Electronic Engine Control System - f-150 & Mark LT Lincoln Mark LT I

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Electronic Engine Controls

The electronic engine controls consist of the following

1. Powertrain control module (PCM)
2. Throttle position (TP) sensor
3. Cylinder head temperature (CHT) sensor
4. Camshaft synchronizer - 4.2L
5. Camshaft position (CMP) sensor
6. Crankshaft position (CKP) sensor
7. Mass air flow (MAF) sensor
8. Heated oxygen sensor (HO2S)
9. Catalyst monitor sensor
10. Knock sensor (KS)
11. Vehicle speed sensor (VSS)

The PCM needs the following inputs to calibrate the engine correctly

1. CMP sensor
2. Engine rpm
3. Cylinder head temperature
4. Amount of engine detonation
5. Crankshaft position
6. Air temperature
7. Throttle position
8. Cylinder head temperature
9. Mass airflow
10. Exhaust oxygen content

The TP sensor

1. sends the PCM a signal indicating the throttle plate angle.
2. is the main input to the PCM from the driver.
3. is incorporated into the electronic throttle body on 4.2L and 4.6L engines.

The CHT sensor

1. is mounted to the wall of the cylinder head and is not connected to any coolant passages.
2. sends the PCM a signal indicating cylinder head temperature. As the cylinder head temperature rises above normal operating temperature, the PCM will turn on the high speed cooling fan. If the temperature continues to rise, the PCM will selectively and alternately disable fuel injectors. The cylinders that are not being fuel injected will act as air pumps to aid in engine cooling. The PCM will also turn on the check engine light and set a DTC. If the cylinder head temperature continues to rise, the check engine light will begin to flash and an additional DTC will be set. Finally, if the cylinder head temperature rises still more, the PCM disables all of the fuel injectors, turning the engine off.

The CMP sensor

1. sends the PCM a signal indicating camshaft position used for fuel synchronization.

The CKP sensor

1. sends the PCM a signal indicating crankshaft position.
2. is essential for calculating spark timing.

The MAF sensor

1. sends the PCM a signal indicating mass airflow rate of air entering the engine.
2. sends the PCM a signal indicating the temperature of the air entering the engine.

The HO2S

1. has the ability to create a voltage signal dependent on exhaust oxygen content.
2. provides feedback information to the PCM used to calculate fuel delivery.

The 4.2L KS is located on the rear of the LH cylinder head. The 4.6L KS is located in the lifter valley. The 5.4L has a unique linear KS located in the lifter valley.

1. The KS sends a signal to the PCM indicating engine detonation.

The VSS

1. is gear driven by the transmission.
2. sends a signal to the PCM indicating vehicle speed. Refer to «AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E»(/lincoln/mark-lt/i-2005-2009/remont/automatic-trans/#automatic-transmission-4r70e4r75e-f150-mark-lt) article.

Refer to the INTRODUCTION - GASOLINE ENGINES article.

Camshaft Position (CMP) Sensor - 4.2L

Material

Scheme 1

REMOVAL AND INSTALLATION

1. Drain the engine cooling system. For additional information, refer to «ENGINE COOLING»(/lincoln/mark-lt/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-system-f-150-mark-lt) article.
2. Remove the bolt and position the heater outlet tube aside. To install, tighten to 10 Nm (89 lb-in).
3. Disconnect the camshaft position (CMP) sensor electrical connector.
4. Remove the bolts and the CMP sensor. To install, tighten to 3 Nm (27 lb-in).
5. To install, reverse the removal procedure.

Camshaft Position (CMP) Sensor - 4.6L (2V)

Material

Scheme 2

1. Disconnect the camshaft position (CMP) sensor electrical connector.
2. Remove the bolt and the CMP sensor. To install, tighten to 10 Nm (89 lb-in).
3. To install, reverse the removal procedure. Lubricate the CMP sensor O-ring seal with clean engine oil prior to installation.

Camshaft Position (CMP) Sensor - 5.4L (3V)

Material

Scheme 3

Scheme 4

LH side

1. Remove the air cleaner inlet pipe and resonator. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/lincoln/mark-lt/i-2005-2009/remont/removal-installation/#intake-air-distribution-system-and-filtering-system-f-150-mark-lt) article.

Both sides

1. Disconnect the camshaft position (CMP) sensor electrical connector.
2. Remove the bolt and the CMP sensor. To install, tighten to 10 Nm (89 lb-in).
3. To install, reverse the removal procedure. Lubricate the CMP sensor O-ring seal with clean engine oil prior to installation.

Camshaft Synchronizer - 4.2L

Special Tools Illustration Tool Name Tool Number Synchronizer Alignment Gauge 303-562 (T96T-12200-A)

Material

Scheme 5

REMOVAL

1. Drain the engine cooling system. For additional information, refer to «ENGINE COOLING»(/lincoln/mark-lt/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-system-f-150-mark-lt) article.
2. Rotate the crankshaft until the No. 1 cylinder is at TDC of the compression stroke.
3. Remove the bolt and position the heater outlet tube aside.
4. Disconnect the camshaft position (CMP) sensor electrical connector.
5. Remove the bolts and the CMP sensor.
6. Remove the bolt and washer assembly and remove the camshaft synchronizer.

INSTALLATION

1. Install the special tool on the camshaft synchronizer by rotating the tool until it engages the notch on the camshaft synchronizer housing.
2. Install the camshaft synchronizer so the arrow on the synchronizer alignment gauge is 54 degrees from the centerline of the engine.
3. Install the camshaft synchronizer bolt and washer assembly. Tighten to 25 N.m (18 lb-ft).
4. Install the CMP sensor and the bolts. Tighten to 3 N.m (27 lb-in).
5. Connect the CMP sensor electrical connector.
6. Position the heater outlet tube and install the bolt. Tighten to 10 N.m (89 lb-in).
7. Fill and bleed the cooling system. For additional information, refer to «ENGINE COOLING»(/lincoln/mark-lt/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-system-f-150-mark-lt) article.

Charge Motion Control Valve (CMCV) - 5.4L (3V)

Note. The charge motion control valve (CMCV) is sometimes referred to as the intake manifold runner control (IMRC) actuator in the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

Scheme 6

1. Remove the intake manifold. For additional information, refer to «ENGINE - 5.4L (3V)»(/lincoln/mark-lt/i-2005-2009/remont/mechanical/#engine-54l-3v-f-150-mark-lt) article.
2. Disconnect the charge motion control valve (CMCV) rods.
3. Remove the stud bolt, the bolts and the CMCV. To install, tighten to 10 Nm (89 lb-in).
4. To install, reverse the removal procedure.

Scheme 7

1. Disconnect the clutch pedal position (CPP) switch electrical connector.
2. Detach the pushrod from the clutch lever pin.
3. Remove the CPP switch.
4. To install, reverse the removal procedure.

Scheme 8

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Disconnect the crankshaft position (CKP) sensor electrical connector.
3. Remove the bolts and the CKP sensor. To install, tighten to 6 Nm (53 lb-in).
4. To install, reverse the removal procedure.

Crankshaft Position (CKP) Sensor - 4.6L (2V) and 5.4L (3V)

Material

Scheme 9

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Remove the accessory drive belt.
3. If equipped, remove the 2 bolts and position the power steering fluid cooler aside. To install, tighten to 11 Nm (8 lb-ft).
4. Loosen the A/C compressor bolts enough to slide the A/C compressor down 25 mm (1 in), to allow access to the crankshaft position (CKP) sensor. To install, tighten to 25 Nm (18 lb-ft).
5. Disconnect the CKP sensor electrical connector.
6. Remove the bolt and the CKP sensor. To install, tighten to 10 Nm (89 lb-in).
7. To install, reverse the removal procedure. Lubricate the O-ring seal with clean engine oil prior to installation.

Scheme 10

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Disconnect the cylinder head temperature (CHT) sensor electrical connector.
3. Remove the CHT sensor. To install, tighten to 12 Nm (9 lb-ft).
4. To install, reverse the removal procedure.

Cylinder Head Temperature (CHT) Sensor - 4.6L (2V)

Material

Scheme 11

1. Remove the generator. For additional information, refer to «GENERATOR AND REGULATOR»(/lincoln/mark-lt/i-2005-2009/remont/charging-system/#generator-and-regulator-f-150-mark-lt) article.
2. Disconnect the cylinder head temperature (CHT) sensor electrical connector.
3. Remove the CHT sensor. To install, tighten to 10 Nm (89 lb-in).
4. To install, reverse the removal procedure. Apply anti-seize to the threads of the CHT sensor.

Cylinder Head Temperature (CHT) Sensor - 5.4L (3V)

Material

Scheme 12

1. Remove the intake manifold. For additional information, refer to «ENGINE - 5.4L (3V)»(/lincoln/mark-lt/i-2005-2009/remont/mechanical/#engine-54l-3v-f-150-mark-lt) article.
2. Disconnect the cylinder head temperature (CHT) sensor electrical connector.
3. Remove the CHT. To install, tighten to 10 Nm (89 lb-in).
4. To install, reverse the removal procedure. Apply anti-seize to the threads of the CHT sensor.

Scheme 13

1. For additional information, refer to the procedures in this article.

Heated Oxygen Sensor (HO2S) - 4.2L

Special Tools Illustration Tool Name Tool Number Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. If necessary, detach the electrical connector from the RH inner fender splash shield.
3. If necessary, remove the 6 screws, the pushpin and the RH inner fender splash shield.
4. Disconnect the heated oxygen sensor (HO2S) electrical connector.
5. Using the special tool, remove the HO2S. To install, tighten to 46 N.m (34 lb-ft).
6. To install, reverse the removal procedure.

Catalyst Monitor Sensor - 4.2L

Special Tools Illustration Tool Name Tool Number Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Disconnect the catalyst monitor sensor electrical connector.
3. Using the special tool, remove the catalyst monitor sensor. To install, tighten to 46 N.m (34 lb-ft).
4. To install, reverse the removal procedure.

Scheme 14

1. For additional information, refer to the procedures in this article.

Heated Oxygen Sensor (HO2S) - 4.6L (2V) and 5.4L (3V)

Special Tools Illustration Tool Name Tool Number Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Using the special tool, remove the HO2S. To install, tighten to 46 Nm (34 lb-ft).
3. To install, reverse the removal procedure. Apply anti-seize to the threads of the HO2S.

Catalyst Monitor Sensor - 4.6L (2V) and 5.4L (3V)

Special Tools Illustration Tool Name Tool Number Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Using the special tool, remove the catalyst monitor sensor. To install, tighten to 46 Nm (34 lb-ft).
3. To install, reverse the removal procedure. Apply anti-seize to the threads of the catalyst monitor sensor.

Fuel Rail Pressure and Temperature Sensor - 4.6L (2V)

Material

Scheme 15

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/mark-lt/i-2005-2009/remont/fuel-system/#fuel-system-general-information-f-150-mark-lt) article.
2. Disconnect the fuel pressure and temperature sensor electrical connector.
3. Disconnect the fuel pressure and temperature sensor vacuum connector.
4. Remove the bolts and the fuel pressure and temperature sensor. To install, tighten to 4 Nm (35 lb-in).
5. Remove and discard the O-ring seal. Install a new O-ring seal and lubricate with clean engine oil prior to installation.
6. To install, reverse the removal procedure.

Fuel Rail Pressure and Temperature Sensor - 4.2L

Material

Scheme 16

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/mark-lt/i-2005-2009/remont/fuel-system/#fuel-system-general-information-f-150-mark-lt) article.
2. Disconnect the fuel rail pressure and temperature sensor electrical connector.
3. Disconnect the fuel rail pressure and temperature sensor vacuum connector.
4. Remove the bolts and the fuel rail pressure and temperature sensor. To install, tighten to 6 Nm (53 lb-in).
5. Remove and discard the O-ring seal. Install a new O-ring seal and lubricate with clean engine oil prior to installation.
6. To install, reverse the removal procedure.

Fuel Rail Pressure and Temperature Sensor - 5.4L (3V)

Material

Scheme 17

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/mark-lt/i-2005-2009/remont/fuel-system/#fuel-system-general-information-f-150-mark-lt) article.
2. Disconnect the fuel rail pressure and temperature sensor electrical connector.
3. Disconnect the fuel rail pressure and temperature sensor vacuum connector.
4. Remove the bolts and the fuel rail pressure and temperature sensor. To install, tighten to 4 Nm (35 lb-in).
5. Remove and discard the O-ring seal. Install a new O-ring seal and lubricate it with clean engine oil.
6. To install, reverse the removal procedure.

Scheme 18

1. Remove the upper intake manifold. For additional information, refer to «ENGINE - 4.2L»(ref-268535) article.
2. Disconnect the intake manifold runner control (IMRC) electrical connector.
3. Disconnect the IMRC actuator rods.
4. Remove the bolts and the IMRC actuator. To install, tighten to 10 Nm (89 lb-in).
5. Inspect the IMRL actuator rod retainers. Install new retainers if damaged.
6. To install, reverse the removal procedure.

Scheme 19

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Remove the bolt and position the fuel tube bracket aside.
3. Disconnect the knock sensor (KS) electrical connector.
4. Remove the bolt and the KS. To install, tighten to 20 Nm (15 lb-ft).
5. To install, reverse the removal procedure.

Scheme 20

1. Remove the intake manifold. For additional information, refer to «ENGINE - 4.6L (2V)»(ref-268521) article.
2. Disconnect the knock sensor (KS) electrical connector.
3. Remove the bolt and the KS. To install, tighten to 20 Nm (15 lb-ft).
4. To install, reverse the removal procedure.

Scheme 21

1. Remove the intake manifold. For additional information, refer to «ENGINE - 5.4L (3V)»(/lincoln/mark-lt/i-2005-2009/remont/mechanical/#engine-54l-3v-f-150-mark-lt) article.
2. Disconnect the knock sensor (KS) electrical connectors.
3. Remove the bolts and the 2 KS. To install, tighten to 20 Nm (15 lb-ft).
4. To install, reverse the removal procedure.

Scheme 22

1. Release the clamp and detach the air cleaner cover from the air cleaner tray.
2. Lift the air cleaner tray from the grommets and remove the air cleaner tray.
3. Disconnect the mass air flow (MAF) sensor electrical connector and detach the electrical connector retainer.
4. Remove the grommet from the air cleaner cover and slide it down the wiring harness to allow the removal of the air cleaner inner cover and the MAF sensor.
5. Detach the air cleaner inner cover and pull the inner cover and MAF sensor out of the air cleaner cover and disconnect the MAF sensor jumper wire.
6. Remove the bolts and the MAF sensor. To install, tighten to 10 Nm (89 lb-in).

Scheme 23

1. Open the clamp on the air cleaner and separate the tray from the cover.
2. Disconnect the mass air flow (MAF) sensor electrical connector and detach the connector retainer.
3. Remove the grommet from the air cleaner cover and slide it down the electrical harness.
4. Pull the air cleaner inner cover and MAF sensor out of the air cleaner cover.
5. Disconnect the MAF sensor electrical connector and remove the inner cover and MAF sensor assembly.
6. Remove the bolts and the MAF sensor. To install, tighten to 2 Nm (18 lb-in).
7. To install, reverse the removal procedure.

Scheme 24

1. Disconnect the mass air flow (MAF) sensor electrical connector.
2. Remove the bolts and the MAF sensor. To install, tighten to 7 Nm (62 lb-in).
3. To install, reverse the removal procedure.

Oil Temperature Sensor - 4.6L (2V)

Material

Scheme 25

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/mark-lt/i-2005-2009/remont/hoistjack/#jacking-and-lifting-f-150-mark-lt) article.
2. Remove the oil drain plug and drain the engine oil. To install, tighten to 23 Nm (17 lb-ft).
3. Disconnect the oil temperature sensor electrical connector.
4. Remove the oil temperature sensor. To install, tighten to 21 Nm (15 lb-ft).
5. To install, reverse the removal procedure.

Scheme 26

1. Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation procedure. For additional information, refer to «MODULE CONFIGURATION»(/lincoln/mark-lt/i-2005-2009/remont/communication-devices/#module-configuration-f-150-mark-lt) article.
2. Disconnect the PCM electrical connectors.
3. Remove the bolts and the PCM.
4. If necessary, remove the bolts and the PCM bracket.

1. If necessary, install the PCM bracket and the bolts. Tighten to 10 Nm (89 lb-in).
2. Install the PCM and the bolts. Tighten to 7 Nm (62 lb-in).
3. Connect the PCM electrical connectors.
4. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation procedure. For additional information, refer to «MODULE CONFIGURATION»(/lincoln/mark-lt/i-2005-2009/remont/communication-devices/#module-configuration-f-150-mark-lt) article.
5. Reprogram the passive anti-theft system (PATS). Carry out the Key Programming Using Two Programmed Keys procedure. For additional information, refer to «ANTI-THEFT»(/lincoln/mark-lt/i-2005-2009/remont/door-locks-anti-theft-systems/#anti-theft-system-f-150-mark-lt) article.

Scheme 27

1. Disconnect the throttle position (TP) sensor electrical connector.
2. Remove and discard the 2 screws and the TP sensor.

1. Position the new TP sensor and install the 2 new screws. Tighten to 3 Nm (27 lb-in).
2. Connect the TP sensor electrical connector.

Variable Camshaft Timing (VCT) Oil Control Solenoid - 5.4L (3V)

Note. LH shown, RH similar.

Scheme 28

1. Remove the valve cover - LH or valve cover - RH. For additional information, refer to «ENGINE - 5.4L (3V)»(/lincoln/mark-lt/i-2005-2009/remont/mechanical/#engine-54l-3v-f-150-mark-lt) article.
2. Remove the bolt and the VCT oil control solenoid. To install, tighten to 5 Nm (44 lb-in).
3. To install, reverse the removal procedure.

See also:
• AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E
• INTRODUCTION - GASOLINE ENGINES
• ENGINE COOLING
• INTAKE AIR DISTRIBUTION AND FILTERING
• ENGINE - 5.4L (3V)
• JACKING AND LIFTING
• GENERATOR AND REGULATOR
• FUEL SYSTEM - GENERAL INFORMATION
• MODULE CONFIGURATION
• ANTI-THEFT