EGR Control Solenoid: Testing and Inspection
VACUUM SIDEFig. 142 Solenoid Test Vac Side:
1. Disconnect vacuum hoses.
2. Blow through either hose and ensure that air does not flow.
3. Unplug electrical connector and connect 12V and a ground to solenoid valve.
4. Blow through either hose and ensure that air now flows.
5. If not as specified, replace solenoid valves.
VENT SIDE
Fig. 143 Solenoid Test Vent Side:
1. Disconnect vacuum hoses.
2. Blow through either hose and ensure that air flows.
3. Unplug electrical connector and connect 12V and a ground to solenoid valve.
4. Blow through either hose and ensure that air does not flow.
5. If not as specified, replace solenoid valves.