Functional diagram

• A Battery
• G6 Fuel system pressurisation pump
• G31 Charge air pressure sender
• G39 Lambda probe
• G42 Intake air temperature sender
• G62 Coolant temperature sender
• G70 Air mass meter
• G81 Fuel temperature sender
• G83 Radiator outlet coolant temperature sender
• G235 Exhaust gas temperature sender 1
• G336 Intake manifold flap potentiometer*
• G450 Exhaust gas pressure sensor 1
• G495 Exhaust gas temperature sender 3
• G581 Position sender for charge pressure positioner
• G648 Exhaust gas temperature sender 4
• J17 Fuel pump relay
• J179 Automatic glow period control unit
• J317 Voltage supply relay
• J519 Onboard supply control unit
• J623 Engine control unit
• N30 Injector, cylinder 1
• N31 Injector, cylinder 2
• N32 Injector, cylinder 3
• N33 Injector, cylinder 4
• N276 Fuel pressure regulating valve
• N290 Fuel metering valve

• Q10 Glow plug 1
• Q11 Glow plug 2
• Q12 Glow plug 3
• Q13 Glow plug 4
• S Fuse
• V157 Intake manifold flap motor*
• V178 Coolant circulation pump 2
• Z19 Lambda probe heater

* No function at present

• F Brake light switch
• G28 Engine speed sender
• G40 Hall sender
• G69 Throttle valve potentiometer
• G79 Accelerator position sender
• G185 Accelerator position sender 2
• G212 Exhaust gas recirculation potentiometer
• G247 Fuel pressure sender
• G476 Clutch position sender
• J338 Throttle valve module
• J623 Engine control unit
• N18 Exhaust gas recirculation valve
• N75 Charge pressure control solenoid valve
• N345 Exhaust gas recirculation cooler change-over valve
• K Diagnostic connection
• S Fuse
• 1 CAN data bus
• 2 CAN data bus