DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise Main Indicator Light Circuit

DESCRIPTION

When the dynamic radar cruise control system is turned on using the cruise control main switch (ON-OFF button), the cruise control indicator (vehicle-to-vehicle distance control mode) or cruise control indicator (constant speed 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 speed) and fail-safe state via CAN communication.

Tech Tips

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.

WIRING DIAGRAM

A018KUXE32
*1 Combination Meter Assembly
*2 CAN Communication Line

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (METER DISPLAY 1)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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


      Body Electrical > Combination Meter > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Meter Display 1

      Cruise control indicator (Constant speed control mode)

      Cruise control indicator (Vehicle-to-vehicle distance control mode)

      		 OFF or All -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      Meter Display 1

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

      OK
      The display changes in accordance with Active Test operation.
      Result
      Proceed to
      OK
      NG

    6. Turn the engine switch off.


    OK

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

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here