RAIN SENSOR ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT RAIN SENSOR


    1. A004X4BE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rain Sensor)

      Disconnect the T7 rain sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T7-1 (ES) - Body ground Always Below 1 Ω

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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      T7-4 (SIG) - Body ground Power switch on (IG) 7.5 to 8.5 V

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

    4. A004ZYYE02
      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
      T7-3 (AUTO) - T7-1 (ES) Power switch on (IG) Pulse generation

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