Operation CHARM: Car repair manuals for everyone.

Canister Purge Control Valve: Testing and Inspection

Inspection Using An Oscilloscope (Reference)




Purge solenoid valve control signal
PCM terminals

- 18 (+) - 25 (-)

Oscilloscope setting
- 5 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, during purge control)