Ignition System Symptom Diagnosis: Reference

Oscilloscope waveforms of CMP sensor (1) and No.1 ignition trigger signal (2) are as shown in figure when connecting oscilloscope between terminals "C46-14" of ECM connectors connected to ECM and ground, and between terminal "C45-4" and ground.

Fig 1: Measurement Condition For Waveform A

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Fig 2: Measurement Condition For Waveform B

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Fig 3: Examples Of Waveforms A & B

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