DTC P0441: EVAP Emission Control System Incorrect Purge Flow Or DTC P0446: EVAP Emission Control System Vent Control Circuit: Notes

CAUTION: If Engine Control Module (ECM) replacement is instructed in following test, always ensure ECM connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction.

NOTE: If DTCs P0441, P0446, P0450 or P0451 is output with DTCs P0442 or P0456, perform appropriate test for these DTCs first before performing test for DTCs P0442 or P0456.