DYNAMIC RADAR CRUISE CONTROL SYSTEM 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 while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.

WIRING DIAGRAM

A01I1UAE03

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING TECHSTREAM (MODE CHANGE SWITCH)


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the Techstream on.

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

    5. Read the Data List according to the display on the Techstream.

      Radar Cruise
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      MODE Change Switch Vehicle-to-vehicle distance control switch signal / ON or OFF

      ON: Vehicle-to -vehicle distance control switch on

      OFF: Vehicle-to -vehicle 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 (VEHICLE-TO-VEHICLE DISTANCE CONTROL SWITCH) Click here

    OK

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

  2. INSPECT STEERING PAD SWITCH ASSEMBLY (VEHICLE-TO-VEHICLE DISTANCE CONTROL SWITCH)


    1. Remove the steering pad switch assembly (vehicle-to-vehicle distance control switch) Click here.

    2. Inspect the steering pad switch assembly (vehicle-to-vehicle distance control switch) Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY (VEHICLE-TO-VEHICLE DISTANCE CONTROL SWITCH) Click here

    OK

  3. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY


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

    2. Inspect the spiral cable with sensor sub-assembly Click here.


    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 I28 spiral cable with sensor sub-assembly connector.

    2. Disconnect the I187 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
      I28-12 (DIST) - I187-6 (SPSW) Always 2.5 Ω or less
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      I28-12 (DIST) or I187-6 (SPSW) - Body ground Always 1 MΩ or higher

    4. Reconnect the I187 driving support ECU assembly connector.

    5. Reconnect the I28 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 I28 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
      I28-2 (ECC) - Body ground Always 2.5 Ω or less

    3. Reconnect the I28 spiral cable with sensor sub-assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here