Toyota COMPUTER-CONTROLLED SYSTEM Training Manual page 193

INSPECTION AND ADJUSTMENT - ISC Valv e
2 . INSPECT ISC VALVE FOR GROUNDING
W
Using an ohmmeter, check that there is no continuity
between each terminal and body.
If there is continuity, replace the ISC valve .
3 . INSPECT ISC VALVE OPERATION
(a) Check that air does not flow from pipe E to pipe F .
(b) Apply battery voltage across the terminals .
(c) Check that air flows from pipe E to pipe F .
If operation is not as specified, replace the ISC valve .
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