LANE DEPARTURE ALERT SYSTEM(w/ Steering Control) Lane Departure Alert System Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

B005XXDE04

PROCEDURE


  1. READ VALUE USING GTS (CAN BUS CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: System Select / 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

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK FOR DTCs (HEALTH CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Check DTCs.

    6. Turn the power switch off.

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

    B

    GO TO DTC CHART

    A

  3. INSPECT LANE DEPARTURE ALERT MAIN SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)


    1. Remove the lane departure alert main switch (integration control and panel assembly).

      Click here

    2. Inspect the lane departure alert main switch (integration control and panel assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE LANE DEPARTURE ALERT MAIN SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (LANE DEPARTURE ALERT MAIN SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) - DRIVING SUPPORT ECU ASSEMBLY)


    1. Disconnect the L177 lane departure alert main switch (integration control and panel assembly) connector.

    2. Disconnect the L205 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
      L177-5 (ECU) - L205-5 (PBSW) Always Below 1 Ω
      L177-2 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      L177-5 (ECU) or L205-5 (PBSW) - Body ground Always 10 kΩ or higher

    4. Connect the L205 driving support ECU assembly connector.

    5. Connect the L177 lane departure alert main switch (integration control and panel assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR