Canister Purge Control Valve: Testing and Inspection

Inspection Using An Oscilloscope (Reference)

Purge control signal




- PCM terminal: 3C(+) <=> 4A(-)
- Oscilloscope setting: 2.0 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition:
- ECT: above 80 °C {176 °F}
- D range and 7.5 km/h {5 mph} or below.