Oscilloscope Patterns and Waveforms

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




APP signal
Accelerator pedal is released




Accelerator pedal is depressed
PCM terminals
- 1AL(+) - 2AA(-)

Oscilloscope setting
- 2.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition
- Ignition switch is turned to the ON position. (engine off)