DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A0043VOE12

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS (DISTANCE CONTROL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS 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

    INSPECT STEERING PAD SWITCH RH Click here

    OK

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

  2. INSPECT STEERING PAD SWITCH RH


    1. Remove the steering pad switch RH Click here.

      A0040AOE01
      Text in Illustration
      *1 Distance Control Switch - -
      *a

      Component without harness connected

      (Steering Pad Switch RH)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z9-4 - z9-6 Distance control switch ON Below 2.5 Ω
      z9-4 - z9-6 Distance control switch OFF 1 MΩ or higher

    3. Install the steering pad switch RH Click here.


    NG

    REPLACE STEERING PAD SWITCH RH Click here

    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. A00426ME04
      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 Spiral Cable Sub-assembly Position Specified Condition
      z9-4 - L43-11 (DIST) Center Below 3 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z9-6 - L43-2 (ECC) Center Below 3 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      z9-4 - L43-11 (DIST) Always Below 3 Ω
      z9-6 - L43-2 (ECC) Always Below 3 Ω

      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

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    OK

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


    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
      L54-6 (SPSW) - L43-11 (DIST) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      L54-6 (SPSW) or L43-11 (DIST) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVING SUPPORT ECU - SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY)

    OK

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


    1. A0041OYE36
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      L43-2 (ECC) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - BODY GROUND)

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here