1 MAP sensor
2 Fuel pressure sensor
3 Combined IAT sensor and MAF sensor
4 IAT sensor (only with diesel particulate filter system)
5 Fuel temperature sensor
6 ECT sensor
7 CMP sensor
8 CKP sensor
9 Stoplamp switch
10 APP sensor
11 BPP switch
12 DC motor for the EGR valve with an integrated position sensor
13 CPP switch
14 Oil pressure switch
15 Generator (input signal)
16 Start inhibit relay
17 Ignition lock
18 Battery
19 DC motor for intake manifold flap with an integrated position sensor (vehicles with a diesel particulate filter)
20 DC motor for intercooler bypass flap with integrated position sensor (emission standard IV)
21 PCM with an integrated BARO sensor
22 CAN
23 DLC
24 Fuel injectors
25 Boost pressure control solenoid valve
26 Sheathed-type glow plug control module
27 Fuel metering valve
28 Cooling fan control and A/C compressor
29 PCM relay
30 Generator (output signal)
31 Gateway (e.g. instrument cluster or GEM (Generic Electronic Module))
The following components originate from the Bosch company:
โข High-pressure pump (with fuel metering valve),
โข Fuel injectors,
โข PCM.
The high pressure pump generates the fuel pressure required and conveys it into the fuel rail. The fuel metering is carried out through electrical actuation of the solenoid valve-controlled fuel injectors by the PCM.