1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OF
BATTERY
CAUTION (w/Airbag): Work must be started after approx.
30 seconds or longer from the time the ignition switch is
turned to the ”LOCK” position and the negative (–) termi-
nal cable is disconnected from the battery.
2. DRAIN ENGINE COOLANT
3. DISCONNECT IAC VALVE CONNECTOR
4. DISCONNECT TWO AIR HOSES
5. DISCONNECT TWO WATER BY–PASS HOSES
6. DISCONNECT PS IDLE UP VACUUM HOSE
7. REMOVE IAC VALVE
Remove the two bolts, IAC valve and gasket.
IAC VALVE INSPECTION
EG0HB–01
INSPECT IAC VALVE OPERATION
(a) Apply battery voltage to terminals B1 and B2, and while
repeatedly grounding S1–S2–S3–S4–S1 in sequence,
check that the valve moves toward the closed position.
(b) Apply battery voltage to terminals B1 and B2, and while
repeatedly grounding S4–S3–S3–S1–S4 in sequence,
check that the valve moves toward the open position.
If operation is not as specified, replace the IAC valve.
EG–212
–ENGINE TROUBLESHOOTING SFI SYSTEM
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