check that valves are fully open
Your faucet may be clogged. If you have good pressure elsewhere in the house, this is your most likely culprit. You may just have crappy overall water pressure. If you don't have good pressure in the tub or elsewhere, consult with a plumber about installing a pressure tank to increase your water pressure.
Absolutely. Every built-in dishwasher can heat water to a higher temperature than what dispenses from your kitchen sink.
It needs at least 38 psi of incoming water.
Dishwasher line is hot water. Tie ice maker into 1/2 inch cold line going to kitchen sink.
Shut the electrical breaker off and lock it out. Undo the drain hose under your sink. Shut off the water supply under the sink to your dishwasher.Take the bottom front panel off the dishwasher. Undo the water supply attachment to your dishwasher. Open the door to your dishwasher and take out the screws attaching the dishwasher to the counter. Undo the electrical connection to the dishwasher. Slide the dishwasher out. You may have to adjust the legs to get the dishwasher out. If you have a new dishwasher to install, read the directions for installing it, do the reverse to take the old one out.
turn up the water pressure
Looking at it, it should be on the left, but it doesn't have to be. If there is a dishwasher line, that would be the hot.
There may be a shut off under the kitchen sink. If not, the whole house will need to be shut off.
Where do you not have pressure? At the sink? Probably some rust came loose and is blocking the screen in the end of the spout.
It provides it's own pressure. It has it's own pump which is used to create the needed pressure to wash the dishes.
USING THE DISWASHER.