DTC P0446: Evaporative Emission Control System Vent Control Circuit: Operation

The evaporative emission ventilation solenoid power is supplied from the MFI relay (terminal No. 4). The ECM (M/T) or PCM (A/T) controls the evaporative emission ventilation solenoid ground by turning the power transistor in the ECM or PCM ON and OFF.

See Figure , Figure , Figure and Figure .