DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Main Indicator Light Circuit

DESCRIPTION

When the cruise control main switch is 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 multiplex communication and 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 as the alarm buzzer sounds. Items such as "Clean Radar Sensor", "Cruise not Available", "Check Cruise System", and "Radar Cruise Ready" are displayed on the multi-information display on the combination meter when the ECM detects signals from each sensor and actuator and sends them to the combination meter via CAN and BEAN.

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 and BEAN for communication. Therefore, if there are any malfunctions in this circuit, check for DTCs in the CAN communication and multiplex communication systems before troubleshooting this circuit.

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Body / 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 OFF or ON Confirm that the vehicle is stopped, engine idling
      OK
      The indicator light blinks/goes off.

    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 engine 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 (ECM)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      CCS Ready M-CPU Cruise control system standby condition (Main CPU)/ON or OFF Each time main switch is pushed, ON/OFF changes 1
      CCS Indicator M-CPU Cruise indicator signal (Main CPU)/ON or OFF

      ON: "CRUISE" on

      OFF: "CRUISE" off

      		 2
      OK
      When the cruise control main switch is operated, the display changes as shown above.

      Tech Tips

      1 is OK, but 2 is NG → DTC output or ECM failure


    NG

    REPLACE ECM (for 2UR-GSE) Click here

    OK

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