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P0455

Wiring Diagram:









CIRCUIT DESCRIPTION
REfer to Evaporative Emission Control System for System Operation.

Detecting Condition / Possible Cause:






DTC CONFIRMATION PROCEDURE

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1. Turn ignition switch OFF.
2. Clear DTC with ignition switch ON.

3. Check vehicle and environmental condition for:
- Indication of fuel level meter in combination meter: within 1/4 - 3/4
- Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
- Ambient temp.: -10 °C, 14 °F or higher
- Intake air temp.: 70 °C, 158 °F or lower
- Engine coolant temp.: 70 - 110 °C, 158 - 230 °F

4. Drive vehicle under usual driving condition, driving at 30-40 mph (50-60 kph ) including short stop to traffic signal (under driving condition other than high-load, high-engine speed, rapid accelerating and decelerating), for 20 min.
5. Keep vehicle speed at 30 - 40 mph, 50 - 60 kph and hold throttle valve at that opening position for 3 min.

Test Result Confirmation Table (Steps 1 - 2):




6. Stop vehicle (do not turn ignition switch OFF) and confirm test results according to "Test Result Confirmation Flow Table"

Inspection (Steps 1 - 11):




Inspection (Steps 12 - 16):






WARNING: This work must be performed in a well ventilated area and away from any open flames such as gas hot water.

EVAP Canister Purge Valve and its Circuit Inspection

When using SUZUKI scan tool:




1. Connect SUZUKI scan tool to DLC with ignition switch OFF and disconnect vacuum hoses from canister.
2. Turn ignition switch ON, clear DTC and select "MISC TEST" mode on SUZUKI scan tool.

When not using SUZUKI scan tool:




1. Disconnect vacuum hoses from canister.
2. Turn ignition switch ON.
Using service wire, ground C21-7 terminal of ECM connector (valve ON) and unground it (valve OFF).




3. Check purge valve for operation and vacuum passage for clog when valve is switched ON and OFF by using SUZUKI scan tool or service wire.

Valve OFF: When blowing into hose "A", air should not come out of hose"B".
Valve ON: When blowing into hose "A", air should come out of hose"B".

If check result is not described, check vacuum hoses, purge valve, wire harness and connections.

EVAP Canister Purge Valve Inspection




1. With ignition switch OFF, disconnect coupler from canister purge valve.
2. Check resistance of EVAP canister purge valve.
Resistance between two terminals : 30 - 34 Ohms at 20 °C (68 °F)
Resistance between terminal and body : 1 MOhms or higher
If resistance is as specified, proceed to next operation check. If not, replace.




3. Disconnect vacuum hoses.
4. With coupler disconnected, blow into hose "A". Air should not come out of hose "B".
5. Connect 12 V-battery to EVAP canister purge valve terminals. In this state, blow hose "A". Air should come out of hose "B".

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

If check result is not described, replace purge valve.

Tank Pressure Control Solenoid (Vacuum) Valve and Its Circuit Inspection

When using SUZUKI scan tool:




1. Disconnect hose from tank pressure control valve (For 99MY).
2. Connect SUZUKI scan tool to DLC with ignition switch OFF.
3. Turn ignition switch ON, clear DTC and select "MISC TEST" mode on SUZUKI scan tool.

When not using SUZUKI scan tool:




1. Disconnect hose from tank pressure control valve (For 99MY).
2. Turn ignition switch ON.
3. Using service wire, ground C21-16 terminal of ECM connector (valve ON) and unground it (valve OFF).




For 99MY
4. Check solenoid vacuum valve for operation and vacuum passage for clog and leakage when valve is switched ON and OFF by SUZUKI scan tool or service wire.

Valve OFF : When blowing into hose "A", air should come out of filter and not enter into intake manifold.
Valve ON : When blowing into hose "A", air should enter into intake manifold and not out of filter.

If check result is not described, check vacuum hoses, solenoid vacuum valve, wire harness and connections.




For 2OOOMY
4. Check pressure control solenoid valve for operating sound when valve is switched ON and OFF by using SUZUKI scan tool or service wire.

If no sound is heard, check wire harness, connections and tank pressure control solenoid valve.

EVAP Canister Air Valve and Its Circuit Inspection

When using SUZUKI scan tool:




1. Disconnect canister air valve hose from canister.
2. Connect SUZUKI scan tool to DLC with ignition switch OFF
3. Turn ignition switch ON, clear DTC and select "MISC TEST" mode on SUZUKI scan tool.

When not using SUZUKI scan tool:




1. Disconnect canister air valve hose from canister.
2. Turn ignition switch ON.
3. Using service wire, ground C21-3 terminal of ECM connector (valve ON) and unground it (valve OFF).




4. Check canister air valve for operation and hose for clog when valve is switched ON and OFF by SUZUKI scan tool or service wire.

Valve OFF : When blowing into hose "A", air should come out of hoses "B".
Valve ON : When blowing into hose "A", air should not come out of hose "B".

If check result is not described, check hose, canister air valve, wire harness and connections.

EVAP Leakage Inspection




1. Disconnect purge hose from intake manifold and tank pressure control valve hose from solenoid vacuum valve.
2. Plug EVAP canister air valve hose end.
3. Connect SUZUKI scan tool to DLC with ignition switch OFF




4. Open EVAP canister purge valve using "MISC TEST" mode on SUZUKI scan tool or grounding C21 -7 terminal of ECM connector.




5. While observing tank pressure displayed on SUZUKI scan tool, apply 3.5 kPa, 14 in.Aq, 26 mm Hg pressure into purge hose and fuel tank and seal it.
After 15 sec., check to make sure that pressure is higher than 3.3 kPa, 13.6 in.Aq, 24.5 mm Hg.
If check result is not satisfactory, locate pressure leaking point by using soap water or leak detector.




If no pressure leakage exists in vapor purge line, fuel filler cap, tiller neck and etc., remove fuel tank from vehicle and check for leakage from installation face of parts installed on fuel tank, hose joint, tank pressure control valves, tank pressure control solenoid valve and refuel vapor control valve.
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