Toyota COMPUTER-CONTROLLED SYSTEM

W INSPECTION AND ADJUSTMENT - ISC Valv e
ISC VALVE (DUTY-CONTROL ACV TYPE )
OBJECTIVE
:
To learn the procedure for inspecting the oxygen sensor .
PREPARATIONS . • Ohmmeter ( also called " circuit tester" or "multi-tester")
• 12-V ba tt e r y
APPLICABLE ENGINE
: 4A-FE ( Sep ., 1989 )
INSPECTION OF ISC VALV E
1 . INSPECT ISC VALVE FOR OPEN CIRCUIT
Using an ohmmeter, check for continuity between the
terminals .
Resistance : 2WD 30 - 33 S2
4WD 30 - 34 1 2
If there is no continuity, replace the ISC valve .
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