.
Low
NOTE: There is no increase in acceleration in LOW.
The range selector LOW position provides:
- engine braking.
If the vehicle is not started, there is no low gear engagement.
If the vehicle is not started, there is no drive gear engagement.
Silent Key Start (SKS)
The Silent Key Start (SKS) is essentially the ability for the customer to get in the vehicle, turn the key to crank, and start the vehicle (it would enter run mode) with the engine OFF.
The transaxle is required to permit the vehicle to operate in a silent start mode. If both the engine coolant and the transaxle fluid temperatures are between 4°C (40°F) and 43°C (110°F) when the driver requests the vehicle to start, the vehicle will enter run mode with the engine off.
The engine will remain off until the driver shifts out of PARK and 1 or more of the following conditions are met:
- the vehicle speed is greater than 16 km/h (10 mph).
- the distance traveled is greater than 3 m (10 ft).
- the accelerator pedal position is greater than 5 counts, about 1%.
The engine may pull up at any time to facilitate the climate control function or to charge the high voltage battery.
Silent Drive Away (SDA)
Silent Drive Away (SDA) is the ability for the customer to get in, silently start the vehicle and drive away with the engine OFF.
The transaxle is required to permit the vehicle to operate in a silent drive away mode. If both the engine coolant and the transaxle fluid temperatures are greater than 43°C (110°F) when the driver requests the vehicle to start, the vehicle will enter run mode and can be driven with the engine OFF.
The engine will remain off until the driver shifts out of PARK and one or more of the following conditions are met:
- The vehicle speed is greater than 32 km/h (20 mph)
- The distance traveled is greater than 50 m (150 ft)
- The driver demanded power is greater than the lesser of either 8 kwh or the battery discharge limit existing during the silent driving event
The engine may pull up at any time to facilitate the climate control function or to charge the high voltage battery.
Brake Shift Interlock System
The brake shift interlock system prevents a shift out of PARK unless the brake pedal is depressed. The brake shift interlock system has a Brake Shift Interlock Actuator (BSIA) mounted on the selector lever assembly. If the ignition switch is in the RUN position, the BSIA will allow the selector lever to be moved out of PARK only when the brake pedal is pressed.
External Controls
The external control of the Electronically Controlled Continuously Variable Transmission (eCVT) is mechanically controlled by a cable connected to the selector lever and electronically controlled by the TR sensor (located in the selector lever assembly). The selector lever position determines PARK, REVERSE, NEUTRAL, DRIVE and LOW modes.