P0456

DTC P0456

Circuit Diagram










System / Circuit Description

Refer to Description and Operation EVAP Leak Check System Description.

System Diagram





DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

NOTE:

- Be sure to troubleshoot first unexpected DTCs previously detected in "DTC Confirmation Procedure".
- Confirm that the following conditions are met in this "DTC Confirmation Procedure".

- 11 V < Battery voltage

- 4.4 °C (39.9 °F) < IAT < 35 °C (95 °F)

- 4.4 °C (39.9 °F) < ECT < 35 °C (95 °F)

- BARO > 75 kPa (0.8 kgf/cm2, 10.8 psi, 0.75 bar)

- Fuel level < 85%

- DTC P2228 or P2229 is not detected.

1) Warm up engine to normal operating temperature.
2) Drive vehicle at 40 km/h (25 mile/h) for 15 min.
3) Push engine switch to change ignition mode to "OFF" and leave ignition mode in "OFF" for 5 hours.

DTC Troubleshooting

1.
Was "Engine and Emission Control System Check" performed?
YES -
Go to Step 2.
NO -
Go to Engine and Emission Control System Check Engine and Emission Control System Check.

2. Fuel filler cap check

Check fuel filler cap is SUZUKI genuine parts and tightness.
Check fuel filler cap gasket for uneven filler neck imprint, foreign material pinched and damage.
Check fuel filler neck and fuel tank for installation, deformation and looseness.

Is result satisfactory?
YES -
Go to Step 3.
NO -
Repair or replace defective part.

3. Pressurization test

Perform pressurization test. Evaporative Emission System Leak Inspection

Is any leak detected?
YES -
Go to Step 4.
NO -
Go to Step 7.

4. Smoke test

Perform smoke test. Evaporative Emission System Smoke Test

Is there any leak part?
YES -
Repair leaking and then go to Step 3 again.
NO -
Go to Step 5.

5. EVAP canister purge valve check

Check EVAP canister purge valve. Testing and Inspection

Is check result satisfactory?
YES -
Go to Step 6.
NO -
Replace EVAP canister purge valve. Throttle Body and Intake Manifold Components

6. EVAP vent valve circuit and EVAP leak check pressure sensor circuit check

Check EVAP vent valve circuit and EVAP leak check pressure sensor circuit in EVAP leak check module. EVAP Leak Check Module Inspection

Is check result satisfactory?
YES -
Go to Step 7.
NO -
Replace EVAP leak check module. Service and Repair

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. Testing and Inspection

Is check result satisfactory?
YES -
Go to Step 8.
NO -
Replace EVAP leak check module. Service and Repair

8. Fuel level sensor and Its circuit check

Check fuel level sensor and its circuit. P0461

Are they in good condition?
YES -
Go to Step 9.
NO -
Repair or replace defective parts or wire harness.

9. DTC recheck

Replace EVAP leak check module. Service and Repair
Perform DTC confirmation procedure and check DTC.

Is DTC P0456 detected?
YES -
Replace ECM and recheck DTC. Service and Repair
NO -
End.