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Home >> Toyota >> 2020 >> RAV4 XLE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Automatic High Beam System - Diagnostic Codes & Symptom Tests) >> Automatic High Beam System >> Automatic High Beam System does not Operate or Operation Indicator does not Illuminate [08/2020 - 12/2021] >> Procedure

Automatic High Beam System does not Operate or Operation Indicator does not Illuminate [08/2020 - 12/2021]: Procedure

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  1. CHECK VEHICLE CONTROL HISTORY (FRONT RECOGNITION CAMERA (FRONT LIGHTING CONTROL)) 
    1. Check for vehicle control history.

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X204E is not output A
      X204E is output B

    Result: 

    B 

    GO TO VEHICLE CONTROL HISTORY 

    Refer to VEHICLE CONTROL HISTORY [08/2020 - 12/2021] 

    Result: 

    A 

    See step  2

  2. CHECK AUTOMATIC HIGH BEAM INDICATOR 
    1. Check the operation of the automatic high beam indicator.
      1. Turn the ignition switch to ON.
      2. Turn the light control switch to the AUTO or HEAD position.
      3. Cover the automatic light control sensor to turn the low beam headlights on.
      4. Move the dimmer switch to the high position.
      5. Press the auto high beam switch.

      Result

      Result Proceed to
      OK (The automatic high beam indicator and the auto high beam switch indicator illuminate) A
      NG (Automatic high beam indicator does not illuminate) B
      NG (Auto high beam switch indicator does not illuminate) C
      NG (Automatic high beam indicator and auto high beam switch indicator do not operate) D

    Result: 

    B 

    See step  5

    Result: 

    C 

    GO TO OTHER PROBLEM (Proceed to Automatic High Beam Switch Indicator does not Come ON) 

    Refer to Automatic High Beam Switch Indicator does not Come ON [08/2020 - 12/2021] 

    Result: 

    D 

    See step  7

    Result: 

    A 

    See step  3

  3. READ VALUE USING TECHSTREAM 
    GTY770871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Forward Recognition Camera
    (Automatic High Beam Sensor)
    *2 Work Light or Equivalent
    *a 100 mm (3.94 in.) or less
    1. Shine a light on the automatic high beam sensor.

      HINT: 

      If troubleshooting is being performed in a bright area, such as outside on a sunny day, it will not be necessary to perform this step.

    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical / Main Body / Data List.
    6. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -

      Body Electrical > Main Body > Data List 

      Tester Display
      Auto H Beam STS0

      OK

      "Daytime" is displayed on the Techstream.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to REMOVAL [11/2018 - 12/2021]

    Result: 

    OK 

    See step  4

  4. READ VALUE USING TECHSTREAM 
    GTY752756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Cardboard or Equivalent Object
    *a 150 mm (5.91 in.) or more
    *b 3 mm (0.118 in.) or more
    1. Cover the automatic high beam sensor with an opaque object, such as cardboard.
      NOTE:
      • Make sure that there is no clearance between the cardboard or equivalent object and the area of the windshield glass in front of the automatic high beam sensor.
      • If there is any clearance, light may shine on the automatic high beam sensor and the value of the Data List will not change.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical / Main Body / Data List.
    6. Read the Data List according to the display on the Techstream.

      HINT: 

      As it may take time for the values in the Data List to change, wait at least 10 seconds before reading the Data List.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -

      Body Electrical > Main Body > Data List 

      Tester Display
      Auto H Beam STS0

      OK

      "Speed" is displayed on the Techstream.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

    Result: 

    NG 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to REMOVAL [11/2018 - 12/2021]

  5. READ VALUE USING TECHSTREAM 
    1. Using the Techstream, read the Data List.

      Refer to DATA LIST / ACTIVE TEST [08/2020 - 12/2021]

      Chassis > Front Recognition Camera > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Front Recognition Camera High Temperature 2 Whether high temperature malfunction of forward recognition camera exists or not Not High Temperature or High Temperature Not High Temperature: Approximately 65°C (149°F) or less
      High Temperature: Approximately 65°C (149°F) or higher      		 If this item is "High Temperature", the automatic high beam system will be temporarily unavailable. If this does not improve even if the inside of the vehicle is left cooled for at least 10 minutes, the forward recognition camera may be malfunctioning.
      HINT: 
      In summertime, the windshield glass may reach 100°C (212°F) or higher

      Chassis > Front Recognition Camera > Data List 

      Tester Display
      Front Recognition Camera High Temperature 2

      OK

      Normal condition listed above is displayed.

      HINT: 

      When "High Temperature" is displayed, move the vehicle to a cool area and turn the ignition switch off to allow the temperature of the front recognition camera to decrease.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    END (THE SYSTEM STOPPED OPERATING DUE TO HIGH TEMPERATURES) 

    Result: 

    OK 

    See step  6

  6. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Automatic High Beam Indicator (Green) Automatic high beam indicator OFF or ON -

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Automatic High Beam Indicator (Green)

      OK

      The automatic high beam indicator illuminates and turns off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [08/2020 - 12/2021]

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2018 - 10/2022]

  7. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto High Beam Main Switch Auto high beam switch signal OFF or ON OFF: Auto high beam switch not pressed
      ON: Auto high beam switch pressed      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Auto High Beam Main Switch

      OK

      Normal conditions listed above are displayed.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  8

  8. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -

      Body Electrical > Main Body > Data List 

      Tester Display
      Auto H Beam STS0

      OK

      "Daytime" or "Speed" is displayed on the Techstream.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [08/2020 - 12/2021]

    Result: 

    NG 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to REMOVAL [11/2018 - 12/2021]

  9. INSPECT AUTO HIGH BEAM SWITCH 
    1. Remove the auto high beam switch.

      Refer to REMOVAL [11/2018 - ]

    2. Inspect the auto high beam switch.

      Refer to INSPECTION [11/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE AUTO HIGH BEAM SWITCH 

    Refer to REMOVAL [11/2018 - ]

    Result: 

    OK 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (AUTO HIGH BEAM SWITCH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) 
    1. Disconnect the G42 auto high beam switch connector.
    2. Disconnect the G44 main body ECU (multiplex network body ECU) connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G42-5 (+B) - G44-26 (AHBI) Always Below 1 Ω
      G42-5 (+B) or G44-26 (AHBI) - Body ground Always 10 kΩ or higher
      G42-2 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [08/2020 - 12/2021]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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