There are a few signs that may indicate a bad Headlights Washer Pump:
No fluid coming out of the washer nozzle: If the washer fluid pump is not working, you may notice that no fluid is coming out of the washer nozzle when you activate the windshield wipers.
Weak or inconsistent spray: If the washer fluid pump is not working properly, you may notice that the spray of fluid is weak or inconsistent.
No noise when the washer fluid is activated: The washer fluid pump usually makes a noise when it is activated. If you do not hear this noise, it may indicate that the pump is not working.
Warning light on the dashboard: Some vehicles have a warning light that comes on when the washer fluid pump is not working. Check your vehicle's manual to see if this is the case.
If you notice any of the above signs, it is best to have the washer fluid pump inspected and replaced if necessary by a qualified mechanic.
It's also important to keep in mind that the problem may not be caused by the pump but by other factors such as a clogged nozzle, a low fluid level, or a malfunctioning switch. It's always best to have the car inspected by a professional to determine the cause of the problem.