Inspection Of

1. CHECK VSV FOR OPEN CIRCUIT

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

If there is no continuity, replace the VSV.

Ohmmeter

Ohmmeter

2. CHECK VSV FOR GROUND

Using an ohmmeter, check that there is no conitnuity between each terminal and the body.

If there is continuity, replace the VSV.

ec3836

Engine Stopped

EGR Vacuum Modulator

Engine Stopped

EGR Vacuum Modulator

3. CHECK VSV OPERATION

(a) Check that air flows from ports E to G.

(b) Apply battery voltage across the terminals.

(c) Check that air flows from port E to the filter. If operation is not as specified, replace the VSV.

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