Diagnostic Aids

Inspect all EVAP system components and vacuum hoses. See underhood vehicle emission control information label for component identification and vacuum hose routing.

An intermittent malfunction may be caused by a poor connection, rubbed-through wire insulation, or a wire broken inside insulation. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connections before component replacement.