Camshaft and crankshaft correlation on oscilloscope.

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February 21, 2025 at 9:45 pm #309211
Titan
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Hi all I’m new to using an oscilloscope in automotive setting.
I’m working on a Holden Cruze which is similar to the Chevy. It has a 1.8 luw petrol engine.the car has a timing belt and is giving me a p0016-00 (intake camshaft position not plausible). Other codes present are oxygen sensor 2 heater circuit related like p0036-00. The car lacks power upon acceleration and struggles to get to speed.
I managed to get the ckp and CMP signals on the scope and the signals lign up but the cam signal is slightly behind the crank signal. My question is do these signals crank and cam need to align perfectly vertically to disregard a timing issue?
Any help appreciated
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