LANE DEPARTURE ALERT SYSTEM Main Switch Circuit

DTC Code DTC Name
Main Switch Circuit

DESCRIPTION

  • *1: for LHD

  • *2: for RHD

The lane departure warning camera receives a lane departure alert main switch*1 or lane-keeping assist main switch*2 signal from the telltale light assembly (lane departure alert main switch).

WIRING DIAGRAM

E289627E01

PROCEDURE

  1. CHECK VEHICLE TYPE

    1. Check vehicle type.

    Result

    Result

    Proceed to

    for LHD

    A

    for RHD

    B
    B

    CHECK HARNESS AND CONNECTOR (LANE-KEEPING ASSIST MAIN SWITCH - LANE DEPARTURE WARNING CAMERA AND BODY GROUND)Click here

    A

  2. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY [LANE DEPARTURE ALERT MAIN SWITCH] - LANE DEPARTURE WARNING CAMERA AND BODY GROUND)

    1. Disconnect the G43 telltale light assembly (lane departure alert main switch) connector.

    2. Disconnect the Q13 lane departure warning camera connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G43-6 (ECU) - Q13-4 (LKSW)

      Always

      Below 1 Ω

      G43-6 (ECU) - Body ground

      Always

      10 kΩ or higher

      G43-13 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT TELLTALE LIGHT ASSEMBLY

    1. Remove the telltale light assembly.

      Click here

    2. Inspect the telltale light assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPLACE TELLTALE LIGHT ASSEMBLY

    Click here

  4. CHECK HARNESS AND CONNECTOR (LANE-KEEPING ASSIST MAIN SWITCH - LANE DEPARTURE WARNING CAMERA AND BODY GROUND)

    1. Disconnect the G160 lane-keeping assist main switch connector.

    2. Disconnect the Q13 lane departure warning camera connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G160-6 (ECU) - Q13-4 (LKSW)

      Always

      Below 1 Ω

      G160-6 (ECU) - Body ground

      Always

      10 kΩ or higher

      G160-3 (GND) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT LANE-KEEPING ASSIST MAIN SWITCH

    1. Remove the lane-keeping assist main switch.

      Click here

    2. Inspect the lane-keeping assist main switch.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPLACE LANE-KEEPING ASSIST MAIN SWITCH

    Click here