940s do not have cam sensors. the crank sensor sits in the bellhousing and reads the teeth on the flywheel.

easy crank sensor test-

if the injectors don't pulse and no spark from the coil-crank sensor

if the injectors DON'T pulse and there's spark from the coil-probably fuel pump/system relay-needs further diagnosis.

if the injectors DO pulse and there's no spark from the coil-coil, ignition amp, cap, rotor, etc-needs further diagnosis.