RAIN SENSOR > ON-VEHICLE INSPECTION

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1. INSPECT RAIN SENSOR


    E169141E03

  1. Disconnect the H2 rain sensor connector.
    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Rain Sensor)

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H2-1 (ES) - Body ground
    		Always
    		Below 1 Ω

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

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H2-4 (SIG) - Body ground
    		Engine switch ON
    		11 to 14 V

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



    E141656E06

  1. Reconnect the rain sensor connector.

  1. Connect an oscilloscope to the rain sensor connector.
    Text in Illustration 
    *1
    		Component with harness connected
    (Rain Sensor)

  1. Check for pulses.

    OK:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H2-3 (AUTO) - H2-1 (ES)
    		Engine switch ON
    		Pulse generation

    If the result is not as specified, replace the rain sensor.