I'm helping a friend clear a check engine light code for the camshaft position sensor in a 1997 E320. I need to check the sensor and wiring and reset the CEL.

Can somebody please post a wiring diagram to tell me where the wire going to the camshaft position sensor ends up. I'd like to check continuity to be sure the wire is well insulated and not broken in the harness.

Also, is there a way to check the functioning of the position sensor without having an oscilloscope. I assume it works by sensing a magnet on the camshaft gear passing by. Not sure how to easily measure that event.

I'll also check that it has the 0.4 - 0.6 mm gap between the end and the camshaft (gear?).

Thanks,

Paul

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1983 500 SL (Gone )
1972 350 SL 4.5