Evaporative Emission (EVAP) Purge Solenoid

The EVAP purge solenoid is located to the back of the engine block, below the intake manifold just above the starter motor. The EVAP purge solenoid controls the flow of fuel vapors from the EVAP canister to the intake manifold. The EVAP purge solenoid is commanded On (PWM) when the EVAP system is in purge mode. Fuel vapors can be purged anytime the PCM is in closed loop and the vehicle is not decelerating. The PCM controls the EVAP purge solenoid by grounding the solenoid circuit.