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The system EVAP
Check purge solenoid valve Disconnect the vacuum hose (black with a red stripe) from the solenoid valve. Disconnect the solenoid valve connector.
NOTE Canister purge solenoid valve is controlled by an electronic engine control unit; a low coolant temperature and when the engine is idling, the valve is closed, and evaporating the fuel is not fed into the receiver inlet manifold. However, the engine is warm and in the normal driving mode, the valve opens and fuel vapor received into the receiver inlet manifold. |
NOTE When disconnecting the vacuum hose is always pre-coated with the timing marks to when connecting hoses were installed in its original position. |
Connect a hand vacuum pump to solenoid valve nipple from which the vacuum hose was disconnected with a red stripe (Fig. 2.356).
Create a vacuum with a vacuum pump and check valve operation when connecting / disconnecting the power from the battery to the conclusions of the valve (Fig. 2.357).
| Fig. 2.358. Current measurement on the findings of the valve
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Measure the current at the terminals of the solenoid valve (Fig. 2.358).
Test Data Winding (at 20 ?� C): 0.45 A or less (at 12). Winding resistance: 26 ohm (at 20 ?� C).
Check the vacuum hose
The engine coolant temperature: 80-95 ?� C. Disconnect the vacuum hose from the nozzle of the fuel vapor recovery system on the intake manifold and connect a hand vacuum pump fitting. Start the engine and check that with the increase in speed of the crankshaft of the engine, the vacuum remains fairly constant.
NOTE If a vacuum is created, it is likely that there are deposits in the channel nozzle of a vacuum hose (throttle body) and must be cleaned. |
Check adsorber Check the condition of the safety valve of an adsorber (CCV) and the filter as shown in the figure. Visually check for loose connections, damaged or kinking the hose system EVAP. Visually check for deformations, cracks or leaks of fuel in the joints.
Check two-way valve
Make sure that the air flows through the valve in the direction shown in Figure 2.361. When installing the valve, make sure it is correctly oriented according to the arrow marked on the valve body.
Check the filler cap of the fuel tank
Check the condition of the O-ring cover and the fuel filler cap for damage or deformation. If necessary, replace the filler cap (Fig. 2.362).
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