isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Throttle Position Sensor > < Throttle Full Close Switch|Specifications|Page 811
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Throttle Full Close Switch: Testing and Inspection

Idle Switch Testing

1.

Disconnect idle switch vacuum hose and electrical connector.

2.

With an ohmmeter, ensure that there is no continuity between switch connector positive and negative terminals.

3.

With a hand vacuum pump, apply the specified vacuum and check that there is now continuity between the switch terminals.

4.

Replace the switch if it fails these tests.

Throttle Position Sensor > < Throttle Full Close Switch|Specifications|Page 811