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

DTC Code DTC Name
Washer Signal Circuit

DESCRIPTION

The headlight cleaner control relay receives the windshield washer operation signal.

WIRING DIAGRAM

E270837E01

PROCEDURE

  1. CHECK OPERATION

    1. Check the operation of the front wiper and washer system.

    Result

    Proceed to

    Front wiper and washer system operates normally

    Front wiper and washer system does not operate
    Front wiper and washer system does not operate

    GO TO PROBLEM SYMPTOMS TABLE

    Click hereClick hereClick here

    Front wiper and washer system operates normally

  2. CHECK HEADLIGHT CLEANER CONTROL RELAY

    1. E270952C01

      *A

      for RH Side Type

      *B

      for LH Side Type

      *a

      Front view of wire harness connector

      (to Windshield Washer Motor and Pump Assembly)

      Disconnect the windshield wiper switch assembly connector.

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

      Standard Voltage

      Table 1. for RH Side Type

      Tester Connection

      Switch Condition

      Specified Condition

      G10-7 (WF) - Body ground

      Ignition switch ON

      11 to 14 V

      Ignition switch off

      Below 1 V
      Table 2. for LH Side Type

      Tester Connection

      Switch Condition

      Specified Condition

      G61-4 (WF) - Body ground

      Ignition switch ON

      11 to 14 V

      Ignition switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick hereClick here

    NG

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - WINDSHIELD WIPER SWITCH ASSEMBLY)

    1. Disconnect the A48 headlight cleaner control relay connector.

    2. Disconnect the G10*1 or G61*2 windshield wiper switch assembly connector.

      • *1: for RH Side Type

      • *2: for LH Side Type

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

      Standard Resistance

      Table 3. for RH Side Type

      Tester Connection

      Condition

      Specified Condition

      A48-5 (FRWA) - G10-7 (WF)

      Always

      Below 1 Ω

      A48-5 (FRWA) - Body ground

      Always

      10 kΩ or higher
      Table 4. for LH Side Type

      Tester Connection

      Condition

      Specified Condition

      A48-5 (FRWA) - G61-4 (WF)

      Always

      Below 1 Ω

      A48-5 (FRWA) - 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