Cam and crank signal in techstream.

What are you trying to accomplish?

The only crank position "data" on (any) scantool is RPM.

Some cars have data showing whether or not the camshaft position is where the ECM expects it to be.

Toyota doesn't have that in normal engine data. It sort of has that in the bidirectional VVT tests.

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Someone (@mr_guy_mann maybe?) has posted a thread here some time ago that showed use of a two-channel oscilloscope to observe the crank/cam correlation, if that's of interest.

 

in some cases it's a stretched chain (I have that issue in mine) and I bought a cloyes kit. What brand did you use? I think it matters because a slight difference in the chain triggers p0016.

p0011 and p0012 are cause by VCT solenoids (dirty or bad) usually gets fixed by cleaning or replacing.

 

never heard of that aftermarket brand, when it comes to timing components and critical sensors stick with a known brand

 

The engineers who write the service manual make assumptions. Sometimes those assumptions are wrong. Sometimes failures occur in ways that were not anticipated, that don't account for real-world wear & tear.

Short form is P0016 means that the cam position signal doesn't occur when the ECM expects it (with relation to the crankshaft signal). In theory having a correlation fault with different conditions (VVT commands?) should instead set P0011 or P0012, but that doesn't always happen.

Due to the lack of VVT data in the scantool, the only way I know to "see what the ECM sees" is to use a 2 channel oscilloscope on the cam and crank sensors.

Then I compare to my known-good reference patterns. Is the camshaft advanced (early) or retarded (late). By how much. Does the relation change at all without VVT. What happens with VVT.

Not many DIYers have access to or experience with any scope, let alone a 2 channel.

"Lining up the dots" during chain installation attempts to insure that there are no gross assembly errors. There could be a problem with the VVT actuator - sprocket assembly (the cam to sprocket relation could be incorrect). Or a twisted camshaft. Or "damaged" sensor trigger. Or the chain jumped before the tensioner was released. Or the "wrong" alignment marks were used. Or some other weird fault.

A few scantools such as Techstream or ThinkDiag have bidirectional tests. I do not know what the VVT test data would show (or if it would run) on a car with a correlation fault. Might give more info, or not.

It could be that the chainset is the problem. Without data from testing, it's all guess-work.

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if you have the original chain it will provide insight on how much is the stretch (if there is) Normally a stretched chain will always have the timing marks in-line (not even a tooth off) When I compared mine the difference between old and new is very small and I can't believe that will cause p0016. I only replaced the tensioner and chain, the gears weren't even touched.