Electronic Engine Controls - 3.0l (4v) Lincoln Zephyr US

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

The electronic engine controls consist of the

1. Powertrain control module (PCM).
2. Engine coolant temperature (ECT) sensor.
3. Camshaft position (CMP) sensor.
4. Crankshaft position (CKP) sensor.
5. Mass airflow (MAF) sensor.
6. Heated oxygen sensor (HO2S).
7. Catalyst monitor sensor.
8. Variable camshaft timing (VCT) oil control solenoid.
9. Knock sensor (KS).
10. Manifold absolute pressure (MAP) sensor.

The PCM

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

The ECT sensor

1. Sends the PCM a signal indicating engine temperature.
2. Resistance decreases as coolant temperature increases.

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

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 variable camshaft timing (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.

The manifold absolute pressure (MAP) sensor

1. Measures manifold vacuum and converts it to an electrical signal. This provides the PCM information on engine load.

Refer to the INTRODUCTION - GASOLINE article.

Camshaft Position (CMP) Sensor

MATERIAL SPECIFICATION

Scheme 2

1. Disconnect the wiring harness and retainer from the RH valve cover stud and position it aside.
2. Remove the nut and the radio frequency interference capacitor from the RH valve cover stud and position it aside. To install, tighten to 6 Nm (53 lb-in).
3. Disconnect the camshaft position sensor (CMP) electrical connector.
4. Remove the bolt and the CMP sensor. To install, tighten to 10 Nm (89 lb-in).
5. To install, reverse the removal procedure.

Crankshaft Position (CKP) Sensor

MATERIAL SPECIFICATION

Scheme 3

Scheme 4

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. If equipped, remove the 7 screws and the underbody cover.
3. Disconnect the crankshaft position (CKP) sensor electrical connector.
4. Remove the bolt and the CKP. To install, tighten to 10 Nm (89 lb-in).
5. To install, reverse the removal procedure.

Scheme 5

Removal

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/zephyr/us-2006-2006/remont/communication-devices/#module-configuration) .
2. Remove the battery tray. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
3. Disconnect the 2 PCM electrical connectors.
4. Remove the 4 bolts and the PCM.

Installation

1. Install the PCM and the bolts. Tighten to 8 Nm (71 lb-in).
2. Connect the 2 PCM electrical connectors.
3. Install the battery tray. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
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/zephyr/us-2006-2006/remont/communication-devices/#module-configuration) .
5. Reprogram the passive anti-theft system (PATS). Carry out the Parameter Reset procedure. For additional information, refer to «ANTI-THEFT - PATS»(/lincoln/zephyr/us-2006-2006/remont/door-locks-anti-theft-systems/#anti-theft-pats) .

Scheme 6

Removal and Installation

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

Scheme 7

Scheme 8

1. Drain the cooling system. For additional information, refer to «ENGINE COOLING»(/lincoln/zephyr/us-2006-2006/remont/cooling-system-mechanical/#engine-cooling) .
2. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
3. Remove the ECT sensor. Pull upward on the locking tab. Rotate the sensor counterclockwise and remove.
4. To install, reverse the removal procedure.

Scheme 9

1. For additional information, refer to the appropriate procedure.

Heated Oxygen Sensor (HO2S)

SPECIAL TOOL(S) DESCRIPTION Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Scheme 10

MATERIAL SPECIFICATION

Scheme 11

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. If equipped, remove the 7 screws and the underbody cover.
3. Disconnect the heated oxygen sensor (HO2S) electrical connector.
4. Using the special tool, remove the HO2S. To install, tighten to 48 Nm (35 lb-ft).
5. To install, reverse the removal procedure.

Catalyst Monitor Sensor

SPECIAL TOOL(S) DESCRIPTION Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

MATERIAL SPECIFICATION

Scheme 12

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. If equipped, remove 7 screws and the underbody cover.
3. Disconnect the catalyst monitor sensor electrical connector.
4. Using the special tool, remove the catalyst monitor sensor. To install, tighten to 48 Nm (35 lb-ft).
5. To install, reverse the removal procedure.

Scheme 13

1. Remove the LH or RH valve cover. For additional information, refer to «ENGINE - 3.0L (4V)»(/lincoln/zephyr/us-2006-2006/remont/mechanical/#engine-30l-4v) .
2. Remove the bolt and the variable camshaft timing (VCT) oil control solenoid. To install, tighten to 10 Nm (89 lb-in).
3. To install, reverse the removal procedure.

Scheme 14

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. If equipped, remove the 7 screws and the underbody cover.
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 15

1. Disconnect the manifold absolute pressure (MAP) sensor electrical connector.
2. Remove the bolt and the MAP sensor. To install, tighten to 6 Nm (53 lb-in). When installing the sensor, if the bolt fails to hold specified torque, relocate the sensor and retain, using the auxiliary bolt hole in the intake manifold.
3. To install, reverse the removal procedure.

See also:
• JACKING & LIFTING
• MODULE CONFIGURATION
• BATTERY, MOUNTING AND CABLES
• ANTI-THEFT - PATS
• ENGINE COOLING
• ENGINE - 3.0L (4V)