Motorcraft Home Technical Resources Home Non-Subscription Resources What's New Body Repair Manuals Diagnostic Tool Support OBDII Theory & Operation Paper/CD Manuals Quick Guides Tools & Equipment Membership Accounts My Shopping Cart Subscription Products Keycode Lookup Reprogramming & Initialization Service Publications Technical Service Bulletins Technical Training Purchase Subscription Ford Specific Acronyms # A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  0-9  (Indexed by Abbreviation) Acronyms Description IAC Idle Air Control. Electrical control of throttle bypass air. IAT Intake Air Temperature IAT2 Intake Air Temperature 2. Used on supercharged vehicles. IAT2V Intake Air Temperature 2 Voltage. Actual voltage drop across the IAT2 sensor. IATV Intake Air Temperature Voltage. Actual voltage drop across the IAT sensor. IC Integrated Circuit. A small semi-conductor device capable of many separate circuit functions. ICM Ignition Control Module. The module that controls the ignition system. IFDM Integrated Fuel Delivery Module IFS Inertia Fuel Shut Off IGN GND Ignition Ground IGN_KEY (IGKY) Ignition Key IGN_SW (IGSW) Ignition Switch Position Ignition System used to provide high voltage spark for internal combustion engines. ILC Generator I-Line Control. A generator feedback signal provided to the PCM. IMRC Intake Manifold Runner Control. Controls or modifies airflow in the intake air system. IMRCM Intake Manifold Runner Control Monitor. Monitors the IMRC circuits for faults. IMTV, IMTV1, IMTV2 Intake Manifold Tuning Valve. Controls airflow through runners in a split intake manifold. INJ1, INJ2, INJ3, IN Injector number or its signal output from the PCM. Injector A device for delivering metered pressurized fuel to the intake system or the cylinders. Intake Air Air drawn through a filter and distributed to each cylinder for use in combustion. Intercooler See CAC. IPATS Integrated Passive Anti-Theft System ISO International Standards Organization ISS Intermediate/Input Shaft Speed Sensor

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