I need a toyota camry 2003 owner manual.Where do I find it

look in owners manual

Check the owners' manual. it lists the fuses and what each controls.

What specific problem are you having with you vehicle?

While many owners manuals are available online, it appears yours is not. Toyota.com says to call their Material Distribution Center at 1-800-622-2033 to order owners manuals, repair manuals, wiring diagrams, and other technical reference documents. It doesn't say if there is a fee, or how much.
Another site: Helm, Inc.has owners manuals for a fee. Might be cheaper than Toyota.
If you are just looking for maintenance schedules, Edmunds.com has a Maintenance page with manufacturer's recommended maintenance schedule, recalls, and technical service bulletins for your car. Good luck.

there should be a code on the owners manual or call dealer for an 800 number as long as the car is register to you they will give you the code

You can do that at the toyota.com website. You'll need to register as an owner and then you will have access to the down-loadable owners manual.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Remove the petrol tank (turn off the fuel!) and check that the wiring looms are not warn through and you are experiencing an electrical short or that one of the wiring plugs has not come loose. Check the wiring loom thoroughly!

Check at http://www.toyotanation.com

These can be purchased (special order) from the parts department of your local Toyota dealer. You can also buy them on EBay. I just did a search there and found several for sale. See

http://cgi.ebay.com/ebaymotors/Camry-08-2008-Toyota-Owners-Owners-Manual-100s-more_W0QQitemZ400027675735QQcmdZViewItemQQptZMotors_Manuals_Literature?hash=item5d2381ec57&_trksid=p4506.c0.m245&_trkparms=65%3A12|39%3A1|72%3A1205|240%3A1318

http://cgi.ebay.com/ebaymotors/2008-Toyota-Camry-Solara-Owners-Manual-Complete_W0QQitemZ200351865038QQcmdZViewItemQQptZMotors_Manuals_Literature?hash=item2ea5e6d8ce&_trksid=p4506.c0.m245&_trkparms=65%3A12|39%3A1|72%3A1205|240%3A1318

Charlie

U don't have to remove anything, just get a laser lens cleaning disk from any store that carries music CD's Walmart has them for about $6

Their should be a diagram in the front of the engine compartment. Their will definitely be a diagram in the owners manual.