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As somebody who has just come through the thorough testing of the sensors only to discover that timing belt jumped ~10 teeth I can testify that:
1. The cam and second crank sensors are inductive type (coil),
resistance is 1.5kohm. When you wave a magnet or a significan metal object (heavy duty 3 hole punch will do) in vicinity of a sensor, you should see resistance change. You should also see voltage generated - Subaru spec is 0.1 volts, don't know the speed or the distance required to achieve the spec, but my 3 hole punch could do up to 0.15-0.2 volts if moved quickly enough.
2. I did have a rough starting problem in the morning when the car died, after initial minute or two of bad misfiring it started to run fine and run perfectly well for an hour. Then it would not start at all. I never found the cause of the timing belt jump.
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