This video covers no start, no spark diagnostics and wiring repair of a crank sensor connector.

Engine Performance Diagnostics chapter 21

symptoms 50

  • no start
  • no spark or fuel injector pulse
  • check engine light (P0320 trouble code)

fix 50

  • repair broken wires to crankshaft position sensor

test shown enh 50

  • how to test for spark using an incandescent test light
  • how to use scan data RPM for direction for no spark problems
  • how to use scan tool cam and crank data
  • how a bad crank sensor can set a cam sensor code
  • how a bad cam sensor can set a crank sensor code
  • how to fire an ignition coil with a scan tool
  • how to test cam and crank sensor waveforms on a scope
  • how to repair a sensor connector when the wire breaks right at the sensor

Tools used

  • incandescent test light
  • bidirectional scan tool
  • lab scope (Picoscope)
  • butane soldering gun
  • backprobing pins

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(Chapter 21) Ignition inputs, cam and crank

Related videos:

How to test a crank sensor (Chrysler Dodge Jeep):


Jeep 4.7 no start from faulty cam sensor (ScannerDanner Premium lecture) :


2003 Chrysler-Dodge 3.8L No Start (faulty crank sensor):


2004 Chrysler 3.3L Cam/Crank Sensor test - wrong cam gear installed!!:


Misfire caused by a misadjusted crank sensor (rubbing on flywheel) :


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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available 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. 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!