How-to: diagnose a P0320 (crankshaft position sensor circuit failure)

This si a how-to video on the correct diagnois of a P0320 as applied to jeep/dodge/Chrysler cars and trucks. this was done on a 1997 jeep wrangler 2.5l 4 cylinder engine. you car or truck may not be exactly the same but the theories and principles are the same for the overall diagnosis. if you have any questions please feel free to email me itsthejeepdoctor@gmail.com, tweet at me @thejeepdoctor, find me on facebood facebook.com/itsthejeepdoctors and please check out my other videos. thanks!

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Intermittent stall, no start - P0320, P1391 cam, crank sensor testing (Jeep)
Join me and one of my students at RTC as we troubleshoot an intermittent no start problem on a Jeep Grand Cherokee. The procedures shown in this video apply to all Chrysler, Dodge and Jeep electrical systems. In particular, the cam and crank sensor tests that we show. Symptoms - intermittent no start, no spark or injector pulse - check engine light on P0320, P1391 trouble codes - hesitation and surging Fix - replace faulty crank sensor Tests shown - how to test for cam and crank signals on scan data - what scan data Ignition Cycles can be used for - how to test the cam and crank sensors with a scope - how sample rate of a scope affects the signal - why a sensor ground is better to use than battery ground in some circumstances - how to recreate an intermittent problem - sensor power and ground tests Engine Performance Diagnostics chapter 21 Playlist - (Chapter 21) Ignition inputs, cam and crank sensors https://www.youtube.com/playlist?list=PLAFYVCyenqcqEN41aYznWn9Nfhy1PiMjo Related videos - Picoscope Basics Part 1 https://youtu.be/81AGbZcgCZs - Picoscope Basics Part 2 https://youtu.be/ntJJYhkmR4I - How to test a crank sensor (Chrysler Dodge Jeep) https://youtu.be/YtpDi2vnGog - Jeep 4.7 no start from faulty cam sensor (an SD Premium video) https://youtu.be/kRnq8uuUGOg - Faulty cam sensor setting a crank sensor code - P1389, P0320, P0622 https://youtu.be/VrsI1xCoZ8M 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. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. 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!





How to test a crank sensor with a voltmeter (All Chrysler models)
The tests shown in this video apply to camshaft, crankshaft and vehicle speed sensors on ALL Chrysler models, in all production years. The vehicle being tested is a 1997 Jeep with a 4.0L engine. Chrysler has changed very little in regards to their hall effect sensors throughout the years. Older systems used an 8-9v reference circuit (power supply), where the newer systems use 5v. And with all of them, the signal circuit is a 5v pull-down design. Engine Performance Diagnostics chapter 21 pages 20-29 Tests shown - how to check a crank sensor with a voltmeter -what does an on/off digital signal look like on a voltmeter - how to check the 5v reference and ground to the sensor - how to perform a bypass test - how to verify signal circuit integrity Tools used - digital multimeter - jumper wire - backprobing pins - incandescent test light - scan tool Related videos - 1997 Dodge Neon no start, crank sensor problems https://youtu.be/xwh3XM1Nl4k - How to test a crank sensor (Chrysler Dodge Jeep) https://youtu.be/YtpDi2vnGog - How to test a cam sensor with a voltmeter (All Chrysler models) https://youtu.be/irHVjFTq4LE - 2003 Chrysler-Dodge 3 8L No Start (faulty crank sensor) https://youtu.be/VrsI1xCoZ8M 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. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. 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! Playlist (Chapter 21) Ignition inputs, cam and crank https://www.youtube.com/playlist?list=PLAFYVCyenqcqEN41aYznWn9Nfhy1PiMjo





How to test for a bad crank sensor
In this video ill show a trick I have learned on how to test for bad sensors. Hope yall enjoy





How to Test Crankshaft and Camshaft Position Sensors
Here is how you can easily test both your crankshaft position sensor and camshaft position sensor. It's very important to be able to test these sensor since because they control your ignition and fuel injector pulse and if they fail they could cause a Crank No start condition. Multimeter used in this Video: http://amzn.to/2aWpN8E Please consider supporting this channel: https://www.patreon.com/Ratchets Facebook: https://www.facebook.com/Ratchets2015 Twitter: https://twitter.com/Ratchets15 Instagram: https://www.instagram.com/ratchetsandwrenches Here are some other video's you may find interesting: How to diagnose a No Crank No Start Condition: https://youtu.be/2RUhq7sXNBo How to test a Mass Air Flow Sensor: https://youtu.be/a6eaOd3ihiE How to test Fuel Injectors: https://youtu.be/Sfq-fM3-TIk How to test a Throttle Position Sensor: https://youtu.be/9IUtl6J5F5s If this video helped you out please don't forget to subscribe, give it a thumbs up or if you are feeling generous leaving a tip by clicking the " i " button on the top right corner of the screen. Thank you very much for your support! Disclaimer: Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.




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