S6 Wagon L5-2226cc 2.22L DOHC Turbo (AAN) (1995)
Idle Air Control Valve: Testing and Inspection
Electrical Check
Idle Air Control Valve Connection
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Disconnect Idle Air Control (IAC) valve harness connector (arrow).
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Switch Digital Volt Ohm Multimeter (DVOM) to resistance range.
Idle Air Control Valve Testing
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Connect multimeter across IAC valve terminals.
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Must be 7-11 Ohms.
If NO:
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Replace IAC valve.
Mechanical Check
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Remove IAC valve from engine, leaving harness connector connected.
Idle Air Control Valve Inspection
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Inspect rotary slide valve (arrow) for scoring.
CAUTION!:
When checking valve travel, DO NOT move rotary slide valve with screwdriver or other tool.
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Initiate Output Diagnostic Test Mode (DTM) until IAC valve is actuated. Refer to On-Board Diagnostics. See: Computers and Control
Systems/Testing and Inspection
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Check whether rotary slide valve travels properly from stop to stop.
If scoring is severe enough to impair free movement.
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Replace IAC valve.