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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 670 (ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID))ACRONYMS AND DEFINITIONS
2010 Mercury Mariner Hybrid, AWD

Acronyms and Definitions

2010 Mercury Mariner Hybrid, AWDSECTION Acronyms and Definitions
WARNING: This page does not describe the selected car, but rather 29 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: This acronyms and definitions listing contains technical terms applicable to Ford Motor Company products. It is not intended to be an all-inclusive dictionary of components and their functions. If a detailed description of a particular system or component is desired, refer to the applicable ENGINE PERFORMANCE article or consult the service information article for the specific vehicle being repaired.
  1. 2V: Two valves per engine cylinder
  2. 3V: Three valves per engine cylinder
  3. 4V: Four valves per engine cylinder
  4. 4WD: Four Wheel Drive
  5. ABS: Anti-lock Brake System
  6. A/C: Air Conditioning
  7. A/CC: Air Conditioning Clutch
  8. A/CCR: Air Conditioning Clutch Control Relay
  9. ACCS: Air Conditioning Cycling Switch
  10. ACDS: Air Conditioning Diagnostic Switch (refrigerant containment switch)
  11. ACET: Air Conditioning Evaporator Temperature
  12. ACP: Air Conditioning Pressure
  13. ACPSW: Air Conditioning Pressure Switch
  14. A/D: Analog-to-Digital. Analog-to-Digital signal conversion.
  15. AIR: Secondary Air Injection
  16. APP: Accelerator Pedal Position
  17. BARO: Barometric Pressure
  18. BJB: Battery Junction Box
  19. BPP: Brake Pedal Position
  20. BPS: Brake Pedal Switch
  21. BTDC: Before Top Dead Center. The location of the piston before it has reached the top of its stroke. Measured in degrees of crankshaft rotation.
  22. CAC: Charge Air Cooler. A device which lowers the temperature of pressurized intake air.
  23. CAN: Controller Area Network
  24. CCM: Comprehensive Component Monitor
  25. CF: Cooling Fan
  26. CHT: Cylinder Head Temperature
  27. CKP: Crankshaft Position
  28. CL: Closed Loop. An operating condition or mode which enables operation based on sensor feedback.
  29. CMCV: Charge Motion Control Valve
  30. CMP: Camshaft Position
  31. CO: Carbon Monoxide. A colorless, odorless, and toxic gas that is a component of auto exhaust emissions.
  32. CO2 : Carbon Dioxide. A colorless, odorless gas that is a normal by-product of the combustion of fuel.
  33. COP: Coil On Plug. Ignition coil on plug assembly.
  34. CPP: Clutch Pedal Position
  35. CPR: Cardiopulmonary Resuscitation
  36. CPU: Central Processing Unit
  37. CTO: Clean Tach Output. Signal used to drive the instrument panel tachometer.
  38. CV: Canister Vent Solenoid. A solenoid which seals the evaporative emission (EVAP) system from the atmosphere during the EVAP monitor test.
  39. CVT: Continuously Variable Transmission
  40. DBA: Driver Brake Application
  41. DC: 1. Direct Current. Electric current flowing in one direction. 2. Duty Cycle. The voltage measurement of ON time versus the full cycle period, expressed in percent.
  42. DEPS: Dual Equal Phase Shifting
  43. DIPS: Dual Independent Phase Shifting
  44. DLC: Data Link Connector. SAE standard J1962 connector providing access to vehicle diagnostic information.
  45. DMM: Digital Multimeter
  46. DRI: Deposit Resistant Injector
  47. DTM: Diagnostic Test Mode. A level of capability in an OBD system.
  48. DTC: Diagnostic Trouble Code. An alpha/numeric identifier for a concern identified by the OBD system.
  49. E10: Fuel containing 10% ethanol
  50. E85: Fuel containing 85% ethanol
  51. EATC: Electronic Automatic Temperature Control
  52. ECM: Electronic Control Module
  53. ECT: Engine Coolant Temperature
  54. EEC: Electronic Engine Control
  55. EEGR: Electric Exhaust Gas Recirculation System
  56. EEPROM: Electrically Erasable Programmable Read-Only Memory. An electronic component in the PCM that allows the electronic storage of information.
  57. EGR: Exhaust Gas Recirculation. A process in which a small amount of exhaust gas is routed into the combustion chamber.
  58. EI: Electronic Ignition. An electronic ignition system that has the ignition control module integrated into the PCM.
  59. EMD: Engine Manufacturers Diagnostics
  60. EMI: Electromagnetic Interference. Usually caused by ignition voltage spikes, solenoids, relay operation, or noisy generator contacts.
  61. EONV: Engine Off Natural Vacuum
  62. EOT: Engine Oil Temperature
  63. EPS: Exhaust Phase Shifting
  64. E-Quizzer: Enhanced Quizzer
  65. ERFS: Electronic Returnless Fuel System
  66. ESM: EGR System Module
  67. ESOF: Electronic Shift-on-the-Fly
  68. ETB: Electronic Throttle Body
  69. ETBTACM: Electronic Throttle Body Throttle Actuator Control Motor
  70. ETBTPS: Electronic Throttle Body Throttle Position Sensor
  71. ETC: Electronic Throttle Control
  72. ETCREF: Electronic Throttle Control Reference Voltage. 5V for ETC (APP VREF, TP VREF).
  73. ETCRTN: Electronic Throttle Control Return
  74. EVAPCP: Evaporative Canister Purge Valve. A valve which controls the venting of fuel vapor from the evaporative emissions canister into the intake manifold for combustion.
  75. FAOS: Fore-Aft Oxygen Sensor
  76. FC: Fan Control
  77. FCIL: Fuel Cap Indicator Lamp. Indicates that the fuel filler cap is not correctly installed.
  78. FEPS: Flash EEPROM Programming Signal. An 18-volt DC signal input from the scan tool used by the PCM to initiate programming.
  79. FFV: Flexible Fuel Vehicle
  80. FLI: Fuel Level Input. Provides information on the amount of liquid fuel in the fuel tank. Used by the EVAP monitor to calculate the fuel tank vapor volume. Displayed as a percentage.
  81. FMEM: Failure Mode Effects Management. Operating strategy that maintains limited vehicle function in the event of a PCM or EEC component failure.
  82. FP: 1. Fuel Pump. Indicates whether the pump has been commanded ON or OFF by the PCM. 2. Fuel Pump (Modulated). Fuel pump duty cycle percentage.
  83. FPC: Fuel Pump Control
  84. FPDM: Fuel Pump Driver Module. A module that controls the electric fuel pump.
  85. FPM: Fuel Pump Monitor
  86. FRP: Fuel Rail Pressure
  87. FRPT: Fuel Rail Pressure Temperature
  88. FSS: Fan Speed Sensor
  89. FTP: Fuel Tank Pressure
  90. FWD: Front Wheel Drive
  91. GND: Ground
  92. GPM: 1. Grams per Mile. 2. Gallons per Minute.
  93. H: Hydrogen
  94. HC: 1. Hydrocarbon. A by-product of combustion and a component of auto exhaust emissions. 2. High Compression.
  95. HDR: High Data Rate
  96. HFC: High Fan Control
  97. HLOS: Hardware Limited Operating Strategy. A mode of operation where the PCM uses fixed values in response to internal PCM concerns in place of output commands.
  98. HO2S: Heated Oxygen Sensor. Provides information on rich or lean exhaust conditions to the PCM.
  99. Hz: Hertz. Cycles per second.
  100. IAC: Idle Air Control. Electrical control of throttle bypass air.
  101. IAT: Intake Air Temperature
  102. IAT2: Intake Air Temperature 2. Used on supercharged vehicles.
  103. IC: Integrated Circuit. A small semi-conductor device capable of many separate circuit functions.
  104. IDM: Ignition Diagnostic Monitor
  105. IFS: Inertia Fuel Shut-Off
  106. I/M: Inspection/Maintenance
  107. IMRC: Intake Manifold Runner Control. Controls or modifies airflow in the intake air system.
  108. IMRCM: Intake Manifold Runner Control Monitor. Monitors the IMRC circuits for concerns.
  109. IMTV: Intake Manifold Tuning Valve. Controls airflow through runners in a split intake manifold.
  110. INJ: Injector
  111. IPC: Independent Plausibility Checker
  112. IPS: Intake Phase Shifting
  113. ISO: International Standards Organization
  114. KAM: Keep Alive Memory. A portion of the memory within the PCM that must have power even when the vehicle is not operating.
  115. KAPWR: Keep Alive Power. A dedicated and unswitched power circuit that maintains KAM.
  116. KOEO Self-Test: Key On Engine Off self-test. A test of the EEC system conducted by the PCM with power applied and the engine at rest.
  117. KOER Self-Test: Key On Engine Running self-test. A test of the EEC system conducted by the PCM with the engine running and the vehicle at rest.
  118. Km/h: Kilometers per Hour
  119. kPa: Kilopascal. Unit of pressure. 3.386 kPa equals 1 (in-Hg).
  120. KS: Knock Sensor
  121. L: Liters. The unit of volume in the metric measuring system. One liter equals 1.06 quarts.
  122. LCM: Lighting Control Module
  123. LDR: Low Data Rate
  124. LFC: Low Fan Control
  125. LONGFT: Long-Term Fuel Trim. Fuel flow adjustment determined by the PCM.
  126. LOS: Limited Operating Strategy
  127. LSRC: Long Short Runner Control
  128. MAF: Mass Air Flow
  129. MAP: Manifold Absolute Pressure. The internal pressure of the intake manifold.
  130. MFC: Medium Fan Control
  131. MFF: Misfire Freeze Frame
  132. MIL: Malfunction Indicator Lamp. An indicator lamp alerting the driver of an emission related concern.
  133. MRFS: Mechanical Returnless Fuel System
  134. MSOF: Manual Shift-on-the-Fly
  135. N: Nitrogen
  136. NMOG: Non-Methane Organic Gases
  137. NOX : Oxides of Nitrogen. Gasses formed at high combustion temperatures.
  138. OHC: Overhead Cam. An engine configuration that uses a single camshaft positioned above the valves.
  139. OL: Open Loop. An operating condition based on instructions not modified by PCM feedback.
  140. OSC: Output State Control
  141. OSR: On-Board System Readiness
  142. OTM: Output Test Mode
  143. PATS: Passive Anti-Theft System
  144. PCM: Powertrain Control Module. Formerly known as the electronic engine control (EEC) processor.
  145. PCM-VSO: Powertrain Control Module - Vehicle Speed Output
  146. PCV: Positive Crankcase Ventilation. A system which allows the controlled flow of crankcase vapors into the combustion chamber.
  147. PCVTE: Positive Crankcase Ventilation Thermal Extension
  148. Pd: Palladium
  149. PDJB: Power Distribution Junction Box
  150. PID: Parameter Identifier. Identifies an address in the PCM memory which contains operating information.
  151. PIP: Profile Ignition Pickup. Provides crankshaft position information for ignition synchronization.
  152. PPM: Parts per Million. A measure used in emission analysis.
  153. PS: Pressure Switch
  154. PSP: Power Steering Pressure. Indicates the pressure in the power steering system.
  155. PSPT: Power Steering Pressure Transducer
  156. Pt: Platinum
  157. PTO: Power Take-Off
  158. PTS: Professional Technician Society
  159. PWM: Pulse Width Modulation. Controls the intensity of an output by varying the signal duty cycle.
  160. PWR GND: Power Ground. The main ground circuit in the EEC system.
  161. RAM: Random Access Memory. Memory into which information can be written as well as read.
  162. RFI: Radio Frequency Interference
  163. Rh: Rhodium
  164. ROM: Read-Only Memory. Computer memory that can be accessed and used, but not altered.
  165. RPM: Revolutions Per Minute
  166. RWD: Rear Wheel Drive
  167. SAE: Society of Automotive Engineers
  168. SCB: Supercharger Bypass
  169. SFI: Sequential Multiport Fuel Injection. A multiport fuel delivery system in which each injector is individually energized and timed relative to its cylinder intake event.
  170. SHRTFT: Short-Term Fuel Trim. Fuel flow adjustment in response to the HO2S sensor(s) input during closed-loop operation.
  171. SIG RTN: Signal Return. A dedicated sensor ground circuit that is common to 2 or more sensors.
  172. SJB: Smart Junction Box
  173. SMR: Starter Motor Request
  174. TAC: Throttle Actuator Control
  175. TACM: Throttle Actuator Control Motor
  176. TCM: Transmission Control Module
  177. TCSS: Transfer Case Speed Sensor
  178. TDC: Top Dead Center
  179. TP: Throttle Position
  180. TPPC: Throttle Plate Position Controller
  181. TSB: Technical Service Bulletin. Notifies technician of any known vehicle concerns, procedures, or general repair information.
  182. TWC: Three-Way Catalytic
  183. VBPWR: Vehicle Buffered Power. A PCM-supplied power source that supplies regulated voltage.
  184. VCM: Vehicle Communication Module
  185. VCT: Variable Camshaft Timing
  186. VECI: Vehicle Emission Control Information
  187. VID: Vehicle Identification
  188. VIN: Vehicle Identification Number. A unique identification number given to every vehicle produced. Includes information about the year, model, engine, and plant origin of the vehicle.
  189. VMV: Vapor Management Valve. Also known as EVAPCP. Refer to EVAPCP.
  190. VPWR: Vehicle Power. A switched circuit that provides power to the EEC system. Compare to battery voltage (B+).
  191. VR: Variable Reluctance
  192. VREF: Reference Voltage. A dedicated circuit that provides an approximately 5.0 volt signal used as a reference by certain sensors.
  193. WAC: Wide Open Throttle Air Conditioning Cutoff
  194. WDS: Worldwide Diagnostic System
  195. WOT: Wide Open Throttle. A condition of maximum airflow through the throttle body.
  196. Transmissions:
    NOTE: The automatic transmission naming convention is as follows:
    • The first character, a number, is the number of forward gears.
    • The second character, either the letter F or R, represents front (transaxle) or rear (transmission) wheel drive.
    • The next set of characters, a grouping of numbers, represents the design torque capacity of the transmission/transaxle.
    • The last character, if used, is one of the following:
      • E for electronic shift
      • N for non-synchronous shift
      • S for synchronous shift
      • W for wide ratio

      • As an example, for the 4F27E transaxle, the number of forward gears is 4, the character F indicates front transaxle, 27 represents 270 ft-lbs of torque capacity and the character E represents an electronic shift.

  197. A/T: Automatic Transmission
  198. CCS: Coast Clutch Solenoid
  199. EPC: Electronic Pressure Control
  200. ESS: Electronic Shift Scheduling
  201. ISS: Intermediate/Input Shaft Speed Sensor
  202. M/T: Manual Transmission/Transaxle
  203. OCS: Overdrive Cancel Switch
  204. OSS: Output Shaft Speed. Indicates the rotational speed of the transmission output shaft.
  205. PNP: Park/Neutral Position switch.
  206. REVERSE or REV: Transmission Reverse Switch Input
  207. SSA/SSB/SSC/SSD/SSE: Shift solenoids. Devices in an automatic transmission that control the shifting by varying fluid flow when commanded by the PCM.
  208. SS1/SS2/SS3: Shift solenoids. Devices in an automatic transmission that control the shifting by varying fluid flow when commanded by the PCM.
  209. TCC/TCCH: Torque Converter Clutch. When energized, causes a mechanical engagement and disengagement of the torque converter clutch.
  210. TCIL: Transmission Control Indicator Lamp. Indicates that the TCS has been activated.
  211. TCS: Transmission Control Switch. Modifies the operation of electronically controlled transmissions.
  212. TFT: Transmission Fluid Temperature. Indicates the temperature of transmission fluid.
  213. TR: Transmission Range. The range in which the transmission is operating.
  214. TSS: Turbine Shaft Speed. Indicates the rotational speed of the transmission turbine shaft.
  215. VSS: Vehicle Speed Sensor. A magnetic pickup device that generates an AC signal that is proportional to the vehicle speed.
  216. VSOUT: Vehicle Speed Output. A pulse width modulated vehicle speed signal.
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