DYNAMIC RADAR CRUISE CONTROL SYSTEM Distance Control Switch Circuit

DESCRIPTION

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

A000N6QE04
*a Vehicle-to-vehicle Distance Control Switch (Steering Pad Switch Assembly)
*b Driving Support ECU Assembly
*c Steering Pad Switch Assembly
*d Spiral with Sensor Cable Sub-assembly

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 power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Radar Cruise / Data List.

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

      Radar Cruise
      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 on

      OFF: Vehicle-to-vehicle distance control switch off

      		 -
      OK
      The Data List item shown in the table changes according to the operation of the steering pad switch assembly (vehicle-to-vehicle distance control switch).

    OK

    PROCEED TO NEXT INSPECTION PROCEDURE 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.


    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.


    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 AND BODY GROUND)


    1. Disconnect the N31 spiral cable sub-assembly connector.

    2. Disconnect the N173 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N31-12 (DIST) - N173-23 (SPSW) Always Below 1 Ω
      N31-12 (DIST) or N173-23 (SPSW) - Body ground Always 10 kΩ or higher
      N31-2 (ECC) - Body ground Always Below 1 Ω

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR