DYNAMIC RADAR CRUISE CONTROL SYSTEM(except 2AR-FE) Cruise Main Indicator Light Circuit

DESCRIPTION

When the dynamic radar cruise control system is turned on using the cruise control main switch, the cruise control indicator (vehicle-to-vehicle distance control mode) illuminates. The ECM uses this and other indicators to indicate the control condition (presence or absence of a preceding vehicle, vehicle-to-vehicle distance, and set vehicle speed) and fail-safe state via CAN communication.

CAUTION / NOTICE / HINT

Note

Before replacing the ECM, refer to Service Bulletin.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    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.

    5. Perform the Active Test according to the display on the GTS.


      Body Electrical > Combination Meter > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Multi Display All (White) Multi-information display (White display) ON -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      Multi Display All (White)
      Result
      Result Proceed to
      The multi-information display in the combination meter assembly turns on according to the operation of the Active Test. A
      The multi-information display in the combination meter assembly does not turn on according to the operation of the Active Test. B

    B

    GO TO METER / GAUGE SYSTEM Click here

    A

  2. READ VALUE USING GTS


    1. Enter the following menus: Powertrain / Radar Cruise 1 / Data List.

    2. Read the Data List according to the display on the GTS.


      Powertrain > Cruise Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Cruise Ready Main-CPU Cruise control system standby condition ON or OFF

      ON: Cruise control main switch pushed

      OFF: Cruise control main switch not pushed

      		 -
      Cruise Ready Sub-CPU Cruise control system standby condition ON or OFF

      ON: Cruise control main switch pushed

      OFF: Cruise control main switch not pushed

      		 -
      Cruise Indicator Cruise control indicator status ON or OFF

      ON: Cruise control indicator illuminates

      OFF: Cruise control indicator turns off

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      Cruise Ready Main-CPU
      Cruise Ready Sub-CPU
      Cruise Indicator
      Result
      Result Proceed to
      The cruise control indicator illuminates and turns off according to the operation of the cruise control main switch. A
      The cruise control indicator does not illuminate but the Data List items change according to the operation of the cruise control main switch. B
      The cruise control indicator does not illuminate and the Data List items do not change according to the operation of the cruise control main switch. C

    A

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

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    REPLACE ECM Click here