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Section 5 Fuel Emission Control System
1. Check the operation when the fuel is cut off.
(a) Warm up the engine for at least 2500rpm. Using sound grade meter, check injector's noise when running.
See (Figure 105).
(b) The noise from the injector should stop immediately after loosing the throttle. Repeat for several times.
2. Check fuel vapor emission control system. See (Figure 106)
(a) Disconnect vacuum pipe after starting the engine.
(b) Select "ACTIVE TEST" and "PURGE VSV (Vacuum Solenoid Valve)" from the display on the fault
diagnosis tester. Confirm vacuum at VSV port.
(c) Connect the vacuum pipe after completing "ACTIVE TEST".
(d) After conducting "ECM DATA MONITOR"on the fault diagnosis tester, select "PURGE VSV" to
check operation.
(e) Start the vehicle after warming up the engine to confirm the VSV status is changed from disconnected to
connected. See (Figure 107).
3. Check the fill fuel port cap and gasket for distortion or damage. See (Figure 108)
Figure 105 Figure 106
Figure 107 Figure 108
Sound Grade Meter
Gasket
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