isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 2014 > < Diagram Information and Instructions|Page 2012
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EGR Vacuum Switching Valve: Testing and Inspection

1.

Disconnect vacuum hoses from solenoid valve.

2.

Turn ignition key "OFF" and disconnect solenoid electrical connector.

3.

Using an ohmmeter, check resistance between solenoid terminals.

4.

If resistance is between 33 and 39 ohms, proceed.

5.

If resistance is not between 33 and 39 ohms, replace solenoid.

6.

Blow into tube"2". Air should pass to filter (not through tube "1".

7.

Reconnect electrical connector.

8.

Turn key "ON" and ground Diagnosis Switch Terminal.

9.

Blow air into tube "2". Air should pass to tube "1".

10.

Replace Vacuum Switch Valve (VSV) if it fails tests.

Diagram Information and Instructions|Page 2014 > < Diagram Information and Instructions|Page 2012