Canister Purge Control Valve: Testing and Inspection

Inspection Using An Oscilloscope (Reference)




Purge control signal PCM terminals
- 4U (+) - 1C (-)

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

Vehicle condition
- Idle after warm up (engine speed approx 700 rpm, no load, P/S off, A/C off)