LANE DEPARTURE ALERT SYSTEM Lane Departure Alert System Circuit

DTC Code DTC Name
Lane Departure Alert System Circuit

DESCRIPTION

When the ignition switch is ON, power is supplied to the pre-collision city sensor.

WIRING DIAGRAM

E354074E01

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

  1. INSPECT BATTERY VOLTAGE

    1. Measure the battery voltage with the ignition switch off.

      Standard voltage

      11 to 14 V

    2. Using the parts location and system diagram, check the system for blown-out fuses, open or short circuits in the wire harness(es) and connectors that are not properly connected by performing a visual check.

      Tip:

      If the voltage is 11 V or less, replace or recharge the battery before proceeding to the next step.

  2. CHECK PRE-COLLISION CITY SENSOR

    1. U184791E01

      Disconnect the pre-collision city sensor connector.

      Table 1. Text in Illustration

      *a

      Front view of wire harness connector

      (to Pre-collision City Sensor)

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      Q12-7 (IG1) - Body ground

      Ignition switch ON

      11 to 14 V

      Q12-7 (IG1) - Body ground

      Ignition switch off

      Below 1 V

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q12-10 (GND) - Body ground

      Always

      Below 1 Ω

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK CAN COMMUNICATION SYSTEM

    1. Use the GTS to check if the CAN communication system is functioning normally (Click here).

    Table 2. Result

    Result

    Proceed to

    CAN communication system DTCs are not output

    A

    CAN communication system DTCs are output

    B

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click hereClick here)

    GO TO CAN COMMUNICATION SYSTEM

    (Click here)