Cherokee 4WD L6-4.0L VIN S (1998)
Washer Fluid Level Indicator: Description and Operation
SYSTEM OPERATION
The low washer fluid warning lamp gives an indication when the fluid level in the washer fluid reservoir is too low. The instrument cluster
circuitry controls the lamp based upon a hard-wired input from the washer fluid level sensor.
The washer fluid level sensor uses a float in the reservoir to monitor the fluid level. The up and down action of the float opens or closes the switch
within the washer fluid level sensor that provides a ground signal to the instrument cluster circuitry.
If the instrument cluster circuitry senses a ground input from the washer fluid level sensor for more than about thirty seconds, it turns on the low
washer fluid warning lamp. If the instrument cluster circuitry senses an open circuit from the washer fluid level sensor for more than about thirty
seconds, it turns off the low washer fluid warning lamp. This helps to reduce the effects of fluid sloshing within the reservoir.
