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Home >> Pontiac >> 1999 >> Firefly 4D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Control System >> Engine Controls - System/Component Tests >> Idle Speed Control (ISC) Motor (1.0L & 1.3L)
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Idle Speed Control (ISC) Motor (1.0L & 1.3L)

Idle Speed Control (ISC) motor is located in lower section of throttle body. A malfunction in ISC motor circuit can set Diagnostic Trouble Code (DTC) P0505. For test procedure with DTC set, see appropriate SELF-DIAGNOSTICS article. ISC motor is adjusted at the factory. If manual adjustment is attempted, damage to ISC system may occur.