WIPER AND WASHER SYSTEM Rain Sensor Circuit

DTC Code DTC Name
Rain Sensor Circuit

DESCRIPTION

The windshield wiper relay assembly receives a signal from the rain sensor to control the auto wiper system.

WIRING DIAGRAM

E226326E03

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - RAIN SENSOR)

    1. Disconnect the E95 windshield wiper relay assembly connector.

    2. Disconnect the O7 rain sensor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E95-14 (MPX1) - O7-1 (MPX)

      Always

      Below 1 Ω

      E95-14 (MPX1) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (RAIN SENSOR - IG CIRCUIT AND BODY GROUND)

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      O7-4 (SIG) - Body ground

      Ignition switch ON

      11 to 14 V

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      O7-2 (ES) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT RAIN SENSOR

    1. E257042C01

      *a

      Component with harness connected

      (Rain Sensor)

      Reconnect the O7 rain sensor connector.

    2. Connect an oscilloscope to the rain sensor connector.

    3. Check for pulses.

      OK

      Tester Connection

      Condition

      Specified Condition

      O7-1 (MPX) - O7-2 (ES)

      Ignition switch ON

      Pulse generation

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick here

    NG

    REPLACE RAIN SENSOR

    Click here