Electronic Engine Controls
The electronic engine controls consist of the following
- Powertrain control module (PCM)
- Engine coolant temperature (ECT) sensor
- Throttle position (TP) sensor
- Idle air control (IAC) valve
- Camshaft position (CMP) sensor
- Crankshaft position (CKP) sensor
- Mass air flow (MAF) sensor
- Heated oxygen sensor (HO2S)
- Catalyst monitor sensor
The PCM carries out the following functions
- 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.
- outputs a command to the fuel injectors to meter the appropriate quantity of fuel.
The ECT sensor
- sends the PCM a signal indicating engine temperature.
- resistance decreases as coolant temperature increases.
The TP sensor
- sends the PCM a signal indicating the throttle plate angle.
- is the main input to the PCM from the driver.
The IAC valve
- controls bypass air around the throttle plate at low speeds.
- is controlled by the PCM.
The CMP sensor
- sends the PCM a signal indicating camshaft position used for fuel synchronization.
The CKP sensor
- sends the PCM a signal indicating crankshaft position.
- is essential for calculating spark timing.
The MAF sensor
- 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
- creates a voltage signal dependent on exhaust oxygen content.
- provides feedback information to the PCM used to calculate fuel delivery.
The catalyst monitor sensor
- monitors oxygen content after it flows through the catalytic converter.
- provides a voltage to the PCM used to calculate catalytic converter integrity.
INTRODUCTION - GASOLINE article for diagnosis and testing.
Material
| Item | Specification |
|---|---|
| SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (in Canada Motorcraft SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12) or equivalent | WSS-M2C930-A |
MATERIAL SPECIFICATION
Scheme 44
| Item | Specification |
|---|---|
| SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (in Canada Motorcraft SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12) or equivalent | WSS-M2C930-A |
MATERIAL SPECIFICATION
Scheme 45
| Item | Specification |
|---|---|
| High Temperature Nickel Anti-Seize Lubricant XL-2 (in Canada CXG-2) or equivalent | ESE-M12A4-A |
| Penetrating and Lock Lubricant XL-1 |
MATERIAL SPECIFICATION
Scheme 46
Scheme 47
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
- Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-232248) .
- Remove the 7 retainers and the LH splash shield. To install, tighten to 10 Nm (89 lb-in).
- Disconnect the heated oxygen sensor (HO2S) electrical connector.
- Using the special tool, remove the HO2S. To install, tighten to 48 Nm (35 lb-ft).
- To install, reverse the removal procedure.
| Item | Specification |
|---|---|
| High Temperature Nickel Anti-Seize Lubricant XL-2 (in Canada CXG-2) or equivalent | ESE-M12A4-A |
| Penetrating and Lock Lubricant XL-1 |
MATERIAL SPECIFICATION
Scheme 48
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
- Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-232248) .
- Remove the 7 retainers and the LH splash shield. To install, tighten to 10 Nm (89 lb-in).
- Disconnect the catalyst monitor sensor electrical connector and detach the wiring retainer(s).
- Using the special tool, remove the catalyst monitor sensor. To install, tighten to 48 Nm (35 lb-ft).
- To install, reverse the removal procedure.
| Item | Specification |
|---|---|
| SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (in Canada Motorcraft SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12) or equivalent | WSS-M2C930-A |
MATERIAL SPECIFICATION
