Component Tests and General Diagnostics

EVAPORATIVE EMISSION SYSTEM

Component Inspection


EVAP CANISTER






Check EVAP canister as follows:
1.Block port (B).
2.Blow air into port (A) and confirm that it flows freely out of port (C).
3.Release blocked port (B).
4.Apply vacuum pressure to port (B) and confirm that vacuum pressure exists at the ports (A) and (C).
5.Block port (A) and (B).
6.Apply pressure to port (C) and check that there is no leakage.

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)






1.Wipe clean valve housing.





2.Check valve opening pressure and vacuum.
Pressure:15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2, 2.22 - 2.90 psi)
Vacuum:6.0 to 3.4 kPa (-0.061 to 0.035 kg/cm2, 0.87 to 0.48 psi)

3.If out of specification, replace fuel filler cap as an assembly.
Component.

CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

P0443.

FUEL TANK TEMPERATURE SENSOR

P0181.

EVAP CANISTER VENT CONTROL VALVE

P0447.

EVAP CONTROL SYSTEM PRESSURE SENSOR

P0451.

EVAP SERVICE PORT






Positive pressure is delivered to the EVAP system through the EVAP
service port. If fuel vapor leakage in the EVAP system occurs, use a leak detector to locate the leak.