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DTC P0505: IDLE CONTROL SYSTEM Chevrolet Tracker II

Testing & Diagnostics 1 illustration

Note. For circuit reference, see WIRING DIAGRAMS article.

Scheme 11

Scheme 11: DTC P0505: IDLE CONTROL SYSTEM

Scheme 11: DTC P0505: IDLE CONTROL SYSTEM

Circuit Description

PCM controls Idle Air Control (IAC) valve in order to regulate air flow through idle air by-pass passage. Amount of air flowing through idle air by-pass passage determines idle speed. IAC valve is regulated according to engine load. A stalling condition could be caused by IAC valve not functioning properly.