Electronic Engine Controls Ford Explorer Sport Trac II

Material

Material

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

The electronic engine controls consist of the

1. PCM.
2. throttle position (TP) sensor.
3. engine coolant temperature (ECT) sensor (4.0L SOHC).
4. cylinder head temperature (CHT) sensor (4.6L [3V]).
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. charge motion control valve (CMCV) (4.6L [3V]).
12. variable camshaft timing (VCT) oil control solenoid (4.6L [3V]).

The PCM carries out the following functions

1. accepts input from various engine sensors to compute the fuel flow rate necessary to maintain a prescribed air/fuel ratio throughout the entire engine operational range.
2. outputs a command to the fuel injectors to meter the appropriate quantity of fuel.
3. switches the PCV valve heat ON and OFF.

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.

The ECT sensor (4.0L SOHC)

1. sends the PCM a signal indicating engine temperature.
2. voltage decreases as coolant temperature increases.

The CHT sensor (4.6L 3V)

1. is mounted to the wall of the cylinder head and is not connected to any coolant passages.

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. uses a hot wire sensing element to measure the amount of air entering the engine. Air passing over the hot wire causes it to cool.

The HO2S

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

The catalyst monitor sensor

1. monitors oxygen content after it flows through the catalytic converter.
2. provides a voltage to the PCM used to calculate catalytic converter integrity.

The KS (4.0L SOHC only)

1. is used to detect engine detonation.
2. sends a voltage signal to the PCM.
3. is able to provide a signal which retards the ignition timing, as necessary.

The 4.6L (3V) air induction system improves engine performance by using the CMCV assemblies as follows

1. The intake manifold has 2 runners per cylinder, feeding each of the intake ports in the cylinder heads.
2. The CMCV assemblies are located between the intake manifold and the cylinder heads, providing 2 air passages for each cylinder.
3. One air passage is always open and the other passage switches from closed to open by means of a valve plate.
4. The valve plates are opened and closed by the CMCV electric actuator, which is controlled by the PCM.

The VCT oil control solenoid

1. is an electrically controlled hydraulic valve that directs engine oil to the variable camshaft. Once the PCM transmits a signal, the solenoid moves a valve spool, directing oil into the camshaft phaser cavity. This action changes valve timing by either inducing an advance or retard condition. The camshaft is thereby repositioned in relation to crankshaft timing and allows for optimum engine performance and lower emissions.

Refer to the Introduction - Gasoline Engines article.

Scheme 4

REMOVAL AND INSTALLATION

1. Disconnect the camshaft position (CMP) sensor electrical connector.
2. Remove the bolt and the CMP sensor. To install, tighten to 6 N.m (53 lb-in).
3. To install, reverse the removal procedure.

Scheme 5

RH side

1. Remove the air cleaner (ACL) outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
2. Disconnect the camshaft position (CMP) sensor electrical connector.
3. Remove the bolt and the CMP sensor. To install, tighten to 10 Nm (89 lb-in).
4. To install, reverse the removal procedure.

Scheme 6

REMOVAL

1. Remove the intake manifold. For additional information, refer to «ENGINE - 4.6L (3V)»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-46l-3v) article.
2. Remove and discard the 2 E-clips and disconnect the charge motion control valve (CMCV) linkages from the CMCV.
3. Rotate each CMCV shaft by hand to verify that they do not stick or bind.
4. Remove the 3 bolts and the CMCV.

INSTALLATION

1. Position the CMCV and loosely install the 3 bolts. Do not tighten the bolts at this time.
2. Rotate each CMCV shaft so that the plates are in the closed position.
3. Install the RH and LH CMCV plate alignment locks.
4. Connect the RH and LH CMCV linkages to the CMCV and install 2 new E-clips.
5. Verify that the CMCV plate alignment locks are still correctly located and tighten the 3 CMCV bolts. Tighten to 10 Nm (89 lb-in).
6. Remove the RH and LH alignment locks.
7. Install the intake manifold. For additional information, refer to «ENGINE - 4.6L (3V)»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-46l-3v) article.
8. Carry out the key ON engine OFF (KOEO) self-test. For additional information, refer to «Introduction - Gasoline Engines»(/ford/explorer-sport-trac/ii-2006-2010/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Scheme 7

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. Disconnect the crankshaft position (CKP) sensor electrical connector.
3. Remove the bolt and the CKP sensor. To install, tighten to 10 N.m (89 lb-in).
4. To install, reverse the removal procedure.

Scheme 8

Scheme 9

1. With vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. Remove the accessory drive belt. For additional information, refer to «ACCESSORY DRIVE»(/ford/explorer-sport-trac/ii-2006-2010/remont/accessory-drive-belts/#accessory-drive-system) article.
3. Disconnect the A/C compressor coil electrical connector.
4. Detach the battery cable retainer from the A/C compressor stud bolts.
5. Remove the nut and detach the A/C tube bracket. To install, tighten to 10 Nm (89 lb-in).
6. Remove the stud bolts and position the A/C compressor aside. To install, tighten to 25 Nm (18 lb-ft).
7. Disconnect the crankshaft position (CKP) sensor electrical connector.
8. Remove the bolt and the CKP sensor. To install, tighten to 10 Nm (89 lb-in).
9. To install, reverse the removal procedure.

Scheme 10

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/explorer-sport-trac/ii-2006-2010/remont/body-electrical/#battery-mounting-and-cables) article.
2. Remove the intake manifold. For additional information, refer to «ENGINE - 4.6L (3V)»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-46l-3v) article.
3. Disconnect the cylinder head temperature (CHT) sensor electrical connector.
4. Remove and discard the CHT sensor. To install, tighten to 26 Nm (19 lb-ft).
5. To install, reverse the removal procedure. Do not reuse the CHT sensor. Install a new sensor.

Scheme 11

1. Drain the cooling system. For additional information, refer to «ENGINE COOLING»(/ford/explorer-sport-trac/ii-2006-2010/remont/cooling-system-mechanical/#engine-cooling-system) article.
2. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
3. Remove the clip and the ECT sensor.
4. To install, reverse the removal procedure.

Fuel Rail Pressure and Temperature Sensor - 4.0L SOHC

Material

Scheme 12

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-general-information) article.
2. Remove the intake manifold. For additional information, refer to «ENGINE - 4.0L SOHC»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-40l-sohc) article.
3. Disconnect the fuel rail pressure and temperature sensor vacuum and electrical connectors.
4. Remove the bolts and the fuel rail pressure and temperature sensor. To install, tighten to 6 N.m (53 lb-in).
5. Remove and discard the O-ring seal.
6. To install, reverse the removal procedure. Lubricate the new O-ring seal with clean engine oil.

Fuel Rail Pressure and Temperature Sensor - 4.6L (3V)

Material

Scheme 13

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-general-information) article.
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/explorer-sport-trac/ii-2006-2010/remont/body-electrical/#battery-mounting-and-cables) article.
3. Disconnect the fuel rail pressure and temperature sensor electrical connector.
4. Disconnect the fuel rail pressure and temperature sensor vacuum hose connector.
5. Remove the 2 bolts and the fuel rail pressure and temperature sensor. To install, tighten to 6 Nm (53 lb-in).
6. To install, reverse the removal procedure. Inspect the O-ring seal and install a new O-ring seal if necessary. Lubricate the O-ring seal with clean engine oil.

Scheme 14

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

Scheme 15

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

Heated Oxygen Sensor (HO2S)

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»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. If the RH heated oxygen sensor (HO2S) is being serviced, remove the bolts and position the heat shield aside. To install, tighten to 20 Nm (15 lb-ft).
3. Disconnect the HO2S electrical connector.
4. Using the special tool, remove the HO2S. To install, tighten to 41 Nm (30 lb-ft).
5. To install, reverse the removal procedure. Apply a light coat of nickel anti-seize lubricant to the threads of the HO2S.

Catalyst Monitor Sensor

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»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. Disconnect the catalyst monitor sensor electrical connector.
3. Using the special tool, remove the catalyst monitor sensor. To install, tighten to 41 Nm (30 lb-ft).
4. To install, reverse the removal procedure. Apply a light coat of anti-seize lubricant to the threads of the catalyst monitor sensor.

Scheme 16

1. Remove the intake manifold. For additional information, refer to «ENGINE - 4.0L SOHC»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-40l-sohc) article.
2. Disconnect the knock sensor (KS) electrical connector.
3. Remove the bolt and the KS. To install, tighten to 20 N.m (15 lb-ft).
4. To install, reverse the removal procedure.

Scheme 17

1. Disconnect the mass air flow (MAF) sensor electrical connector.
2. Remove the bolts and the MAF. To install, tighten to 2 N.m (18 lb-in).
3. To install, reverse the removal procedure.

Scheme 18

1. Disconnect the mass air flow (MAF) sensor electrical connector.
2. Remove the bolts and the MAF sensor. To install, tighten to 2 Nm (18 lb-in).
3. To install, reverse the removal procedure.

Oil Temperature Sensor

Material

Scheme 19

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. Drain the engine oil. Install the drain plug and tighten to 26 Nm (19 lb-ft).
3. Disconnect the oil temperature sensor electrical connector.
4. Remove the oil temperature sensor. To install, tighten to 15 Nm (11 lb-ft).
5. To install, reverse the removal procedure. Inspect the O-ring seal and install a new O-ring seal if necessary. Fill the engine with clean engine oil.

Scheme 20

Scheme 21

All vehicles

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»(/ford/explorer-sport-trac/ii-2006-2010/remont/communication-devices/#module-configuration) article.
2. Remove the air cleaner. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
3. Disconnect the RH front wheel speed sensor electrical connector. Remove the nut(s) and position the A/C tube bracket(s) and wiring harness aside.
4. Disconnect the PCM connectors.
5. Remove the bolts and the PCM.

All vehicles

1. Install the PCM and bolts. Tighten to 10 Nm (89 lb-in).
2. Connect the PCM electrical connectors.
3. Position the wiring harness and the A/C tube bracket(s) and install the nut(s). Connect the RH front wheel speed sensor electrical connector. Tighten to 7 Nm (62 lb-in).
4. Install the air cleaner. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
5. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation procedure. For additional information, refer to «MODULE CONFIGURATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/communication-devices/#module-configuration) article.
6. Reprogram the passive anti-theft system (PATS). Carry out the Parameter Reset procedure. For additional information, refer to «ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS)»(/ford/explorer-sport-trac/ii-2006-2010/remont/door-locks-anti-theft-systems/#anti-theft-system-passive-anti-theft-system-pats) article.

Scheme 22

Scheme 23

Vehicles equipped with a 4.6L (3V) engine

1. Remove the air cleaner (ACL) outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
2. Remove the bolts and position the heated PCV fitting and hoses aside. Remove and discard the O-ring seal.
3. Disconnect the throttle position (TP) sensor electrical connector.
4. Remove and discard the 2 screws and the TP sensor.

All vehicles

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.
3. Install a new O-ring seal, position the heated PCV fitting and install the bolts.
4. Install the ACL outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.

Scheme 24

1. Remove the valve cover. For additional information, refer to «ENGINE - 4.6L (3V)»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-46l-3v) article.
2. Remove the bolt and the variable camshaft timing (VCT) oil control solenoid. To install, tighten to 5 Nm (44 lb-in).
3. To install, reverse the removal procedure.

See also:
• Introduction - Gasoline Engines
• INTAKE AIR DISTRIBUTION AND FILTERING
• ENGINE - 4.6L (3V)
• JACKING AND LIFTING
• ACCESSORY DRIVE
• BATTERY, MOUNTING AND CABLES
• ENGINE COOLING
• FUEL SYSTEM - GENERAL INFORMATION
• ENGINE - 4.0L SOHC
• MODULE CONFIGURATION
• ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS)