Flow of Diagnosis

Steps 1 - 5:

Steps 6 - 8:

DIAGNOSIS




Reference

J20 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 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.