Throttle Valve Opening Signal Circuit Check

Throttle Valve Opening Signal Circuit Check

Step 1 - 2:

Step 3:

Reference:
Throttle valve opening signal is pulse.
Oscilloscope waveform of throttle valve operating signal as shown in the figure. Connect oscilloscope between terminals "E61-4" and "C51-3-6" of connected ECM connector (for H27 engine model) or between terminals "E61-6" and "C51-3-26" of connected ECM (PCM) connector (for H25 engine model).