DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Was "Engine and Emission Control System Check" performed?	Go to Step 2.	Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2	Fuel filler cap check Check fuel filler cap is the SUZUKI genuine parts and tightness. Check the fuel filler cap gasket for uneven filler neck imprint, foreign material pinched and damage. Is the result satisfactory?	Go to Step 3.	Replace the fuel filler cap with new genuine one.
3	Pressurization test Perform the pressurization test referring to EVAP LEAK CHECK SYSTEM LEAK INSPECTION . Is any leak detected?	Go to Step 4.	Go to Step 7.
4	Smoke test Perform the smoke test referring to EVAP LEAK CHECK SYSTEM SMOKE TEST . Is there any leak part?	Repair the leak and then go to Step 3 again.	Go to Step 5.
5	EVAP canister purge valve check Check EVAP canister purge valve referring to EVAP CANISTER PURGE VALVE AND ITS CIRCUIT INSPECTION . Is check result satisfactory?	Go to Step 6.	Replace EVAP canister purge valve.
6	EVAP vent valve and EVAP leak check pressure sensor check Check EVAP vent valve and EVAP leak check pressure sensor in EVAP leak check module referring to EVAP LEAK CHECK MODULE INSPECTION . Is check result satisfactory?	Return to Step 3.	Replace EVAP leak check module.
7	EVAP vent valve and EVAP leak check pressure sensor check Check EVAP vent valve and EVAP leak check pressure sensor in EVAP leak check module referring to EVAP LEAK CHECK MODULE INSPECTION . Is check result satisfactory?	Go to Step 8.	Replace EVAP leak check module.
8	EVAP leak check Replace EVAP leak check module. Connect scan tool to DLC and clear DTC. Run engine at idle for 10 minutes. Confirm that DTC is no detected. Turn ignition switch to OFF position and leave for 6 hours. Recheck DTC. Is DTC P0456 detected?	Substitute a known-good ECM and recheck.	End.