Electronic Engine Controls
Electronic Engine Controls
The electronic engine controls consist of the following:
- Camshaft Position (CMP) Sensor
- Catalyst Monitor Sensor (CMS)
- Crankshaft Position (CKP) Sensor
- Cylinder Head Temperature (CHT) Sensor
- Fuel Rail Pressure (FRP) Sensor- 3.5L Gasoline Turbocharged Direct Injection (GTDI)
- Heated Oxygen Sensor (HO2S)
- Intake Air Temperature (IAT) Sensor- 3.5L GTDI (Gasoline Turbocharged Direct Injection)
- Knock Sensor (KS)
- Manifold Absolute Pressure (MAP) /Intake Air Temperature 2 (IAT2) Sensor- 3.5L GTDI (Gasoline Turbocharged Direct Injection)
- Mass Air Flow (MAF) Sensor- 3.7L, 5.0L (4V) and 6.2L (2V)
- PCM
- Turbocharger Boost Pressure (TCBP) /Charge Air Cooler (CAC) Sensor- 3.5L GTDI (Gasoline Turbocharged Direct Injection)
- Variable Camshaft Timing (VCT) Oil Control Valve- 3.5L GTDI (Gasoline Turbocharged Direct Injection) and 3.7L
- VCT (Variable Camshaft Timing) Variable Force Solenoid- 5.0L (4V) and 6.2L (2V)
The CHT (Cylinder Head Temperature) sensor:
- is mounted to the wall of the cylinder head and is not connected to any coolant passages.
- sends the PCM (Powertrain Control Module) a signal indicating cylinder head temperature.
The CKP (Crankshaft Position) sensor:
- is mounted to the wall of the cylinder block.
- sends the PCM (Powertrain Control Module) a signal indicating crankshaft position and engine speed.
The CMP (Camshaft Position) sensor:
- is mounted to the cylinder head.
- sends the PCM (Powertrain Control Module) a signal indicating camshaft position.
The CMS (Catalyst Monitor Sensor) :
- is mounted to the catalytic converter.
- sends the PCM (Powertrain Control Module) a signal indicating oxygen content in the exhaust after the exhaust leaves the catalytic converter.
The FRP (Fuel Rail Pressure) sensor (3.5L GTDI (Gasoline Turbocharged Direct Injection) ):
- is mounted to the fuel rail.
- measures the pressure of the fuel rail and sends these signals to the PCM (Powertrain Control Module).
The HO2S (Heated Oxygen Sensor) :
- is mounted to the exhaust Y-pipe.
- sends the PCM (Powertrain Control Module) a signal indicating oxygen content in the exhaust before the exhaust enters the catalytic converter.
The IAT (Intake Air Temperature) sensor (3.5L GTDI (Gasoline Turbocharged Direct Injection) ):
- is mounted on the Air Cleaner (ACL).
- sends the PCM (Powertrain Control Module) a signal indicating the temperature of the air entering the engine.
The KS (Knock Sensor) :
- is mounted to the wall of the cylinder block.
- sends a signal to the PCM (Powertrain Control Module) indicating engine detonation.
The MAF (Mass Air Flow) sensor:
- is mounted on the ACL (Air Cleaner).
- sends the PCM (Powertrain Control Module) a signal indicating mass airflow rate of air entering the engine.
The MAP (Manifold Absolute Pressure) /IAT2 (Intake Air Temperature 2) Sensor (3.5L GTDI (Gasoline Turbocharged Direct Injection) ):
- is mounted on the top of the intake manifold.
- is a combination sensor.
- measures manifold pressure and converts it to an electrical signal. This provides the PCM (Powertrain Control Module) information on engine load.
- sends the PCM (Powertrain Control Module) a signal indicating the temperature of the air entering the cylinders after passing through the CAC (Charge Air Cooler).
The TCBP (Turbocharger Boost Pressure) /CAC (Charge Air Cooler) Sensor (3.5L GTDI (Gasoline Turbocharged Direct Injection) only):
- is mounted to the CAC (Charge Air Cooler) outlet tube.
- is a combination sensor.
- measures turbocharger boost pressure and sends this information to the PCM (Powertrain Control Module).
- measures the temperature of the charge air exiting the CAC (Charge Air Cooler) and sends this information to the PCM (Powertrain Control Module).
The VCT (Variable Camshaft Timing) Oil Control Valve (3.5L GTDI (Gasoline Turbocharged Direct Injection) and 3.7L only)
- is mounted to the cylinder head.
- is an electronic solenoid that supplies force to actuate the VCT (Variable Camshaft Timing) oil control valve. When the PCM (Powertrain Control Module) transmits a signal based on the engine speed and load, the solenoid moves the VCT (Variable Camshaft Timing) oil control valve activating either the advance circuit, retard circuit or hold position. The camshaft is then repositioned in relation to crankshaft timing to allow for optimum engine performance with lower emissions and reduced fuel consumption.
The VCT (Variable Camshaft Timing) Variable Force Solenoid [5.0L (4V) and 6.2L (2V) only]:
- is mounted to the engine front cover.
- is an electronic solenoid that supplies force to actuate the VCT (Variable Camshaft Timing) oil control valve. The PCM (Powertrain Control Module) transmits a signal based on the engine speed and load, the solenoid will move the VCT (Variable Camshaft Timing) oil control valve activating either the advance circuit, retard circuit or hold position. The camshaft is then repositioned in relation to crankshaft timing to allow for optimum engine performance with lower emissions and reduced fuel consumption.