#
CRUISE CONTROL SYSTEM OUTLINE

BHE012001011T01

• The cruise control system enables driving at a constant speed by setting vehicle speed with the cruise control switch instead of operating the AP.

• The PCM controls the throttle valve actuator to maintain the vehicle at a constant speed.

• For the control of the cruise control system, refer to the drive-by wire control. (See DRIVE-BY-WIRE CONTROL OPERATION.)

## Component and function

Component | Function | Installation location
--- | --- | ---
• DSC HU/CM (CAN communication: Vehicle speed signal) | The vehicle speed signal is sent to the PCM from either the DSC HU/CM. | Engine compartment
Cruise control switch | ON/OFF | ON/OFF | This is the main switch of the cruise control system. Turning the ON/OFF switch to on switches the cruise control system to standby status. | Steering wheel
SET/COAST | SET | When the vehicle speed exceeds 27 km/h {16.7 mph} during normal driving (cruise control system is in standby status) and the SET/COAST switch is released after it is pressed, the PCM stores the vehicle speed at the time of the switch is released and the cruise control begins.
COAST | Tapping the SET/COAST switch (tap-down operation) or continuously pressing it during cruise control decreases the set vehicle speed.
RES/ACCEL | RES | If the RES/ACCEL switch is pressed while the cruise control is in standby status (PCM has stored a set vehicle speed) and the vehicle speed exceeds 27 km/h {16.7 mph} during normal driving, the cruise control system activates to control the vehicle speed to the set vehicle speed.
ACCEL | Tapping the RES/ACCEL switch (tap-up operation) or continuously pressing it during cruise control increases the set vehicle speed.
CANCEL | CANCEL | Pressing the CANCEL switch during cruise control switches the cruise control system to standby status (Set vehicle speed is saved).
Brake switch | Depressing the brake pedal during cruise control switches the cruise control system to standby status (Set vehicle speed is saved). | Brake pedal
CPP switch | Depressing the clutch pedal during cruise control switches the cruise control system to standby status (Set vehicle speed is saved). | Clutch pedal
Neutral switch | Shifting to neutral during cruise control switches the cruise control system to standby status (Set vehicle speed is saved). | Manual transmission
PCM | • The cruise control system activates or stops based on the cruise control switch ON/OFF signal. • The cruise control duty signal, which is based on each input signal, is sent to the throttle valve actuator. | Engine compartment
Throttle valve actuator | The duty signal sent from the PCM adjusts the throttle valve opening angle. | Throttle body
Cruise control main indicator light | This illuminates while the cruise control system is in standby or control status. | Instrument cluster
Cruise control indicator light | This illuminates while the cruise control system is in control status.