General Information

Component Location





General Description

The purpose of the Evaporative Emission Control System is to capture the fuel vapors (HC) that would escape from the fuel system. Gasoline vapors from the fuel tank and throttle body are collected in a charcoal canister. When the engine is running, the ECM can command the Purge Valve (PCSV) open which allows the fuel vapors to be pulled into the intake manifold from the canister. While purging, fresh air is pulled in through the Canister Close Valve (CCV). The CCV is normally open (NO) and is closed by the ECM. The CCV received B+ to one terminal and the ECM will apply ground to the other terminal to close the valve. The CCV is closed when the ECM is performing a leak test on the Evap system.

DTC Description

If there is Short to power in CCV circuit, ECM sets DTC P0448.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram