LANE DEPARTURE ALERT SYSTEM(w/ Steering Control) Power Source Circuit

DESCRIPTION

This circuit provides power to operate the forward recognition camera.

WIRING DIAGRAM

B003W1WE18

CAUTION / NOTICE / HINT

Note


  • w/ Stop and Start System:

    As the forward recognition camera is supplied power from the engine stop and start ECU, make sure that the stop and start system is not malfunctioning before performing the following inspection procedure.

  • w/o Stop and Start System:

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)


    1. B003VBGC40
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the S18 forward recognition camera connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S18-7 (IGB) - Body ground Engine switch on (IG)

      11 to 14 V*1

      10.5 to 16 V*2
      *1: w/o Stop and Start System
      *2: w/ Stop and Start System

    4. Turn the engine switch off.

    5. Connect the S18 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - BODY GROUND)


    1. B003VBGC41
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the S18 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S18-10 (GND) - Body ground Always Below 1 Ω

    3. Connect the S18 forward recognition camera 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