The purpose of this test is to investigate the operation of the primary and secondary ignition circuits within an externally grounded Coil-On-Plug (COP) style ignition system.
Connection for diagnostic work will vary dependent on application.
Technicians should wherever possible gain access to the test circuit without damage to seals and insulation. If this is not possible then make sure appropriate repairs are completed.
General connection advice
PicoScope offers a range of options within the test kits.
Dependent on difficulty of access, choose from:
Testing sensors and actuators (to include relevant circuit/connectors):
To avoid damage to your scope, you may need to use an attenuator for this test.
These instructions do not refer to an attenuator as it is based on our PicoScope 4425 automotive scope.
If you are using a previous PicoScope Automotive model, you will need either a 10:1 or 20:1 attenuator and will need to adjust the Probe settings for the relevant channel.
These settings can be found under Channel Options, then:
This test involves measuring a potentially hazardous voltage.
Please ensure you follow manufacturers safety instructions and working practices and ensure the rated voltage for all accessories you are using meets or exceeds the expected voltage.
Use the Waveform Buffer, Zoom and Measuring tools to examine your waveforms.
The waveforms that you will see during this test are discussed in these topics:
This help topic is subject to changes without notification. The information within is carefully checked and considered to be correct. This information is an example of our investigations and findings and is not a definitive procedure. Pico Technology accepts no responsibility for inaccuracies. Each vehicle may be different and require unique test settings.
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