Factory-installed Sensors
The sensors integrated into the factory-installed Engine Harness are listed below.
| Sensor Type | Description |
|---|---|
| Camshaft Position (CMP) sensor | Indicates a specific cylinder in the firing order. |
| Crankshaft Position (CKP) sensor | Senses crankshaft position and engine speed for functions such as fuel control strategy. |
| Diesel Particulate Filter (DPF) inlet pressure sensor | Sensor measures pressure between the Diesel Oxidation Catalyst (DOC) and the Diesel Particulate Filter (DPF) in the aftertreatment assembly located in the exhaust system of the vehicle. |
| DPF outlet pressure sensor | Sensor measures pressure on the outlet of the after-treatment device in the exhaust system of the vehicle. Located after the DPF that is within the aftertreatment device. |
| DPF outlet temperature sensor | Temperature measured at the outlet of the after-treatment system that is installed within the exhaust system of the vehicle. Located after the DPF that is within the aftertreatment device. |
| Diesel Oxidation Catalyst (DOC) inlet temperature sensor | Temperature measured at the inlet of the aftertreatment device in the exhaust system of the vehicle. Located before the DOC that is within the aftertreatment device. |
| DOC outlet temperature sensor | Temperature measured between the DOC and the DPF in the aftertreatment assembly located in the exhaust system of the vehicle. |
| Exhaust Gas Recirculation (EGR) Delta Pressure (Delta P) sensor | Senses EGR pressure for EGR control. |
| EGR temperature sensor | Senses EGR exhaust temperature after EGR cooler. Used for EGR system diagnosis. |
| Engine Coolant Temperature (ECT) sensor | Senses coolant temperature for functions such as engine protection, fan control and engine fueling. |
| Engine Oil Pressure (EOP) sensor | Senses gallery oil pressure for functions such as engine protection. |
| Engine Oil Temperature (EOT) sensor | Senses oil temperature for functions such as reducing variation in fuel injection and fan control. |
| Fuel compensation pressure sensor | Compensates fuel line pressure. |
| Fuel rail pressure sensor | Senses high pressure fuel in the fuel rail |
| Intake Manifold Pressure (IMP) sensor | Senses turbocharger boost for functions such as smoke control and engine protection. |
| Intake Manifold Temperature (IMT) sensor | Senses boost temperature. |
| Low pressure fuel sensor | Senses pressure in the low pressure fuel circuit |
| Supply fuel temperature sensor | Senses fuel temperature for functions such as engine fueling. |
| Turbocharger compressor temperature out sensor | Senses turbocharger out air temperature. |
| Turbocharger Speed Sensor (TSS) | Monitors turbocharger speed. |
| Water-in-Fuel (WIF) sensor | Detects water in the fuel filter that alerts the owner/driver that the fuel filter needs to be dried out. |
OEM-installed Sensors
All sensors must be of the proper type and continuously monitor vehicular and environmental conditions, so the MCM can react to changing situations. The OEM is responsible for installing the sensors listed in this table.
| Sensor | Function |
|---|---|
| Ambient Air Temperature (AAT) sensor | Senses ambient air temperature specifically for the ambient air temperature override disable feature or for Optimized Idle (OI). |
| Engine Coolant Level (ECL) sensor | Senses coolant level for engine protection. |
| Turbocharger compressor inlet temperature sensor | Senses the temperature of the turbocharger compressor inlet. |
| Vehicle Speed Sensor (VSS) | Senses vehicle speed for cruise control and vehicle speed limiting. |