Front Bumper MIssing Part

if you are just changing a bulb I believe its a9005 or9006 hi or low beam if you oar taking lense out you have to the shield under bumper then the screws on inner fender where it attaches to front bumper then theres a 10 mm size bolt in corner of bumper that goes strait up into fender once that's out, pull on side of bumper. itll pop out theres clips that hold it on. then you can get to bolt on bottom of light,get that one and top ones and you can pull lense off. just smack bumper to put back on you only need to pull back side your changing

New push pins and drill a couple hole on both sides of crack to install zip ties this will hold or you need to replace the cracked piece (bumper cover etc)

I believe there will be many screws under the car with the splash shield that must be removed. Remove screws/retainers from the fender well liner in each wheel well, but only toward the front (no need to remove the entire thing). Behind the fender liner toward the front of the car you'll see some screws/clips holding the bumper to the front/bottom of the fender.
You'll need to remove each turn signal in the front of the bumper with a long phillips screwdriver. Use a flashlight to look in from the middle of the lower bumper and you'll see a hole where the screw driver goes in (loosen the screw, but it probably wont come out). Pop the lamp assembly out, but don't force it- the opposite side of the lamp has a tab that fits in a slot to help hold it in place.
Look straight back from where the turn signal lamps were removed and you'll see 2 bolts on a metal bracket. There are 2 on each side, behind each lamp. You'll need some long extensions to get all the way in there. Be sure to support the bumper as you take these out, because they are the main support points for the bumper assembly.
Once these are out, the bumper should come off, or at lease you'll see if there were any small screws you missed. FYI, I left almost all of the screws out of my bumper (except one on each side where it attaches to the fender), so all I have to do is remove those 4 main bolts behind the turn signal lights to drop the bumper.

The bumper shouldn't be in the way. Usually the liner is attached only inside the wheel well. You may have to pull the tire off to make it easier. Plastic clips or pins usually hold the liner in place, or it may have screws. Go by the opposite side, if any part of your old liner is missing attachers or pieces.

go to a chrysler dealer's parts desk. ask them to show you an illustrated parts breakdown of your bumper. then you will see what parts you are missing and have the part numbers, prices, and know how much time it would take to fix it. they will generally print you a page off for free.

You should remove the bumper cover and take a look and make sure that the cover is not broken, its all plastic and the hold down arms sometimes break off and bumper will hang, also look for missing or loose fastners,

It should be attached to the front of the lower radiator support behind the front fascia. Look for the two wire pigtail harness hanging loose if the sensor is missing or you can't find it.

if im not mistaken, its going to be a little tricky to do with the front bumper on. but you should have 2 10mm bolts on the top, take them out. if it has the removable side marker light, take the small screw out of the top, and remove it. you will have to take the bumper loose on the ends, then pull it out torwards you and down. you should find another bolt going through the fender into the headlamp, at the front of the fender behind the bumper. then there is another bolt at the front of the lamp under it, behind the bumper. its kinda tough to get to. unplug it and try to worm it out. the easiest way is to have the bumper off. but that is only an option if you cant get to the bolts w/o messing something up.

try this link for the bumper cover.. How to install front bumper cover on 2002 Toyota Google Search .
or this link..
How to install front passenger side splash gaurd 2002 Toyota Google Search