EGR Control Solenoid: Testing and Inspection

INSPECTION PROCEDURES

Vacuum Switching Valve (VSV) For EGR:

1. REMOVE VSV.
(a) Disconnect the following connector and hoses:



(1) Connector
(2) Hose (from throttle body) from port E of VSV
(3) Hose (from EGR valve and vacuum modulator) from port F of VSV
(b) Remove the bolt and VSV.

2. INSPECT VSV.
(A) Inspect VSV for open circuit.



- Using an ohmmeter, check that there is continuity between the terminals.

Resistance at 20°C (68°F): 38.5 - 44.5 Ohms

^ If there is no continuity, replace the VSV.

(B) Inspect VSV for ground.



- Using an ohmmeter, check that there is no continuity between each terminal and the body.
^ If there is continuity, replace the VSV.

(C) Inspect VSV operation.



(1) Check that the air does not flow from port E to port F.



(2) Apply battery voltage across the terminals.
(3) Check that the air flows from port E to port F.
^ If operation is not as specified, replace the VSV.

3. REINSTALL VSV.
(a) Install the VSV with the bolt.
(b) Connect the following connector and hoses:



(1) Connector
(2) Hose (from throttle body) to port E of VSV
(3) Hose (from EGR valve and vacuum modulator) to port F of VSV