Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLINCOLN2009NAVIGATOR 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - DESCRIPTION & OPERATION (EXCEPT DIESEL & HYBRID)
2009 Lincoln Navigator 4WD
Engine Controls - Description & Operation (Except Diesel & Hybrid)
2009 Lincoln Navigator 4WDSECTION Engine Controls - Description & Operation (Except Diesel & Hybrid)
- Vehicle Emission Control Information (VECI)
- Vehicle Certification Label
- Vehicle Emission Control Information (VECI) Acronym Definitions
- Engine Control Components
- Notes
- Accelerator Pedal Position (APP) Sensor
- Air Conditioning (A/C) Clutch Relay (A/CCR)
- Air Conditioning (A/C) Cycling Switch
- Air Conditioning Evaporator Temperature (ACET) Sensor
- Air Conditioning (A/C) High Pressure Switch
- Air Conditioning Pressure (ACP) Transducer Sensor
- Brake Pedal Position (BPP) Switch
- Brake Pedal Switch (BPS)/Brake Deactivator Switch
- Camshaft Position (CMP) Sensor
- Canister Vent (CV) Solenoid
- Check Fuel Cap Indicator
- Clutch Pedal Position (CPP) Switch
- Coil On Plug (COP)
- Coil Pack
- Cooling Fan Clutch
- Crankshaft Position (CKP) Sensor
- Cylinder Head Temperature (CHT) Sensor
- Differential Pressure Feedback Exhaust Gas Recirculation (EGR) Sensor
- Electric Exhaust Gas Recirculation (EEGR) Valve
- Electronic Throttle Actuator Control (TAC)
- Electronic Throttle Body (ETB) Throttle Position Sensor
- Engine Coolant Temperature (ECT) Sensor
- Engine Oil Temperature (EOT) Sensor
- Evaporative Emission (EVAP) Canister Purge Valve
- Exhaust Gas Recirculation (EGR) Orifice Tube Assembly
- Exhaust Gas Recirculation (EGR) System Module (ESM)
- Exhaust Gas Recirculation (EGR) Vacuum Regulator Solenoid
- Exhaust Gas Recirculation (EGR) Valve
- Fan Control
- Fan Speed Sensor (FSS)
- Fuel Injectors
- Fuel Level Input (FLI)
- Fuel Pump (FP) Module
- Fuel Pump (FP) Module and Reservoir
- Fuel Rail Pressure Temperature (FRPT) Sensor
- Fuel Tank Pressure (FTP) Sensor
- Heated Oxygen Sensor (HO2S)
- Idle Air Control (IAC) Valve
- Inertia Fuel Shut-off (IFS) Switch
- Intake Air Temperature (IAT) Sensor
- Intake Manifold Tuning Valve (IMTV)
- Knock Sensor (KS)
- Manifold Absolute Pressure (MAP) Sensor
- Mass Air Flow (MAF) Sensor
- Output Shaft Speed (OSS) Sensor
- Power Steering Pressure (PSP) Sensor
- Power Steering Pressure (PSP) Switch
- Power Take-Off (PTO) Switch and Circuits
- Powertrain Control Module - Vehicle Speed Output (PCM-VSO)
- Secondary Air Injection (AIR) Bypass Solenoid
- Secondary AIR Diverter Valve
- Secondary AIR Pump
- Starter Motor Request (SMR) Circuit
- Throttle Position (TP) Sensor
- Transmission Control Indicator Lamp (TCIL)
- Transmission Control Switch (TCS)
- Universal Heated Oxygen Sensor (HO2S)
- Vehicle Speed Sensor (VSS)
- Electronic Engine Control (EEC) System
- Powertrain Control Hardware
- Powertrain Control Module (PCM)
- PCM Locations
- Fuel Pump Control Module
- Fuel Pump Driver Module (FPDM)
- Keep Alive Memory (KAM)
- Integrated Electronic Ignition System
- Power and Ground Signals
- Electronic Throttle Control Reference Voltage (ETCREF)
- Electronic Throttle Control Return (ETCRTN)
- Gold Plated Pins
- Keep Alive Power (KAPWR)
- Mass Air Flow Return (MAF RTN)
- Power Ground (PWR GND)
- Signal Return (SIG RTN)
- Variable Reluctance Sensor Return (VRSRTN)
- Vehicle Buffered Power (VBPWR)
- Vehicle Power (VPWR)
- Vehicle Reference Voltage (VREF)
- Powertrain Control Software
- Adaptive Airflow
- Computer Controlled Shutdown
- Deceleration Fuel Shut-Off (DFSO)
- Engine RPM/Vehicle Speed Limiter
- Fail-Safe Cooling Strategy
- Failure Mode Effects Management (FMEM)
- Flash Electrically Erasable Programmable Read Only Memory (EEPROM)
- Fuel Trim
- High Speed Controller Area Network (CAN)
- Idle Air Trim
- Idle Speed Control Closed Throttle Determination - Applications Without Electronic Throttle Control (ETC)
- International Standards Organization (ISO) 14229 Diagnostic Trouble Code (DTC) Descriptions
- Multiplexing
- Multiplexing Implementation
- Permanent Diagnostic Trouble Code (DTC)
- Malfunction Indicator Lamp (MIL)
- Catalyst and Exhaust Systems
- Evaporative Emission (EVAP) Systems
- Exhaust Gas Recirculation (EGR) Systems
- Fuel Systems
- Overview
- Electronic Returnless Fuel System (ERFS)
- Fuel Pump Control - ERFS
- Fuel Pump Monitor (FPM) - ERFS
- Mechanical Returnless Fuel System (MRFS) - Single Speed
- Fuel Pump Control - Single Speed MRFS
- Fuel Pump Monitor (FPM) - Single Speed MRFS
- Mechanical Returnless Fuel System (MRFS) - Dual Speed
- Fuel Pump Control - Dual Speed MRFS
- Fuel Pump Monitor (FPM) - Dual Speed MRFS
- Fuel Filters
- Ignition Systems
- Intake Air Systems
- Overview
- Throttle Body System Overview
- Overview of the Intake Manifold Runner Control (IMRC) and Intake Manifold Tuning Valve (IMTV) Systems
- Intake Manifold Runner Control (IMRC) Electric Actuated System
- Intake Manifold Runner Control (IMRC) Vacuum Actuated System
- Intake Manifold Tuning Valve (IMTV) System
- Positive Crankcase Ventilation (PCV) System
- Powertrain Control Module (PCM) Controlled Charging System
- Secondary Air Injection (AIR) System
- Supercharger and Charge Air Cooler (CAC) Systems
- Torque-Based Electronic Throttle Control (ETC)
- Variable Camshaft Timing (VCT) System
- On Board Diagnostics (OBD) Monitors
- Cold Start Emission Reduction Monitor
- Comprehensive Component Monitor (CCM)
- Electric Exhaust Gas Recirculation (EEGR) System Monitor
- Enhanced Thermostat Monitor
- Evaporative Emission (EVAP) Leak Check Monitor
- Exhaust Gas Recirculation (EGR) System Monitor - Differential Pressure Feedback EGR and EGR System Module (ESM)
- Fuel System Monitor
- Heated Oxygen Sensor (HO2S) Monitor
- Misfire Detection Monitor
- Positive Crankcase Ventilation (PCV) System Monitor
- Secondary Air Injection (AIR) System Monitor
- Thermostat Monitor
- Variable Camshaft Timing (VCT) Monitor
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.