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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 dynamic radar cruise control system is turned on using the cruise control switch (ON-OFF button), the cruise control indicator light (vehicle-to-vehicle distance control mode) illuminates. The driving support ECU assembly uses this and other indicators to indicate the control condition (presence or absence of a vehicle in front, vehicle-to-vehicle distance, and set vehicle speed) and fail-safe state via CAN communication.

Tip:

If the preceding vehicle in the same lane significantly decreases vehicle speed or another vehicle moves in front of this vehicle, adequate deceleration cannot be applied by the dynamic radar cruise control system and the vehicle-to-vehicle distance will become shorter. At this time, the system sounds the buzzer to warn the driver. The indicators for the dynamic radar cruise control system use CAN for communication. Therefore, if there are any indicator malfunctions, check for DTCs in the CAN communication system before troubleshooting this circuit.

Table 1. *1 Combination Meter Assembly *2 Power Management Control ECU *3 Driving Support ECU Assembly *4 CAN Communication Line
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WIRING DIAGRAM

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PROCEDURE


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    PERFORM ACTIVE TEST USING GTS (INDICAT. LAMP CRUISE, INDICAT. RADAR CRUISE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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

      Table 2. Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Indicat. Lamp Cruise

      Cruise control indicator light

      (Constant speed control mode)

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

      Cruise control indicator light

      (Vehicle-to-vehicle distance control mode)

      OFF or ON Confirm that the vehicle is stopped with engine idling
      OK
      The display changes in accordance with Active Test operation.
    6. Turn the power switch off.


    • OK

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

    • NG

      REPLACE COMBINATION METER ASSEMBLY (Click here)