DTC P0505: Idle Air Control System Circuit: Notes

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuits are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. If ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION, or appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.

NOTE: If IAC valve or throttle body is replace, throttle body must be balanced. See THROTTLE BODY LEVER ADJUSTMENT in ON-VEHICLE ADJUSTMENTS - V6 & V8 article.