Diagnostic Aids
Check for the following:
- Cranked and punctured EVAP canister.
- Damaged or disconnected source vacuum line, EVAP purge line, vent hose, for fuel tank vapor line.
- Poor connection at PCM.
- Inspect harness connectors for backed-out terminals, improper mating, broken lock, damaged terminals, or poor wire connection.
- Check for intermittent in circuit.
- Check for kinked, pinched or plugged vacuum lines to EVAP purge or fuel tank vapor line. Also check for restrictions.
- Faulty or damaged evaporative canister.