System Description

LANE DEPARTURE WARNING (LDW) SYSTEM


System Description


OUTLINE
- Lane Departure Warning (LDW) system provides a lane departure warning function when the vehicle is driven at speeds of approximately 72 km/h (45 MPH) or more.
- When the vehicle approaches either the left or the right side of the traveling lane, a warning will sound and the lane departure warning lamp (yellow) on the combination meter will blink to alert the driver.
- The warning function will stop when the vehicle returns inside of the lane markers.






BASIC OPERATIONS

Switches And Indicator/Warning Lamps






Bulb Check Action and Fail-safe Indication






LDW INITIAL STATE CHANGE

CAUTION:
Never change LDW initial state "ON" / "OFF" without the consent of the customer.
LDW initial state can be changed.
- LDW initial ON* - LDW function is automatically turned ON, when the ignition switch OFF / ON.
- LDW initial OFF - LDW function is still OFF when the ignition switch OFF / ON.
*: Factory setting

How to change LDW initial state
1. Turn ignition switch ON.
2. Switch LDW and LDP functions to OFF.
3. Push and hold LDW switch for more than 4 seconds.
4. Buzzer sounds and blinking of the lane departure warning lamp informs that the LDW initial state change is completed.

LDW SYSTEM CONTROL DESCRIPTION
- LDW system is controlled by lane camera unit.
- Lane camera unit monitors lane markers of the traveling lane.
- Combination meter turns the lane departure warning lamp ON/OFF according to the signal from the lane camera unit via CAN communication (through unified meter and A/C amp.).
- When the lane camera unit judges vehicle deviation from the traveling lane, it controls following actions to alert the driver.
- Requests the lane departure warning lamp activation to combination meter.
- Controls the lane departure warning buzzer.

LDW OPERATING CONDITION
- LDW ON indicator: ON

NOTE:
LDP ON indicator lamp is OFF.
- Vehicle speed: approximately 72 km/h (45 MPH) or more

NOTE:
For details of LDW system operating conditions, refer to normal operating condition LDW and LDP.






SIGNAL INPUT/OUTPUT BY CAN COMMUNICATION
Lane camera unit receives signals via CAN communication. It also detects vehicle conditions that are necessary for LDW control.