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Daytime Running Light Circuit [10/2023 - 11/2024]: Procedure

WARNING: This page is about a different car, the 2025 Toyota RAV4, 2024 Toyota RAV4, 2023 Toyota RAV4, and 2022 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VEHICLE TYPE 
    1. Check the vehicle type.

      Result

      Result Proceed to
      for Triple Beam Headlight A
      for Single Beam Headlight (w/o Accessory Light) B
      for Single Beam Headlight (w/ Accessory Light) C

    Result: 

    B 

    See step  7

    Result: 

    C 

    See step  13

    Result: 

    A 

    See step  2

  2. CHECK OPERATION (LOW BEAM HEADLIGHTS) 
    1. Check the operation of the low beam headlights.

      OK

      The low beam headlights operate normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    OK 

    See step  3

  3. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      Type A A
      Type B B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  4

  4. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  6

  5. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the A62 headlight assembly LH connector.
    2. Disconnect the A61 headlight assembly RH connector.
    3. Disconnect the 4F instrument panel junction block assembly connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A62-3 (B) - 4F-28 Always Below 1 Ω
      A61-3 (B) - 4F-28 Always Below 1 Ω
      A62-3 (B) or 4F-28 - Body ground Always 10 kΩ or higher
      A61-3 (B) or 4F-28 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  12

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  7. CHECK OPERATION (LOW BEAM HEADLIGHTS) 
    1. Check the operation of the low beam headlights.

      OK

      The low beam headlights operate normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    OK 

    See step  8

  8. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      Type A A
      Type B B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  9

  9. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  11

  10. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. *1: Turn Light for LED Type
    2. *2: Turn Light for Bulb Type
    1. Disconnect the A98*1 or A99*2 headlight assembly LH connector.
    2. Disconnect the A96*1 or A97*2 headlight assembly RH connector.
    3. Disconnect the 4F instrument panel junction block assembly connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      HEADLIGHT FOR LED TYPE

      Tester Connection Condition Specified Condition
      A98-7 (B) - 4F-28 Always Below 1 Ω
      A96-7 (B) - 4F-28 Always Below 1 Ω
      A98-7 (B) or 4F-28 - Body ground Always 10 kΩ or higher
      A96-7 (B) or 4F-28 - Body ground Always 10 kΩ or higher
      HEADLIGHT FOR BULB TYPE

      Tester Connection Condition Specified Condition
      A99-3 (B) - 4F-28 Always Below 1 Ω
      A97-3 (B) - 4F-28 Always Below 1 Ω
      A99-3 (B) or 4F-28 - Body ground Always 10 kΩ or higher
      A97-3 (B) or 4F-28 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY895506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Instrument Panel Junction Block Assembly)    		 - -
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [10/2023 - ]

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4F-28 - A-25 (DRL) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [10/2023 - ]

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    Refer to REMOVAL [10/2023 - ]

  13. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      Type A A
      Type B B

    Result: 

    B 

    See step  15

    Result: 

    A 

    See step  14

  14. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights or accessory lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  16

  15. 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 / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Daytime Running Light

      OK

      Daytime running lights or accessory lights illuminate.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [12/2021 - ]

    Result: 

    NG 

    See step  16

  16. CHECK HARNESS AND CONNECTOR (DRL RELAY - BATTERY) 
    1. Remove the DRL relay.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      1 (DRL relay) - Body ground Ignition switch off 11 to 14 V
      5 (DRL relay) - Body ground Ignition switch off 11 to 14 V
      GTY510431Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to DRL Relay)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  17

  17. INSPECT DRL RELAY 
    1. Remove the DRL relay.
    2. Inspect the DRL relay.

      Refer to ON-VEHICLE INSPECTION [02/2019 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE DRL RELAY 

    Result: 

    OK 

    See step  18

  18. CHECK HARNESS AND CONNECTOR (DRL RELAY - HEADLIGHT ASSEMBLY) 
    1. Remove the DRL relay.
    2. Disconnect the A98 headlight assembly LH connector.
    3. Disconnect the A96 headlight assembly RH connector.
    4. Disconnect the B16 daytime running light assembly LH connector.
    5. Disconnect the B15 daytime running light assembly RH connector.
    6. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 (DRL relay) - A98-7 (B) Always Below 1 Ω
      3 (DRL relay) or A96-7 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  19

  19. CHECK HARNESS AND CONNECTOR (DRL RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Remove the DRL relay.
    2. Disconnect the 4F instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2 (DRL relay) - 4F-28 Always Below 1 Ω
      2 (DRL relay) or 4F-28 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  20

  20. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY895506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Instrument Panel Junction Block Assembly)    		 - -
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [10/2023 - ]

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4F-28 - A-25 (DRL) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [10/2023 - ]

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    Refer to REMOVAL [10/2023 - ]

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