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LANE DEPARTURE ALERT SYSTEM(w/ Steering Control) Steering Pad Switch Circuit

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DTC Code DTC Name
  Steering Pad Switch Circuit
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DESCRIPTION

The driving support ECU assembly receives a lane departure alert switch signal from the steering pad switch assembly and sends the signal to the forward recognition camera via CAN communication.

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WIRING DIAGRAM

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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.

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PROCEDURE


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    READ VALUE USING GTS (CAN BUS CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: System Select / Can Bus Check.


      1. CAN Bus Check

      Result
      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed B

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    CHECK FOR DTCs (HEALTH CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: System Select / Health Check.

    5. Check DTCs.

    6. Turn the engine switch off.

      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

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    INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

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    2. Inspect the steering pad switch assembly.

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      Result
      Proceed to
      OK
      NG

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    INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

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    2. Inspect the spiral cable sub-assembly.

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      Result
      Proceed to
      OK
      NG

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


    1. Disconnect the O25 spiral cable sub-assembly connector.

    2. Disconnect the Q2 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
      O25-12 (DIST) - Q2-23 (SPSW) Always Below 1 Ω
      O25-2 (ECC) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      O25-12 (DIST) or Q2-23 (SPSW) - Body ground Always 10 kΩ or higher

    4. Connect the Q2 driving support ECU assembly connector.

    5. Connect the O25 spiral cable sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR