Harness (From Fuel Section)

EXHAUST GAS RECIRCULATION (EGR) SOLENOID VALVE




The EGR solenoid valve is a duty control type solenoid valve. which controls EGR valve operation with negative pressure from the throttle body A port.

Circuit Diagram:

EGR Value Checking:

HARNESS INSPECTION PROCEDURES
Refer to "P0489, P0490" DTC inspection procedures.

INSPECTION

CHECKING CONDITION
Engine coolant temperature: 80 - 95 degrees C (176 - 205 degrees F)




1. Disconnect the vacuum hose from the throttle body EGR vacuum fitting and connect a hand vacuum pump to the fitting.




2. Start the engine and check to see that, after increasing the engine speed, vacuum raises proportionately to engine speed.

NOTE: If there is a problem with the change in vacuum, it is possible that the throttle body port may be restricted and require cleaning.