DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Dynamic Radar Cruise Control System (Except HV) - Diagnostic Codes & Circuit Tests >> DYNAMIC RADAR CRUISE CONTROL SYSTEM (for Gasoline Model) >> Distance Control Switch Circuit [12/2019 - 09/2020] >> Procedure

Distance Control Switch Circuit [12/2019 - 09/2020]: Procedure

  1. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Powertrain > Radar Cruise 2 > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle-to-vehicle Distance Control Switch Vehicle-to-vehicle distance control switch signal OFF or ON OFF: Vehicle-to-vehicle distance control switch not pushed
      ON: Vehicle-to-vehicle distance control switch pushed
      -

      Powertrain > Radar Cruise 2 > Data List 

      Tester Display
      Vehicle-to-vehicle Distance Control Switch

      OK

      The value of the Data List item changes according to the operation of the vehicle-to-vehicle distance control switch.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 09/2020] 

    Result: 

    NG 

    See step  2

  2. INSPECT STEERING PAD SWITCH ASSEMBLY 
    1. Remove the steering pad switch assembly.

      Refer to REMOVAL [12/2019 - 10/2022]

    2. Inspect the steering pad switch assembly.

      Refer to INSPECTION [12/2019 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  3

  3. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Remove the spiral cable sub-assembly.

      Refer to REMOVAL [12/2019 - 10/2022]

    2. Inspect the spiral cable sub-assembly.

      Refer to INSPECTION [12/2019 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA AND BODY GROUND) 
    1. Disconnect the R5 forward recognition camera connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H24-6 (DIST) - R5-3 (LKSW) Always Below 1 Ω
      H24-2 (ECC) - Body ground Always Below 1 Ω
      H24-6 (DIST) or R5-3 (LKSW) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [12/2019 - 09/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR