RAIN SENSOR ON-VEHICLE INSPECTION


  1. INSPECT RAIN SENSOR


    1. A01EVF1E14
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rain Sensor)

      Disconnect the S1 rain sensor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S1-4 (SIG) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S1-2 (ES) - Body ground Always Below 1 Ω

      If the result is not as specified, repair or replace the harness or connector.

    4. A01EX5OE26
      Text in Illustration
      *a

      Component with harness connected

      (Rain Sensor)

      Reconnect the rain sensor connector.

    5. Connect an oscilloscope to the rain sensor connector.

    6. Check for pulses.

      OK
      Tester Connection Condition Specified Condition
      S1-1 (MPX) - S1-2 (ES) Ignition switch ON Pulse generation

      If the result is not as specified, the rain sensor may have a malfunction.