In this video I will show you how to troubleshoot a no start condition on a Honda. The problem with this car was a shorted ignition coil.

Engine Performance Diagnostics chapter 22

symptoms 50

  • no start (cranks normally)
  • no spark
  • good injector pulse and fuel pressure

fix 50

  • replace shorted ignition coil

test shown enh 50

  • how to use the key on engine off check engine light as a guide
  • how to test for spark
  • how to check for injector pulse with a basic test light
  • how to verify cam and crank sensor signals to the ECU

Tools used

  • lab scope
  • inductive low amp probe
  • incandescent test light
  • backprobing tools

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(Chapter 22) No Spark Troubleshooting, Ignition Coil & Module Testing

Related videos:

How to identify a shorted ignition coil (Honda C.O.P.):


How to test an ignition coil/module with a test light (distributor ignition) - GM:


Ford 5.4 shorted coil primary winding and bad computer driver:


How to find a shorted coil on a Ford 5.4 engine (misfire diagnosis):


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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.

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