DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A003WX1E17

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DISTANCE CONTROL SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

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

      Radar Cruise
      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

      -
      OK
      The display changes in accordance with switch operation.

    NG
    OK
  2. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly Click here.

      A003XTQE01
      Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      *1 Distance Control Switch
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z4-4 - z4-7 Distance control switch ON Below 2.5 Ω
      z4-4 - z4-7 Distance control switch OFF 1 MΩ or higher
    3. Install the steering pad switch assembly Click here.


    NG
    OK
  3. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    Note

    The spiral with sensor cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral with sensor cable sub-assembly may cause airbag deployment. Be sure to read the page shown in the link/brackets.


    1. A003YV8E05
      Text in Illustration
      *a

      Component without harness connected

      (Spiral with Sensor Cable Sub-assembly)

      Remove the spiral with sensor cable sub-assembly Click here.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      z4-4 - H30-12 (DIST) The spiral with sensor cable sub-assembly is centered Below 1 Ω
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the right
      z4-7 - H30-2 (ECC) The spiral with sensor cable sub-assembly is centered Below 1 Ω
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the right

      Tech Tips

      The spiral with sensor cable sub-assembly makes a maximum of approximately 5 rotations.

    3. Reinstall the spiral with sensor cable sub-assembly Click here.


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


    1. Disconnect the driving support ECU assembly connector.

    2. Disconnect the spiral with sensor cable sub-assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      H5-7 (MODE) - H30-12 (DIST) Always Below 1 Ω
      H5-7 (MODE) or H30-12 (DIST) - Body ground Always Below 1 Ω
    4. Reconnect the driving support ECU assembly connector.

    5. Reconnect the spiral with sensor cable sub-assembly connector.


    NG
    OK
  5. CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - BODY GROUND)


    1. A003XMME01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

      Disconnect the spiral with sensor cable sub-assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      H30-2 (ECC) - Body ground Always Below 1 Ω
    3. Reconnect the spiral with sensor cable sub-assembly connector.


    NG
    OK