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Home >> Lexus >> 2005 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> DTC P0505: Idle Air Control System >> Typical Malfunction Thresholds >> IAC Functional Check:
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IAC Functional Check:

TYPICAL MALFUNCTION THRESHOLDS IAC FUNCTIONAL

1. Frequency that both of following conditions (a) and (b) are set: 5 time or more*
(a) Engine RPM - Target engine RPM Less than -1,000 rpm, or more than 150 rpm
(b) Vehicle condition Stop after vehicle was driven by 10 km/h (6 mph) or more
2. Frequency that both of following conditions (a) and (b) are set: Once
(a) Engine RPM - Target engine RPM Below -100 rpm, or 150 rpm or more
(b) IAC flow rate learning value 1.67 L/sec or less, or 9.57 L/sec