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Cam Crank Re-learn?

Erik Diagnostician Florida Posted Latest Edited

Question

Resolved

Driveability

2014 Fiat 500 Abarth Cabrio 1.4L (H EAF) 5-spd (C510) — 3C3CFFJH2ET190143

P0315 — Crankshaft Position System Variation Not Learned

Just The Dtc

Greetings everyone. Just replaced engine (Cyl #4 burnt exhaust valve) and after that I obviously get a P0315 as well as service info specifically states to perform the Cam Crank Re-learn. Easy I thought with a Bosch, Autel, and Topdon scantool. No obvious Cam Crank relearn in the menu of Hot Functions or Special Functions. The shop scrambles to get a 3 day sub to WiTech as well as use our FORD VCM II J2534 ( we do mostly Ford programming). We get in to WiTech2.0 and we have the same menu of non Cam Crank Re-Learn or just no Cam Crank re-learn at all.

I am clearly missing somehing. The QUESTION do I just drive this toy car for a few trips until it re-learns on its own? Is there a re-name of what the Cam Crank Re-Learn is under? (I have clutch pedal re-learn, brake pedal relearn and A/C relearn surprisingly enough) If all else fails there is an update to the PCM that it needs for the vehicle. Since it does not clearly state it will do it right after, if I update will that cover the Cam Crank Re-learn? Normally I would say no being a past dealer tech for Toyota and VW but FCA products are themselves a different beast so no assumptions to be made on this one.

Of course any help is appreciated but black and white clear procedures would be the best. This vehicle is starting to be a pain. Thanks to all.

I have added the pics to clear up any confusion. Pic of Misc Tests where most the special functions are, System Tests whch have none of the PCM tests at all and the Re-flash the vehicle may need.

*UPDATE*: I did see this in the P0315 about a TLC MIsfire and performed it before starting the vehicle which was the incorrect way. Decided to do the reflash and it led me through some steps as well as a TLC Misfire Reset which is more than likely the Cam Crank Re-learn. Ill update and resolve when I get this up to temp and test drive.

Charles Technician

California

Charles

Can't remember if it was the 500L or not. But it should just be WOT sitting in the bay to almost red line and then let it return to idle. Fault should then go stored and you clear it.

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Erik Diagnostician

Florida

Erik

That’s what I am getting from the message is gave me. Even doing the TLC Misfire read you may have to do it multiple times until the code clears. Thank you though

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Charles Technician

California

Charles

Yes sometimes it took 3 or 4 tries.

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Charles Technician

California

Charles

Is this a used engine you installed? If so did it come out of another 14 500? They change cam/crank patterns between models and years, so they are not compatible. That's an old Chrysler trick fiat learned.

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Erik Diagnostician

Florida

Erik Resolution

Well that’s the ticket. Once you perform the TLC Misfire reset a couple times and throttle past 6000 which you may need to clear the codes again and it stays cleared. Poor clarification in service info coupled with little experience with Fiats and Chryslers didn’t help. Thanks to you folks who responded. The engine was used but was from an Automatic versus Manual which the harness needed to be…

Resolution Ð Awarded

Helpful

Interesting

Thanks

Robert Mobile Technician

Michigan

Robert

Erik! Curious as to what service information you were using to find this procedure? This is a copy and paste from the OE and is self explanatory. Wonder is the after market regurgitated the SI wrong?? PERFORM THE CLEAR MISFIRE TLC RELEARN PROCEDURE NOTE: The “Clear Misfire TLC” Procedure must be performed every time the Powertrain Control Module (PCM) has been a replaced. 1. Turn the…

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Erik Diagnostician

Florida

Erik

I found that an hour after running around and being dumb doing other things. I had performed that TLC Misfire Clear but I had thought it was an ECU memory clear of misfires so the vehicle was stone cold. Clearly on down in Mitchell it explains to do this and get it to temp, above 6000 rpms, and clear the code. I had to do a couple times but it just an engineering language of fancy ‘Cam Crank…

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Agree

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