DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Main Indicator Light Circuit

DESCRIPTION

When the cruise control main switch is on, the cruise control indicator light and RADAR READY indicator turn on. These lights indicate 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 control indicator light turn on and vehicle-to-vehicle distance information is displayed on the combination meter as the alarm buzzer sounds. Items such as "Clean Radar Sensor", "Cruise not Available", "Check Cruise Control System" and "Radar Ready" are displayed in the multi-information display on the combination meter when the driving support ECU detects signals from each sensor and actuator and sends them to the combination meter 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 communication. Therefore if there are any malfunctions in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (CRUISE CONTROL INDICATOR LIGHT)


    1. Select the Active Test, use the GTS to generate a control command, and then check that the combination meter operates Click here.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Indic. Lamp Cruise Cruise control indicator light ON / OFF -
      Indicat. Radar Cruise Radar cruise indicator light ON / OFF -
      OK
      Indicator light turns on.

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

  2. READ VALUE USING GTS (CRUISE CONTROL INDICATOR LIGHT)


    1. Check the Data List for proper functioning of the Cruise control indicator light Click here.

      Radar Cruise
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      CCS Main SW-Ready Dynamic radar cruise control system standby condition/ON or OFF

      ON: Switch ready is SET

      OFF: Switch ready is UNSET

      		 -
      OK
      When cruise control main switch operation is performed, the result will be same as above.
      Result
      Result Proceed to
      OK A
      NG (for 2GR-FSE) B
      NG (for 4GR-FSE) C

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    A

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here