DTC P0505-00: IAC System Problem: Notes

DTC P0505:00	IAC system problem
DETECTION CONDITION	The PCM cannot control idle speed toward target idle speed while KOER self test. Diagnostic support note The check engine light does not illuminate. FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. The DTC is not stored in the PCM memory.
FAIL-SAFE FUNCTION	-
POSSIBLE CAUSE	Improper operation of drive-by-wire control system A/C relay control circuit malfunction Generator control circuit malfunction Air cleaner element restricted Air intake passage blockage (throttle body passage blockage) Low engine compression (over capacity of blow-by gas) PCM malfunction
SYSTEM WIRING DIAGRAM	-