Diagnostic procedure

DTC P0455 - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED Have FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (Evaporative related) been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on repair, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Service Bulletins and/or on- line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE OR STORED DTCs Turn key to OFF then ON (Engine off). Verify related pending code or stored DTCs. Is DTC P0443 or P0446 or both present?	Yes	Go to appropriate DTC troubleshooting procedure. (See DTC TABLE .)
3		No	Go to the next step.
4	CLASSIFY INTERMITTENT CONCERN OR CONTINUOUS CONCERN Perform Evaporative System Leak Inspection. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK INSPECTION ) Does it fail test?	Yes	Intermittent concern exists. Inspect purge solenoid valve and EVAP system leak detection pump circuit for intermittent concern. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4		No	Go to the next step.
5	INSPECT FUEL FILLER CAP NOTE: When fuel-filler caps other than OEM caps are attached, it is considered a malfunction. Verify that fuel-filler cap is neither disconnected nor loose or damaged. It is okay?	Yes	Go to the next step.
5		No	Retighten fuel-filler cap or replace it, if it is damaged. Go to Step 18.
6	INSPECT PURGE SOLENOID VALVE Inspect purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION .) Is there any malfunction?	Yes	Go to the next step.
6		No	Replace purge solenoid valve, then go to Step 18.
7	INSPECT CHANGE OVER VALVE (IN EVAP SYSTEM LEAK DETECTION PUMP) Perform EVAP system leak detection pump inspection. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK DETECTION PUMP INSPECTION ) Is there any malfunction?	Yes	Replace EVAP system leak detection pump, then go to Step 18. (See EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM COMPONENT REMOVAL/INSTALLATION .)
7		No	Go to the next step.
8	INSPECT IF EVAP CONTROL SYSTEM FOR LEAKAGE OR BLOCKAGE NOTE: If EVAP System Tester is not available, then go to the next step. Perform Evaporative System Leak Inspection. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK INSPECTION ) Is system test okay?	Yes	Go to the next step.
8		No	Repair or replace faulty area, then go to Step 18.
9	INSPECT CHARCOAL CANISTER TO FUEL PUMP FOR LEAKAGE Disconnect fuel tank side vacuum hose at charcoal canister. Apply vacuum 1.7 kPa {13 mmHg, 0.5 inHg} to disconnected vacuum hose using vacuum hose. Does vacuum hold for minimum of 2 min?	Yes	Go to Step 13.
9		No	Go to the next step.
10	VERIFY VACUUM HOSE FOR POOR CONNECTION Verify vacuum hose installation condition between fuel tank and charcoal canister. Is there poor connection detected?	Yes	Connect vacuum hose correctly, then go to Step 18.
10		No	Go to the next step
11	INSPECT FUEL PUMP UNIT INSTALLATION Remove fuel tank. (See FUEL TANK REMOVAL/INSTALLATION .) Visually inspect for damage, insufficient sealing or poorly installed pump unit. Is it normal?	Yes	Go to the next step.
11		No	Repair or replace fuel tank or sealing, then go to the next step.
12	INSPECT FUEL TANK Inspect fuel tank. Is it normal?	Yes	Replace vacuum hose from charcoal canister to fuel tank, then go to the next step.
12	INSPECT FUEL TANK Inspect fuel tank. Is it normal?	No	Replace fuel tank, then go to the next step. (See FUEL TANK REMOVAL/INSTALLATION .)
13	INSPECT LEAKAGE FROM CHARCOAL CANISTER TO PURGE SOLENOID VALVE Disconnect purge solenoid valve side vacuum hose to at charcoal canister. Apply vacuum 3.3 kPa {25 mmHg, 1.0 inHg} to disconnected vacuum hose using vacuum hose. Does vacuum hold for minimum of 2 min?	Yes	Go to Step 18.
13		No	Go to the next step.
14	VERIFY VACUUM HOSE FOR POOR CONNECTION Verify vacuum hose installation condition between purge solenoid valve and charcoal canister. Is there poor connection detected?	Yes	Connect vacuum hose correctly, then go to Step 18.
14		No	Go to the next step.
15	INSPECT PURGE SOLENOID VALVE FOR DAMAGE OR AIR LEAK Remove purge solenoid valve and inspect for damage and air leak. Is it normal?	Yes	Go to the next step.
15		No	Replace purge solenoid valve, then go to Step 18.
16	INSPECT CATCH TANK Remove catch tank and inspect for plugging, damage or pinhole using vacuum pump. Is it normal?	Yes	Go to the next step.
16		No	Replace catch tank, then go to Step 18.
17	INSPECT CHARCOAL CANISTER Remove charcoal canister and inspect for plugging, damage or pinhole. Is it normal?	Yes	Replace vacuum hose from charcoal canister to purge solenoid valve, then go to the next step.
17		No	Replace charcoal canister, then go to the next step.
18	PERFORM LEAK INSPECTION Connect all disconnected connectors. Perform Evaporative System Leak Inspection. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK INSPECTION ) Does it fail test?	Yes	Leakage still exists. Locate leak point and repair. Then go to the next step.
18		No	Go to the next step.
19	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
19		No	Troubleshooting completed.