Idle Speed Control (ISC) Motor
WARNING: This page is about a different car, the 1996 Pontiac Firefly and 1996 Geo Metro. However, it is still accessible from the selected car via links, so may be relevant.
Idle Speed Control (ISC) motor is located in lower section of throttle body. If a fault occurs in ISC motor circuit or ISC motor fails, DTC P0505 can set in PCM memory. For testing procedures, see appropriate TESTS W/CODES article. ISC motor is adjusted at the factory. If manual adjustment is attempted, damage to ISC system may occur.