open the trunk and you'll see the screws when you remove the side covers. also from the outside are screws around the top of the wheel well. you should be able to figure it out from once you start.
It is very possible that when you disconnected the battery the adapted settings by the car computer have been reset to default. You will need to re learn the settings. It is a common problem.
2002 Camry LE Battery change Idle FIX
Do not get fooled into cleaning the air throttle body for built up carbon and dirt. This maintenance on the air input may be needed. but the risk of creating a second problem is a concern, In all cases the electronics will have to relearn the idle and running settings.
In the future to avoid this problem do not depress the gas pedal during battery replacement or during start after battery replacement. Usually the idle air setting is at the right setting after battery change and restart. Depressing the pedal early adds to the relearning requirement. There are solutions that maintain voltage in the car during battery replacement to avoid this inconvenience. The video above shows an 8 mile learning process.
The following link is an excellent explanation of the problem
Battery Disconnect or Replacement Problems
Well, an engine needs 3 things to run....fuel, spark, and compression. But they also have to happen in the right time in the right amounts. If you are sure that you have fuel getting into the engine, and you are sure that you have spark at the plugs. I think I would be checking the timing and the compression. And remember, just because you have fuel pressure at the fuel rail doesn't nesissarily mean that the injectors are opening.
