EGR1 - Check EGR Control Solenoid

^ Key OFF.

^ Disconnect the Exhaust Gas Recirculation Control (EGRC) solenoid.

^ Disconnect the vacuum hoses.

^ Attach a hose to port A and blow into it to verify that air does not flow through port B.

^ Apply 12 volts and ground to the EGRC solenoid as shown.

EGR Control Solenoid:

^ Attach a hose to port A and blow into it to verify that air flows through port B.

^ Does the EGRC solenoid function properly?

YES -- Go to EGR2. EGR 2 - Check EGR Vent Solenoid

NO -- Replace the EGRC solenoid.