Component Tests and General Diagnostics

EVAPORATIVE EMISSION SYSTEM LEAK TEST

Phase 1 - Leak Verification

1. Run the Evaporative Emission Test with the scan tool.

2. If the Evaporative Emission Test system failed the Evaporative Emission Test, then proceed to Phase 2.

NOTE:Some small leaks may not be detected using the Evaporative Emission Test. If the system has passed the test but a leak is still suspected, then proceed to Phase 2.

Phase 2 - System Leak Check

1. Disconnect the fuel vapor tube-to-evaporative emission (EVAP) canister purge valve quick connect coupling.

2. Connect the Mazda EVAP Emissions Tester 134-01049A or equivalent, to the evaporative emission (EVAP) test port.

3. Connect the battery ground cable. See - Service and Repair or - Service and Repair.

NOTE:The battery ground cable was previously disconnected in the fuel vapor tube quick connect coupling procedure.
4. Close the canister vent solenoid with the scan tool. See Canister Vent Solenoid Closing Procedure.

5. Install the supplemental refueling adapter into the Easy Fuel™ (capless) fuel tank filler pipe assembly.

NOTE:The supplemental refueling adapter is located behind the RR quarter trim access panel.
6. Introduce smoke from the smoke machine into the EVAP system. For additional information, refer to the manufacturer's instructions.

NOTE:If smoke does not exit the fuel tank filler pipe neck area after the system is pressurized, open the canister vent solenoid with the scan tool to allow the air to purge. Once smoke is seen at the canister vent solenoid, close the canister vent solenoid with the scan tool.
7. Remove the supplemental refueling adapter once smoke is observed exiting the fuel tank filler pipe neck area.

8. Continue to enter smoke into the system for 60 seconds to obtain pressure.

9. Press and release the remote start button in intervals of 15 seconds ON and 15 seconds OFF while checking for exiting smoke.

10. Use the halogen light provided with the smoke machine to look for smoke coming from the EVAP system. This would indicate a leak point.

11. Repair any leaks as necessary.

12. Repeat the leak test until the system passes.