LANE DEPARTURE ALERT SYSTEM Lane Departure Alert System Circuit

DESCRIPTION

When the ignition switch is ON (IG), power is supplied to the pre-crash safety city sensor.

WIRING DIAGRAM

A004F6QE85
*1 from IG1 NO. 1 Relay
*2 GAUGE
*3 Pre-crash Safety City Sensor

CAUTION / NOTICE / HINT

Note


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

  • When replacing the pre-crash safety city sensor, replace it with a new one and be sure to initialize the settings. If a pre-crash safety city sensor which was installed to another vehicle is used, the information stored in the pre-crash safety city sensor will not match the information from the vehicle and, as a result, a DTC may be stored.

  • If the pre-crash safety city sensor has been replaced, or the windshield glass has been replaced or removed/installed, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

  • Perform adjustment using "ONE TIME RECOGNITION" or "SEQUENTIAL RECOGNITION".


PROCEDURE


  1. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage.

      Standard voltage
      11 to 14 V (IG OFF)

    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.

      Tech Tips

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


    NEXT

  2. CHECK PRE-CRASH SAFETY CITY SENSOR


    1. Check pre-crash safety city sensor.

      Note

      DTCs may be output when connectors are disconnected during inspection. Therefore, make sure to clear the DTCs using the GTS once the inspection has been completed.


      1. A004G0GE02
        Text in Illustration
        *a

        Front view of wire harness connector

        (to Pre-crash Safety City Sensor)

        Disconnect the pre-crash safety city sensor connector.

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        M6-7 (IG1) - Body ground Ignition switch ON (IG) 11 to 14 V
        M6-7 (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
        M6-10 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CAN COMMUNICATION SYSTEM


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

      Result
      Result Proceed to
      CAN communication system DTCs are output A
      CAN communication system DTCs are not output B

    A

    GO TO CAN COMMUNICATION SYSTEM Click here

    B

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