DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Main Indicator Light Circuit

DESCRIPTION

When the cruise control main switch is turned on, the cruise main indicator light and "RADAR READY" indicator come on. This indicates the control condition (presence or absence of a vehicle in front, vehicle-to-vehicle distance, and set vehicle speed) and fail-safe state through the CAN communication system. The master warning light and cruise main indicator light come on and vehicle-to-vehicle distance information is displayed on the combination meter assembly as the alarm buzzer sounds. Items such as "Clean Radar Sensor", "Cruise Control not Available", "Check Cruise Control System", and "Radar Ready" are displayed on the multi-information display on the combination meter assembly when the driving support ECU detects signals from each sensor and actuator and sends them to the combination meter assembly via CAN.

Tech Tips

If the vehicle in front in the same lane significantly decreases vehicle speed or another vehicle moves in front of your vehicle, adequate deceleration cannot be applied and the vehicle-to-vehicle distance will shorten. At this time, the system sounds the buzzer and the master warning light blinks to warn the driver. Each indicator in the dynamic radar cruise control uses CAN for communication. Therefore, if there are any malfunctions in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

WIRING DIAGRAM

A01NDL1E12

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the cruise main indicator light by performing the Active Test.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Indicat. Lamp Cruise

      Cruise main indicator light

      (Constant speed control mode)

      		 OFF or ON Confirm that the vehicle is stopped with engine idling
      Indicat. Radar Cruise

      Cruise main indicator light

      (Vehicle-to-vehicle distance control mode)

      		 OFF or ON Confirm that the vehicle is stopped with engine idling
      OK
      The display changes as shown above according to Active Test.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Radar Cruise / Data List.

    5. Check the Data List for proper functioning of the cruise main indicator light.

      Radar Cruise
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cruise Control Main Switch Cruise control switch signal/ON or OFF

      ON: Main switch on

      OFF: Main switch off

      		 -
      OK
      When the cruise control main switch is operated, the display changes as shown above.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here