DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

The vehicle-to-vehicle distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The vehicle-to-vehicle distance control switch is installed in the steering pad switch assembly. The vehicle-to-vehicle distance set value can be changed by operating the vehicle-to-vehicle distance control switch (steering pad switch assembly) while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.

WIRING DIAGRAM

A01VAK1E01

PROCEDURE


  1. READ VALUE USING GTS (DISTANCE CONTROL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Radar Cruise2 / Data List.

    5. Check the Data List to confirm function of the distance control switch.


      Powertrain > Radar Cruise2 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Distance Control Switch Distance control switch signal ON or OFF

      ON: Distance control switch on

      OFF: Distance control switch off

      		 -

      Powertrain > Radar Cruise2 > Data List
      Tester Display
      Distance Control Switch
      OK
      The display changes in accordance with switch operation.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

      Click here

    2. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

      for Single Type: Click here

      for Dual Type: Click here

    2. Inspect the spiral cable sub-assembly.

      for Single Type: Click here

      for Dual Type: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY for Single Type: Click here
    REPLACE SPIRAL CABLE SUB-ASSEMBLY for Dual Type: Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)


    1. for 2WW:


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the G168 driving support ECU assembly connector.

      3. Disconnect the A62 ECM connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-12 (DIST) - G168-23 (SPSW) Always Below 1 Ω
        G8-12 (DIST) or G168-23 (SPSW) - Body ground Always 10 kΩ or higher
        G8-2 (ECC) - A62-42 (ECCS) Always Below 1 Ω

    2. for 3ZR-FAE, 3ZR-FE (except K111, K111F):


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the G168 driving support ECU assembly connector.

      3. Disconnect the A62 ECM connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-12 (DIST) - G168-23 (SPSW) Always Below 1 Ω
        G8-12 (DIST) or G168-23 (SPSW) - Body ground Always 10 kΩ or higher
        G8-2 (ECC) - A62-35 (ECCS) Always Below 1 Ω

    3. except 2WW, 3ZR-FAE, 3ZR-FE (except K111, K111F):


      1. Disconnect the G8 spiral cable sub-assembly connector.

      2. Disconnect the G168 driving support ECU assembly connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-12 (DIST) - G168-23 (SPSW) Always Below 1 Ω
        G8-12 (DIST) or G168-23 (SPSW) - Body ground Always 10 kΩ or higher
        G8-2 (ECC) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY for LHD: Click here
    REPLACE DRIVING SUPPORT ECU ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR