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COP ignition
With a lab scope a COP ignition is measured with a Coil-on-Plug probe TP-COP750. The signal from the COP ignition is shown and can be downloaded. To help determining whether the COP ignition is functioning correctly, different deviations from the example signal are mentioned along with possible causes.
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Honda Jazz holds back and stalls
A 2006 Honda Jazz with L13A i-DSI engine occasionally holds back and sometimes even stops. No error codes were stored in the car. Several components have been replaced or swapped with an other car. A lot was driven in the car with a scanner hooked up to monitor the "live data" to find an anomaly in sensor or actuator data. Nothing showed up. Only after diagnosing with a good automotive diagnostic oscilloscope, the cause of the problems was revealed.
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Ford F150 with defective ignition coil
A Ford F150 has an ignition coil for each cylinder and one of them is defective. It is replaced by a new one, but that one breaks down within half an hour. It is replaced again, with the same result. Measuring with an automotive oscilloscope and a current clamp reveal that the ignition control module is defective.
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