EGR Valve: Testing and Inspection

EGR Valve Test:

EXHAUST GAS RECIRCULATION VALVE
Apply vacuum to fitting on valve. Replace valve if the diaphragm does not hold vacuum or valve spring does not lift replace valve.

Fig. 46 Solenoid Test:

EGR SOLENOID FUNCTION TEST
Apply voltage to the solenoid terminals and check air passages for continuity as shown above. If continuity does not exist replace solenoid.

CAUTION: Reversing polarity will damage the solenoid.