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You can't check the sensors electrically, though you can check their plugs/harnesses. Maybe you mean the coil packs. Just poke both ends with the probes and select the appropriate setting.
As Harv suggested you can just spark it off. Do that by unplugging one from the spark side, put a plug in it, hold it near something conductive, and crank the key for a second.
If you get a spark, assume your cam and crank sensors are working, I guess. Next check the timing belt. Just pull off the side covers and see if it is loose. I think this is unlikely, but it may have jumped some teeth. It would have to miss more than a couple to render the engine inoperable.
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