RAIN SENSOR > ON-VEHICLE INSPECTION

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1. INSPECT RAIN SENSOR


    E169141E12

  1. Disconnect the T7 rain sensor connector.

  1. 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.

  1. 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

    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.



    E141656E23

  1. Reconnect the rain sensor connector.

  1. Connect an oscilloscope to the rain sensor connector.

  1. Check for pulses.

    OK:
    Tester Connection
    		Condition
    		Specified Condition
    T7-3 (AUTO) - T7-1 (ES)
    		Power switch on (IG)
    		Pulse generation

    Text in Illustration 
    *a
    		Component with harness connected
    (Rain Sensor)
    If the result is not as specified, the rain sensor may have a malfunction.