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 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

B005BBFE02

CAUTION / NOTICE / HINT

Note


  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Click here

  • 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 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 2 / Data List.

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

      Click here


      Powertrain > Radar Cruise2 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Distance Control Switch Distance control switch signal ON or OFF

      ON: Vehicle-to-vehicle distance control switch pushed

      OFF: Vehicle-to-vehicle distance control switch not pushed

      		 -

      Powertrain > Radar Cruise2 > Data List
      Tester Display
      Distance Control Switch
      OK
      The Data List item shown in the table changes according to the operation of the vehicle-to-vehicle distance control switch (steering pad switch assembly).
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

      Click here

    2. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


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

      Click here

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the I4 spiral with sensor cable sub-assembly connector.

    2. Disconnect the I159 driving support ECU assembly connector.

    3. Disconnect the A35 ECM connector.

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

      Standard Resistance
      for 8AR-FTS
      Tester Connection Condition Specified Condition
      I4-12 (DIST) - I159-23 (SPSW) Always Below 1 Ω
      I4-2 (ECC) - A35-41 (ECCS) Always Below 1 Ω
      I4-12 (DIST) or I159-23 (SPSW) - Body ground Always 10 kΩ or higher
      I4-2 (ECC) or A35-41 (ECCS) - Body ground Always 10 kΩ or higher
      for 3ZR-FAE
      Tester Connection Condition Specified Condition
      I4-12 (DIST) - I159-23 (SPSW) Always Below 1 Ω
      I4-2 (ECC) - A35-35 (ECCS) Always Below 1 Ω
      I4-12 (DIST) or I159-23 (SPSW) - Body ground Always 10 kΩ or higher
      I4-2 (ECC) or A35-35 (ECCS) - Body ground Always 10 kΩ or higher

    5. Connect the A35 ECM connector.

    6. Connect the I159 driving support ECU assembly connector.

    7. Connect the I4 spiral with sensor cable sub-assembly connector.

      Result
      Result Proceed to
      OK A
      NG B

    A

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR