Oscilloscope Patterns and Waveforms

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




CKP sensor signal

(+)

PCM terminals
- 2Y(+) - 2AA(-)

Oscilloscope setting
- 2 V/DIV (Y), 10 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)

(-)




PCM terminals
- 2Z(+) - 2AA(-)

Oscilloscope setting
- 2 V/DIV (Y), 10 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)