Oscilloscope Patterns and Waveforms

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Reference

J20 (2.0L) engine
Oscilloscope waveforms of CMP sensor and No.1 ignition trigger signal are as shown in figure when connecting oscilloscope between terminals C51-2-26 and C51-3-26 of ECM (PCM) connectors connected to ECM (PCM), and between terminal C51-2-24 and ground

H25 (2.5L) engine
Oscilloscope waveforms of CMP sensor REF signal and No.1 ignition trigger signal are as shown in figure when connecting oscilloscope between terminal C51-3-10 of ECM (PCM) connector connected to ECM (PCM) and ground, and between terminal C51-2-13 and ground.

Oscilloscope waveforms at specified idle speed