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

A01I2IJE17

INSPECTION PROCEDURE

Note

When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

PROCEDURE


  1. READ VALUE USING TECHSTREAM (DISTANCE CONTROL SWITCH)


    1. Connect the Techstream to the DLC3.

    2. Turn the power 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
      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 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.

    2. Inspect the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY (STEERING ANGLE SENSOR)


    1. Remove the spiral cable with sensor sub-assembly (steering angle sensor) Click here.

    2. Inspect the spiral cable with sensor sub-assembly (steering angle sensor) Click here.


    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY (STEERING ANGLE SENSOR) Click here

    OK

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


    1. Disconnect the I183 driving support ECU assembly connector.

    2. Disconnect the I28 spiral cable with sensor sub-assembly (steering angle sensor) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      I183-6 (SPSW) - I28-12 (DIST) Always 2.5 Ω or less
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      I183-6 (SPSW) or I28-12 (DIST) - Body ground Always 1 MΩ or higher

    4. Reconnect the I183 driving support ECU assembly connector.

    5. Reconnect the I28 spiral cable with sensor sub-assembly (steering angle sensor) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01I3TME03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral Cable with Sensor Sub-assembly (Steering Angle Sensor))

      Disconnect the I28 spiral cable with sensor sub-assembly (steering angle sensor) 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 1 MΩ or higher

    3. Reconnect the I28 spiral cable with sensor sub-assembly (steering angle sensor) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here