DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

The distance control switch sets the 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 operating.

WIRING DIAGRAM

A01J8P1E24

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DISTANCE CONTROL SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / Cruise / Data List / Distance Control Switch.

    5. Check the Data List proper functioning 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
      When the distance control switch is operated, the display changes as shown above.

    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.

    2. Disconnect the z9 connector from the spiral cable.

      A01JAWGE01
      Text in Illustration
      *1

      Component without harness connected

      (Steering Pad Switch RH)

      		 *2 Distance Control Switch

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z9-4 - z9-6 Distance control switch ON Below 2.5 Ω
      z9-4 - z9-6 Distance control switch OFF 10 kΩ or higher

    4. Reinstall 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 brackets.


    1. A01JAYKE64
      Text in Illustration
      *1

      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
      Tester Connection Condition Specified Condition
      z9-4 - L52-11 (DIST) The spiral with sensor cable sub-assembly is centered Below 1 Ω
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the right
      z9-6 - L52-2 (ECC) The spiral with sensor cable sub-assembly is centered Below 1 Ω
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
      The spiral with sensor cable sub-assembly position is 2.5 rotations to the right

      Tech Tips

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

    3. Install the spiral with sensor cable sub-assembly Click here.


    NG

    REPLACE SPIRAL WITH CABLE SUB-ASSEMBLY Click here

    OK

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


    1. A01JCIZE04

      Disconnect the driving support ECU 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
      Tester Connection Condition Specified Condition
      L60-6 (SPSW) - L52-11 (DIST) Always Below 1 Ω
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)
      *2

      Front view of wire harness connector

      (to Driving Support ECU)

    4. Reconnect the driving support ECU connector.

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


    NG

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

    OK

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


    1. A01J8V1E12

      Disconnect the spiral with sensor cable 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
      L52-2 (ECC) - Body ground Always Below 1 Ω
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

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


    NG

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

    OK

    REPLACE DRIVING SUPPORT ECU Click here