No windshield washer fluid

There is a electric motor that pumps washer fluid . Located in the bottom of the washer fluid tank .
Wash Operation (Front and Rear Wipers)
The front and rear washer systems use the same windshield washer fluid pump. When either the front or rear wiper is in the washer position voltage will be supplied to one side of the windshield washer fluid pump (depending on whether it is front or rear), while the other side of the pump is grounded.
At this point, the windshield washer fluid pump sprays solvent onto the windshield. When the front or rear washer is activated, the BCM receives an input from the switch that is activated. The BCM will control the wipers while in the WASH mode. The BCM will control either the front wiper relay or the rear wiper relay to turn on the wipers. The windshield wipers operate at low speed for 3 swipes and returns to the park position.

When turning on the washers do you hear the motor run ? Have some one try it while you listen at the washer fluid tank ! These pump motors do go bad .
turn OFF the ignition.
Disconnect the harness electrical connector of the windshield washer fluid pump.
Connect a test lamp from the windshield washer pump control circuit to a good ground .
Turn ON the ignition, with the engine OFF.
Press the front washer switch.
Does the test lamp illuminate?
YES or NO !

There's a few things you might want to check. First, check to make sure the washer fluid reservoir is completely (assuming you hadn't already done that). After you are certain the reservoir is full, look for any possible leaks...either the reservoir or the hoses going from the tank to the windshield. If the tank and hoses are intact, turn on your windshield wipers...then try running the pump. If no washer fluid comes out, and for this you might need another person to assist you, try running the pump again...listening to make sure the pump is in fact running. If the pump does run but still no fluid comes out, inspect all of the hoses as well as all of the outlets where the fluid sprays the windshield...it is possible that the outlets may be plugged. Some common reasons for the outlets to be plugged...debris, dirt/mud, and/or wax (has anyone recently waxed your Freightliner?). Just to be sure, using a small needle or even a wire, ensure each outlet is cleared and not obstructed with anything. After that, try running the pump again. If no luck, try removing the hoses going from the tank to the windshield. Once removed, using something like a wire coat hanger, clear each hose for any possible obstruction. Reattach hoses and try running pump again. If still no luck, I would guess the problem might be located with the washer pump itself. Before opting to replace the pump, if you believe that is the problem and the pump just doesn't operate, check all fuses and inspect any/all wiring connections.

Good luck
Jason

There is a seperate tank.

Is your wiper fluid level good?Look for leaks at pump,it's connected to container,also check your hoses leaving pump to windshield,could be loose or binding.

What fluid do you have in the tanks? Is it the summer formula which may freeze below 32 deg. F? Or, I would check fuses for the windshield wiper fluid pumps.

Also, check with a test light to see if the test light goes on when the backprobed connection to the windshield wiper fluid pump should be energized with the button or switch inside the vehicle.

If the electric pumps which should wrrrr when working are bad, replace at or near the tanks.

The most common problem I find in this season, is having summer 32 deg. F freezing windshield wiper fluid in the tank rather than -20 deg. F freezing windshield wiper fluid.

Try to warm up the car by parking it in a heated garage until the windshield wiper fluid thaws. Then, try to use it all up, and add the 'winter' vs. the 'summer' formula of windshield wiper fluid.

If this does not solve the problem, the pump might be burnt out, in my experience.

You should hear a humming sound as you depress the button for windshield wiper fluid inside of the car.

Good luck on this repair.

it's likely the tiny motor/pump located at the bottom of the tank that has failed. to confirm this have some turn on the washer fluid switch and test for voltage at the pump. there are several aftermarket pumps you can use as a replacement.

Check your fuses

First thing to check is the fuse and relay.