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Washer Fluid Level Sensor

  1. CHECK WASHER FLUID LEVEL SENSOR. 
    1. Check the connection status of washer fluid level sensor connector.

    Does the low washer fluid warning light illuminate after draining the washer fluid? And does the low washer fluid warning light go off after refilling the washer fluid?

    • Yes: Avail.
    • No: Go to  2.
  2. CHECK WASHER FLUID LEVEL SENSOR INPUT VOLTAGE. 
    1. Using a tester, measure the voltage of the washer fluid level sensor connector.

    Is the voltage approx. 8.5 V or more?

    • Yes: Go to  3.
    • No: Check harness, meter and integrated unit, and replace if necessary.
  3. CHECK LOW WASHER WARNING LIGHT. 

    Does the meter indicator illuminate if you short the washer fluid level sensor connector?

    • Yes: Go to  4.
    • No: Check harness, meter and integrated unit, and replace if necessary.
  4. CHECK RESISTANCE BETWEEN WASHER FLUID LEVEL SENSOR TERMINALS. 
  1. Turn over the mud guard.
  2. Using a tester, measure the resistance of the washer fluid level sensor.
Fig 1: Measuring Resistance Of Washer Fluid Level Sensor
G09484331Courtesy of SUBARU OF AMERICA, INC.
Amount of washer fluid in the tank Standard
No remaining quantity (ON) Less than 10 Ω
There is remaining quantity (OFF) 1 MΩ or more

Is the resistance within the standard?

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