DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DTC Code DTC Name
Distance Control Switch Circuit

DESCRIPTION

The distance control switch sets the vehicle-to-vehicle distance setting. The distance control switch is installed in the steering pad switch. The vehicle-to-vehicle distance setting can be changed by operating the distance control switch in the steering pad switch while the dynamic radar cruise control system is in operation.

WIRING DIAGRAM

E178428E11

PROCEDURE

  1. INSPECT STEERING PAD SWITCH ASSEMBLY (DISTANCE CONTROL SWITCH)

    1. Remove the steering pad switch assembly

      Click here

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      4 (DIST) - 6 (ECC)

      Distance control switch on

      Below 2.5 Ω

      4 (DIST) - 6 (ECC)

      Distance control switch off

      1 MΩ or higher
    E204999C01

    *1

    Distance Control Switch

    -

    -

    Result

    Result

    OK

    NG
    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY

    Click here

    OK

  2. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    E181977E05

    1. Remove the spiral with sensor cable sub-assembly

      Click here

    2. If there are any defects as follows, replace the spiral with sensor cable sub-assembly with a new one: scratches, cracks, dents or chips in the connector or spiral with sensor cable sub-assembly.

    3. Check the spiral with sensor cable sub-assembly.

      1. Set the spiral with sensor cable sub-assembly to the center position

        Click here

      2. Rotate the spiral with sensor cable sub-assembly 2.5 times clockwise and measure the resistance according to the value(s) in the table below. Then rotate the spiral with sensor cable sub-assembly 5 times counterclockwise and measure the resistance according to the value(s) in the table below.

        Note:

        As the spiral with sensor cable sub-assembly may break, do not rotate the spiral with sensor cable sub-assembly more than the specified amount.

        Standard Resistance

        Tester Connection

        Condition

        Specified Condition

        4 (DIST) - 11 (DIST)

        Always

        Below 1 Ω

        6 (ECC) - 2 (ECC)

        Always

        Below 1 Ω

      3. Set the spiral with sensor cable sub-assembly to the center position and rotate the spiral with sensor cable sub-assembly 2.5 times clockwise. Then, while rotating the spiral with sensor cable sub-assembly 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection

        Condition

        Specified Condition

        4 (DIST) - 11 (DIST)

        Always

        Below 1 Ω

        6 (ECC) - 2 (ECC)

        Always

        Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU AND BODY GROUND)

    1. Disconnect the G28 spiral with sensor cable sub-assembly connector.

    2. Disconnect the G43 driving support ECU connector.

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

    Standard Resistance

    Tester Connection

    Condition

    Specified Condition

    G28-11 (DIST) - G43-6 (SPSW)

    Always

    Below 1 Ω

    G28-2 (ECC) - Body ground

    Always

    Below 1 Ω

    G28-11 (DIST) - Body ground

    Always

    10 kΩ or higher

    Result

    Result

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR