Component Inspection

P0442 Evaporative Emission System-Leak detected (small leak)

Inspection/Repair - Component Inspection

Component Inspection

PCSV to Intake manifold Line Inspection
1. Ignition "OFF"
2. Disconnect the hose leading from the PCSV to the intake manifold at PCSV
3. Using a vacuum pump, apply specified vacuum [Approx. 25 cmHg (10 inHg)] to the manifold side of the valve and verify PCSV holds vacuum.
4. Ignition "ON" & Engine "OFF"
5. Install GDS and select "EVAP PURGE VALVE" on the Actuation Test mode
6. Activates "EVAP PURGE VALVE" by pressing "STRT (F1)" key
7. Verify PCSV release vacuum while valve is activating (should hear a faint click from PCSV)
8. Repeat this procedure 4 or 5 times to ensure PCSV reliability.
Specification:





9. Is PCSV working properly?





Canister Closing Valve (CCV) Line Inspection
1. Reconnect all EVAP hardware that was previously disconnected
2. Disconnect hose connecting Canister Closing Valve (CCV) to canister
3. Ignition "ON" & Engine "OFF"
4. Blow air to the canister side of the valve and verify air escapes to the air filter side.
5. Install GDS and select "CANISTER CLOSE VALVE" on the Actuation Test mode
6. Activates "CANISTER CLOSE VALVE" by pressing "STRT (F1)" key
7. Blow air into hose and verify air does not escape.
8. Repeat this procedure 4 or 5 times to ensure CCV reliability.
9. Is CCV working properly?





Fuel Tank Pressure Sensor Inspection
1. Ignition "ON" & Engine "OFF".
2. Measure FTPS output voltage between Signal terminal (back probe) of the FTPS harness connector and chassis ground

Specification : Voltage increases proportionally with decreasing pressure (Approx. 0.5 V to 4.5 V)









3. Is voltage within the specification?





PCSV to Canister Line Inspection
1. Check for leakage in hose
(1) Reconnect all EVAP hardware that was previously disconnected
(2) Disconnect the hose leading from the canister to the PCSV at canister
(3) Using a vacuum pump, apply specified vacuum[Approx. 4 inHg (14 kPa)] to the manifold side of the valve for 1 minute and verify PCSV holds vacuum.
(4) Is pressure within specification?





2. Check for leakage in canister
(1) Disconnect hose clamps and remove canister assembly
(2) Block the hose of between:
XCanister and fuel filler neck
XCanister and CCV
XCanister and PCSV
(3) Apply maximum of 4 inHg (14 kPa) pressure through fuel tank port from canister
(4) With system sealed and pressurized, check for leaks
(5) Were any leak(s) found?





Fuel Tank Line Inspection
1. Relieve the fuel system pressure and remove the fuel tank (caution)
Before removing the fuel tank, make sure the fuel hoses are not leaking.
2. Block all of the following outlets:
(1) Fuel lines
(2) Fuel filler neck
3. Apply maximum of 10 cmHg (4 inHg) pressure to the EVAP. hose at the fuel tank. Then, pinch the EVAP. hose to retain the pressure
4. Check the suspect area for leaks with a soap solution.
5. Were any leak(s) found?