Purge control signal

Fig 1: Purge Control Signal - Oscilloscope Graph

Courtesy of MAZDA MOTORS CORP.

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