WIPER AND WASHER SYSTEM(w/ Rain Sensor) Headlight Signal Circuit

DTC Code DTC Name
Headlight Signal Circuit

DESCRIPTION

The headlight cleaner control relay detects the status of the low beam headlights.

WIRING DIAGRAM

E270958E02

CAUTION / NOTICE / HINT

Note:

First check that the low beam headlights operate normally.

PROCEDURE

  1. CHECK HEADLIGHT CLEANER CONTROL RELAY

    1. E270107C01

      *a

      Front view of wire harness connector

      (to Headlight Relay)

      Remove the headlight relay from the No. 1 engine room relay block and junction block assembly.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      Headlight relay terminal 2 - Body ground

      Light control switch in head position

      Below 1 V

      Light control switch off

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (HEADLIGHT RELAY [H-LP] - HEADLIGHT CLEANER CONTROL RELAY)

    1. Remove the headlight relay from the No. 1 engine room relay block and junction block assembly.

    2. Disconnect the A48 headlight cleaner control relay connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Headlight relay terminal 2 - A48-1 (HDLO)

      Always

      Below 1 Ω

      Headlight relay terminal 2 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE HEADLIGHT CLEANER CONTROL RELAY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR