Component Description
| Component | Description |
|---|---|
| ITS control unit | Judges the lane departure depending on the lane detection result and each signal Controls the warning buzzer and the warning systems ON indicator Transmits lane departure warning lamp signal to combination meter via CAN communication |
| Warning systems switch | Inputs the warning systems switch signal to ITS control unit |
| Warning systems ON indicator (On the warning systems switch) | Turns on the warning systems ON indicator, according to a warning systems ON indicator signal received from the ITS control unit |
| Rear view camera | Detects the lane marker in travel lane Transmits the detected lane condition signal to ITS control unit via ITS communication |
| ABS actuator and electric unit (control unit) | Transmits vehicle speed signal to ITS control unit via CAN communication Transmits yaw rate signal/side G sensor signal to ITS control unit via CAN communication |
| Buzzer (combination meter) | Activates the warning buzzer, according to a warning buzzer signal received from the ITS control unit |
| Combination meter | Turns the Lane Departure Warning lamp ON/OFF according to the signals from ITS control unit via CAN communication Receives Lane Departure Warning ON indicator signal via CAN communication. |
| Steering angle sensor | Transmits steering angle sensor signal to ITS control unit via CAN communication |
| BCM | Transmits turn signal indicator to ITS control unit via CAN communication Transmits dimmer signal to ITS control unit via CAN communication |
| ECM | Transmits engine speed signal to ITS control unit via CAN communication |
| TCM | Transmits the output shaft speed signal, input speed signal, current gear position signal and shift position signal to ITS control unit via CAN communication |
| AV control unit | Receives the various systems and camera signals via CAN communication and routes them to the center display |
| Center display | Displays the various system screen signals according to the priority level received via CAN communication |
| Rear view camera washer control unit | Controls the air pump to drive air to the rear camera lens according to the signals received from the ITS control unit |
| Rear view camera air pump motor | Drives air to the rear camera lens according to the signals received from the pump control unit |
Scheme 28
FUNCTION DESCRIPTION
- Lane Departure Warning (LDW) system provides a lane departure warning function when the vehicle is driven at speeds of approximately 70 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 (orange) on the combination meter will blink to alert the driver.
- The warning does not occur during turn signal operation (Lane change side).
- The warning function will stop when the vehicle returns inside of the lane markers.
EXAMPLE
Scheme 29
When the vehicle approaches the right lane marker, the driver is alerted by the buzzer and the blinking of lane departure warning lamp (orange).
OPERATION DESCRIPTION
- When the system is turned ON by operating the warning systems switch, ITS control unit turns ON the warning systems ON indicator.
- Rear view camera monitors lane markers of the traveling lane. It transmits the detected lane condition signal to ITS control unit via ITS communication.
- When judging from a lane marker detection signal that the vehicle is approaching the lane marker, the ITS control unit controls the following item to alert the driver. Activates warning buzzer ITS control unit transmits a lane departure warning lamp signal to combination meter via CAN communication and turns ON/OFF the lane departure warning lamp (orange).
ECU IDENTIFICATION
ITS control unit part number is displayed.
DESCRIPTION
In general, each customer feels differently about an incident. It is important to fully understand the symptoms or conditions for a customer complaint.
There are many operating conditions that lead to the malfunction. A good grasp of such conditions can make troubleshooting faster and more accurate.
Some conditions may cause the lane departure warning lamp to stay ON.
Utilize a work sheet sample to organize all of the information for troubleshooting.
KEY POINTS
- WHAT..... System and functions
- WHEN..... Date, Frequencies
- WHERE..... Road conditions
- HOW..... Operating conditions, Symptoms
Scheme 30
- Perform action test to verify the customer's concern.
- Perform action test and check the system operation after system diagnosis.
| WARNING | Be careful of traffic conditions and safety around the vehicle when performing road test. |
| CAUTION | Fully understand the following items well before the road test; Precautions: Refer to " PRECAUTION FOR LDW SYSTEM SERVICE ". System description for LDW: Refer to " SYSTEM DESCRIPTION ". System description for BSW: Refer to " SYSTEM DESCRIPTION ". System description for MOD: Refer to " SYSTEM DESCRIPTION ". Handling precaution: Refer to " PRECAUTIONS FOR LANE DEPARTURE WARNING ". |
Always perform the calibration after removing and installing or replacing the rear view camera.
| CAUTION | The system does not operate normally unless the rear view camera aiming adjustment is performed. Always perform it. |
Always perform the calibration after removing and installing or replacing the rear view camera.
| CAUTION | Place the vehicle on level ground when the calibration is performed. Follow the CONSULT when performing the calibration. (Rear view camera calibration cannot be operated without CONSULT). |
Scheme 31
- PERFORM SELF-DIAGNOSIS Perform self-diagnosis of the ITS control unit. Is any DTC detected? Except "U1308" >> Perform diagnosis on the detected DTC and repair or replace the applicable item. Refer to " «DTC INDEX»(ref-576065-S16768496962013090900000) ". "U1308" or no DTC >> GO TO 2.
- PREPARATION BEFORE REAR VIEW CAMERA CALIBRATION NOTE: Select the "AVM" to diagnose the ITS control unit by CONSULT. Perform pre-inspection for diagnosis. Refer to " «INSPECTION PROCEDURE»(ref-576067-S10727478072013090900000) ". Adjust the tire pressure to the specified pressure value. Maintain no-load in vehicle. Check if coolant and engine oil are filled up to correct level and fuel tank is full. Situate vehicle where the camera is exposed at an atmosphere temperature between 0°C (32°F) and 30°C (86°F) Move the shift selector to P (Park) and release the parking brake. Clean the rear view camera. >> GO TO 3.
- PREPARATION OF CALIBRATION TARGET MARK Prepare the calibration target mark according to the following figure: Left and right targets Center target Side of the black or white area = 200 mm (7.87 in) Side of the square target = 400 mm (15.75 in) >> Refer to " «WORK PROCEDURE (TARGET SETTING)»(ref-576067-S00166081642013090900000) ".
CAN controller controls the communication of CAN communication signal and ITS communication signal, and the error detection.
The lane departure warning lamp in the combination meter does not turn ON when turning on the ignition switch
The warning of Lane Departure Warning (LDW) is activated during the use of a turn signal.
Note. For the operational conditions of Lane Departure Warning (LDW), refer to " SYSTEM DESCRIPTION ".
- LDW system setting is not selectable on the navigation screen.
- NOTE: When the ignition switch is in ACC position, LDW system setting cannot be changed. "Lane Departure Warning" is not indicated on the navigation screen. The switching between ON and OFF cannot be performed by operating the navigation system. The item of "Lane Departure Warning" on the navigation screen is not active.
- After turning ON the ignition switch or starting the engine, LDW setting of the navigation system cannot be selected for several tens of seconds under the following conditions: After replacing AV control unit. After erasing connection history of the navigation system. After erasing self-diagnosis results of AV control unit.
- The LDW or LDP system setting differs from the one set at the previous driving. NOTE: Turn OFF the ignition switch and wait for 5 seconds or more.