DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

The distance control switch sets the vehicle-to-vehicle distance setting. The distance control switch is installed in the steering pad switch. The vehicle-to-vehicle distance setting can be changed by operating the distance control switch in the steering pad switch while the dynamic radar cruise control system is in operation.

WIRING DIAGRAM

A006X3XE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. A006UUZE03

      If there are any defects as follows, replace the spiral cable with a new one: scratches, cracks, dents or chips on the connector or spiral cable.

    2. Check the spiral cable.


      1. Set the spiral cable to the center position Click here.

      2. Rotate the spiral cable 2.5 times clockwise and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise and measure the resistance according to the value(s) in the table below.

        Note

        As the spiral cable may break, do not rotate the spiral cable more than the specified amount.

        Standard Resistance
        Tester Connection Condition Specified Condition
        4 (DIST) - 11 (DIST) Always Below 1 Ω
        6 (ECC) - 2 (ECC)

      3. Set the spiral cable to the center position and rotate the spiral cable 2.5 times clockwise. Then, while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        4 (DIST) - 11 (DIST) Always Below 1 Ω
        6 (ECC) - 2 (ECC)

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  2. INSPECT STEERING PAD SWITCH ASSEMBLY (DISTANCE CONTROL SWITCH)


    1. A006UDFE01
      Text in Illustration
      *1 Distance Control Switch

      Remove the steering pad switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (DIST) - 6 (ECC) Distance control switch on Below 2.5 Ω
      Distance control switch off 1 MΩ or higher

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - DRIVING SUPPORT ECU AND BODY GROUND)


    1. A006TCKE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)
      *2

      Front view of wire harness connector

      (to Driving Support ECU)

      Disconnect the D5 spiral cable connector.

    2. Disconnect the D14 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D5-11 (DIST) - D14-7 (MODE) Always Below 1 Ω
      D5-2 (ECC) - Body ground
      D5-11 (DIST) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE DRIVING SUPPORT ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE DRIVING SUPPORT ECU Click here