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Make sure have fuel. Spray some starting fluid or brake cleaner into the intake (while holding throttle plate open). If engine starts for a few seconds, you don't have any fuel. Check fuel pump fuse, relay and fule pump itself. You can also check compression to make sure that timing belt did not go off.
The relay box and fuse box is the same. If engine fires with the starting fluid, you have no fuel in the ingine. Try replacing fuel pump relay with an identical from the same box (don't pull PCM or engine controll relay). If relay replacement does not work, you most likely will need the new pump.