J20 engine
WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Oscilloscope waveforms of CMP sensor and No.1 ignition trigger signal are as shown in the 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.