Description and principle of operation (Freelander 2)

Pos.	Spare part number	Name
1	-	Manifold Absolute Pressure (MAP) Sensor
2	-	Fuel temperature sensor
3	-	Fuel Rail Pressure Sensor
4	-	Nozzle (4 pcs.)
5	-	Pressure regulating valve
6	-	Fuel pump (including volume control valve)
7	-	Sensor (Engine Coolant Temperature) (ECT)
8	-	(Heated Oxygen Sensor) (HO2S)
9	-	Variable Nozzle Turbocharger (VNT) Controller
10	-	Crankshaft Position (CMP) Sensor
11	-	Glow plugs (4 pcs.)
12	-	Exhaust Gas Recirculation (EGR) Valve
13	-	Sensor (Mass Air Flow) (MAF)/ (Intake Air Temperature) (IAT)
14	-	Oil level and temperature sensor (only in vehicles with diesel particulate filter (DPF))
15	-	Sensor (Engine Oil Pressure) (EOP)
16	-	IAT sensor
17	-	Electronic throttle

NOTE: Left hand drive (LH) shown, right hand drive (RH) similar.

Pos.	Spare part number	Name
1	-	Differential pressure sensor (only vehicles with DPF)
2	-	(engine control module) (ECM)
3	-	Brake light switch
4	-	Sensor (Accelerator Pedal Position) (APP)
5	-	Speed control system lock switch
6	-	Starter lock switch
7	-	Clutch switch
8	-	Lower exhaust gas temperature sensor (only vehicles with DPF)
9	-	(battery junction box) (BJB)
10	-	transmission control module - (TCM) (automatic transmission models only)
11	-	Air conditioning (A/C) compressor
12	-	Cooling Fan Control Module
13	-	Upper temperature sensor (only vehicles with DPF)
14	-	Heated oxygen sensor

The TD4 diesel engine has an Electronic Diesel Control (EDC) system. The system is controlled by the ECM module, which monitors, adapts and precisely controls fuel injection. The ECM uses input signals from various sensors and precisely controls the actuators to ensure optimum dynamic performance under all driving conditions.

The ECM controls fuel delivery to all four cylinders via a common rail fuel injection system. The common rail system uses a fuel rail to collect high-pressure fuel and feed four electronically controlled injectors. The fuel rail is located close to the injectors, which helps maintain full system pressure at each injector at all times.

The ECM uses a drive-by-wire approach to control acceleration. The command is sent from the accelerator pedal to the ECM by two potentiometers located in the throttle position sensor. The ECM uses the two signals to determine the position, rate of movement, and direction of movement of the pedal. The ECM then uses this data, along with other engine information from other sensors, to achieve optimal engine response.

ECM processes the following incoming information:

[Original article on the web portal LRman.ru]