DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DTC Code DTC Name
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

C365838E01

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 hereClick 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

    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

    for RHD:Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR