Components and Functions of Cruise Control System
COMPONENT FUNCTION
| Component | Function |
|---|---|
| Cruise control actuator assembly with control module | Cruise control module: Executes centralized control by means of a microcomputer over all functions including setting a constant speed, resuming it, setting coast, limiting minimum speed and cancelling cruise control. Cruise control actuator (stepping motor & clutch): Actuates accelerator pedal through cruise cable and arm according to a signal from cruise control module to control vehicle speed. |
| Cruise ON/OFF switch | This switch has a momentary contact type button to turn the cruise control system ON and OFF. |
| SET/COAST switch | When this switch is removed down (ON) and released (OFF) while vehicle is running at a speed 40 km/h (25 mile/h) or higher, vehicle speed at that OFF moment is stored in memory and it is maintained (constant cruising). Rotating this switch (ON) continuously during constant cruising keeps slowing down vehicle speed as long as it is ON. When it is released (OFF), vehicle speed at that moment is stored in memory and vehicle starts constant cruising. |
| RESUME/ACCEL switch | When this switch is moved up (ON) during constant cruising, vehicle speed keeps increasing as long as it is ON. When it is released (OFF), vehicle speed at that moment is stored in memory and vehicle starts constant cruising. If vehicle speed is higher than 40 km/h (25 mile/h) after cruise control is cancelled, turning this switch ON momentarily will resume the speed at which vehicle was running before cancellation. |
| CANCEL switch | When this switch is pulled (ON), cruise control (accelerator pedal control) is cancelled. |
| Vehicle speed sensor (VSS) | The VSS is mounted on the transaxle left case. The VSS converts vehicle speed into pulse signal and send it to the cruise control module. |
| Stop lamp switch | The stop lamp switch has 2 contact points. One contact point closes when the brake pedal is depressed to light the stop lamp and provides a voltage signal to the cruise control module. This signal, when inputted cancels cruise control (sets the accelerator pedal free). The other contact point (brake pedal position switch) opens when the brake pedal is depressed, to shut off the power to the magnetic clutch in the actuator, thereby cancelling cruise control (setting the accelerator pedal free). This switch is installed to cancel cruise control (constant cruising) without fail. |
| Clutch pedal position switch (M/T vehicle only) | When the clutch pedal is depressed, the clutch pedal position switch closes and provides a ground signal to cruise control module. The cruise control module cancels cruise control (accelerator pedal control) when this signal is inputted. |
| Transmission range sensor (shift switch) (A/T vehicle only) | When the selector lever is places in either "P" or "N" position, the transmission range switch closes and provides a ground signal to cruise control module. The cruise control module cancels cruise control (accelerator pedal control) when this signal is inputted. |
| ECM - Throttle opening signal (4 A/T vehicle only) | Throttle opening signal is inputted from ECM. According to this signal, the cruise control module detects the throttle opening and uses it as one of the factors to output the overdrive and TCC OFF command signal to ECM. |
| TCM - Overdrive and TCC off command signal output | When the throttle opening for the vehicle speed exceeds the specified value during cruise control, the cruise control module sends this signal to TCM. TCM uses this signal as one of signals to control 4-A/T. |
| "CRUISE" indicator lamp | In the state with the ignition switch ON and the cruise control system OFF, pressing cruise ON/OFF switch once and releasing it will activate the cruise control system and the cruise control module will cause the indicator lamp to light up. |
| "SET" indicator lamp | It lights up when cruise control (accelerator pedal control) is functioning. |