Instead of looking for a specific resistance value, focus on testing the CKP sensor for proper function, not just resistance. The resistance measurement is only one, limited aspect of diagnosing the sensor. A multimeter can be used to check the sensor's resistance, but it's far more useful to:
* Check for continuity: Make sure there's a continuous electrical path between the sensor's terminals. An open circuit indicates a broken wire or faulty sensor.
* Check for shorts: Make sure there are no short circuits between the sensor's terminals.
* Use a scan tool: This is by far the best way to diagnose CKP sensor issues. A scan tool can read the sensor's signal and detect intermittent problems or incorrect signal patterns that resistance checks wouldn't catch. A misfiring engine or crankshaft position sensor code (likely a P0335 or a related code) would point to the sensor as the likely culprit.
* Compare sensor readings to specifications: If you have access to a factory service manual for your 1996 Grand Cherokee, it might give you acceptable signal voltage or frequency ranges at idle and other engine speeds rather than a simple resistance reading.
In short, while you *could* try to find a resistance range online (and you may find conflicting information), relying on that alone is unreliable. Testing the sensor's functionality using the methods above will give you a much more accurate diagnosis. If the sensor fails any of these tests, replacement is usually the best course of action.
