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 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 controlling vehicle speed in vehicle-to-vehicle distance control mode.

WIRING DIAGRAM

A01G88IE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS (DISTANCE CONTROL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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.

    6. Turn the engine switch off.


    NG

    INSPECT STEERING PAD SWITCH ASSEMBLY Click here

    OK

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

  2. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly Click here

      A01G63LE03
      Text in Illustration
      *1 Distance Control Switch - -
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z5-4 - z5-7 Distance control switch ON 2.5 Ω or less
      Distance control switch OFF 1 MΩ or higher

    3. Reinstall the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

    Note

    The spiral cable with sensor sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable with sensor sub-assembly may prevent the airbag from deploying. Be sure to read the pages shown in the brackets.

    Tech Tips



    1. A01G5G1E13
      Text in Illustration
      *a

      Component without harness connected

      (Spiral Cable with Sensor Sub-assembly)
      *b Steering Pad Switch Assembly Side
      *c Vehicle Side

      Remove the spiral cable with sensor sub-assembly.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      z5-4 - H22-12 (DIST) Center 3 Ω or less
      2.5 rotations to the left
      2.5 rotations to the right
      z5-7 - H22-2 (ECC) Center 3 Ω or less
      2.5 rotations to the left
      2.5 rotations to the right

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      z5-4 - H22-12 (DIST) Always 3 Ω or less
      z5-7 - H22-2 (ECC) Always 3 Ω or less

      Tech Tips

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

    4. Reinstall the spiral cable with sensor sub-assembly.


    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the H22 spiral cable with sensor sub-assembly connector.

    2. Disconnect the H75 driving support ECU 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
      H22-12 (DIST) - H75-6 (SPSW) Always 3 Ω or less
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      H22-12 (DIST) or H75-6 (SPSW) - Body ground Always 1 MΩ or higher

    4. Reconnect the H75 driving support ECU assembly connector.

    5. Reconnect the H22 spiral cable with sensor sub-assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H22 spiral cable with sensor 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
      H22-2 (ECC) - Body ground Always 3 Ω or less

    3. Reconnect the H22 spiral cable with sensor sub-assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here