DYNAMIC RADAR CRUISE CONTROL SYSTEM(for 2GR-FE, 2AR-FE) 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 (steering pad switch assembly) while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.

WIRING DIAGRAM

A01W2OLE17
*a Vehicle-to-vehicle Distance Control Switch (Steering Pad Switch Assembly)
*b Spiral Cable Sub-assembly
*c Driving Support ECU Assembly

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 Cruise2 / Data List.

    5. Check the Data List to confirm function of the distance control switch.

      Radar Cruise2
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Distance Control Switch Vehicle-to-vehicle distance control switch status / ON or OFF

      ON: Vehicle-to-vehicle distance control switch pushed

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

      		 -
      OK
      The display changes in accordance with switch operation.

    6. Turn the engine switch off.


    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.

    3. Reinstall the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL CABLE SUB-ASSEMBLY


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

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

    3. Reinstall the spiral cable sub-assembly Click here.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the H22 spiral cable sub-assembly connector.

    2. Disconnect the H194 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
      H22-12 (DIST) - H194-23 (SPSW) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      H22-12 (DIST) or H194-23 (SPSW) - Body ground Always 10 kΩ or higher

    4. Reconnect the H194 driving support ECU assembly connector.

    5. Reconnect the H22 spiral cable sub-assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H22 spiral 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
      H22-2 (ECC) - Body ground Always Below 1 Ω

    3. Reconnect the H22 spiral cable sub-assembly connector.


    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR