Diagnostic Aids
Check following items:
- For missing or damaged "O" rings at EVAP canister fuel vapor and purge line fittings.
- For cracks or punctures in EVAP canister.
- For damaged or disconnected source vacuum line, EVAP purge line, vent hose or fuel tank vapor line.
- For faulty connections at PCM. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal-to -wire connection.
- For damaged harness. Inspect wiring harness to EVAP vent solenoid, EVAP purge solenoid, and fuel tank pressure sensor for intermittent open or short.