Ignition System Check: Reference
Oscilloscope waveforms of CMP sensor (1) and No. 1 ignition trigger signal (3) 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. For ECM (PCM) terminal assignment, refer to TEST PROCEDURES , Pin Voltage Chart.