Electronic Engine Control System - 2.3L - (Except Hybrid): Other Ford Escape I рестайлинг

Electronic Engine Controls

The electronic engine controls consist of the following

1. Powertrain control module (PCM)
2. Cylinder head temperature (CHT) sensor
3. Throttle position (TP) sensor
4. Idle air control (IAC) valve
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)

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.

The CHT sensor

1. sends the PCM a signal indicating cylinder head temperature.
2. resistance decreases as coolant temperature increases.

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 IAC valve

1. controls bypass air around the throttle plate at low speeds.
2. is controlled by the PCM.

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.

Refer to INTRODUCTION - GASOLINE article for Escape (gasoline) and Mariner or INTRODUCTION- HYBRID ESCAPE article for Escape (Hybrid) article for diagnosis.

Material

CAMSHAFT POSITION SENSOR MATERIAL SPECIFICATION

Scheme 21

MATERIAL SPECIFICATION

Scheme 22

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-232248) .
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.

MATERIAL SPECIFICATION

Scheme 23

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-232248) .
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 24

MATERIAL SPECIFICATION

Scheme 25