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DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Main Indicator Light Circuit

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DTC Code DTC Name
  Cruise Main Indicator Light Circuit
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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 cruise main indicator light goes off, the master warning light comes 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.

Tip:

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, illuminates the master warning light and displays a message on the multi-information display in the combination meter 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.

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INSPECTION PROCEDURE

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PROCEDURE


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    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 Electrical / Combination Meter / Active Test.

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

      Table 1. 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 indicator light illuminates/goes off.

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    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.

      Table 2. 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 main indicator light on

      OFF: Cruise main indicator light off

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

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


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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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    REPLACE COMBINATION METER ASSEMBLYClick here

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    REPLACE ECMClick here