RAIN SENSOR ON-VEHICLE INSPECTION

PROCEDURE

1. Click here

   INSPECT RAIN SENSOR

   
   
   1. 

      Disconnect the rain sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 2 (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 4 (SIG) - Body ground Power switch on (IG) 11 to 14 V

      Table 1. Text in Illustration

      *a	Front view of wire harness connector (to Rain Sensor)

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

   4. 

      Reconnect the rain sensor connector.

   5. Connect an oscilloscope to the rain sensor connector.

   6. Check for pulses.

      OK
      Tester Connection Condition Specified Condition 1 (MPX) - 2 (ES) Power switch on (IG) Pulse generation

      Table 2. Text in Illustration

      *a	Component with harness connected (Rain Sensor)

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