This Caravan case study covers scope testing camshaft and crankshaft sensor signals while diagnosing a timing misalignment code, a valuable skill for all makes and models. I also got the chance to introduce you to iATN, and how beneficial it can be as an information resource during diagnostics. The information I found there was a huge part of making a confident call on this vehicle.
Engine Performance Diagnostics chapter 21
Symptoms
check engine light (P0032, P0344, P0016)
cutting out/surging off idle
intermittent long crank time
Fix
replace camshaft sensor reluctor (part of the timing chain sprocket)
Tests shown
using scan data to evaluate a cam/crank timing issue
how to scope the cam and crank sensor signals
how to compare a cam/crank waveform to a known good
understanding changes in Chrysler cam/crank sensor reluctors
using injector and coil firing events on a lab scope
Tools used
scan tool
lab scope (Picoscope Automotive 4 channel kit)
20:1 attenuator
iATN.net
Playlist
(Chapter 21) Ignition inputs, cam and crank sensors
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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
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On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.
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