Overview of system components for common rail diesel injection (CDI)

GF07.16-P-9997OGY

Overview of system components for common rail diesel injection (CDI)

02.04.2019

Engine

642.8 in model 253

Show on model 253.9

A1

Instrument cluster

N37/8

NOx sensor control unit downstream of SCR catalytic converter

A1e4

Fuel reserve indicator lamp

N51/3

AIR BODY CONTROL control unit (with code 489 (AIR BODY CONTROL))

A1p13

Multifunction display

N62/1

Radar sensors control unit (with CODE 23P (Driving Assistance package))

A1e58

Engine diagnosis indicator lamp

N69/1

Left front door control unit

A8/1

Transmitter key

N72/4

Left lower control panel

A26/17

Head unit

N72/4s9

ECO start/stop function button

A40/9

Audio/COMAND control panel

N73

Electronic ignition switch control unit

B37

Accelerator pedal sensor

N74

Soot particulate sensor control unit (with code 927 (Emissions standard EU6))

G1

On-board electrical system battery

N74b1

Soot particulate sensor (with code 927 (Emissions standard EU6))

N2/10

Supplemental restraint system control unit

N80

Steering column module control unit

N3/9

CDI control unit

N118

Fuel pump control unit

N10/6

Front SAM control unit

N118/5

AdBlue® control unit

N22/1

Climate control control unit

N127

Drivetrain control unit

N30/4

Electronic Stability Program control unit

X11/4

Diagnostic connector

N37/7

NOx sensor control unit downstream of diesel particulate filter

Y3/8n4

Fully integrated transmission control control unit

View of the engine from above

B2/6

Left hot film mass air flow sensor

B2/6b1

Left intake air temperature sensor

B2/7

Right hot film mass air flow sensor

B2/7b1

Right intake air temperature sensor

B28/11

Pressure sensor downstream of air filter

B60

Exhaust pressure sensor

View of the engine from above

B11/4

Coolant temperature sensor

M55

Intake port shutoff actuator motor

N14/3

Glow output stage

R9/1

Cylinder 1 glow plug

R9/2

Cylinder 2 glow plug

R9/3

Cylinder 3 glow plug

R9/4

Cylinder 4 glow plug

R9/5

Cylinder 5 glow plug

R9/6

Cylinder 6 glow plug

R39/1

Vent line heater element

Engine front view

19

Fuel system high pressure pump

B5/1

Boost pressure sensor

M16/6

Throttle valve actuator

Y85

Exhaust gas recirculation cooler bypass switchover valve

Y130

Engine oil pump valve

Y133

Coolant pump switchover valve

View of engine from rear right

B17/8

Charge air temperature sensor

B19/11

Temperature sensor upstream of turbocharger

M1

Starter

Engine top front view

B4/34

Cylinder 1 combustion chamber pressure sensor

B4/35

Cylinder 2 combustion chamber pressure sensor

B4/36

Cylinder 3 combustion chamber pressure sensor

B4/37

Cylinder 4 combustion chamber pressure sensor

B4/38

Cylinder 5 combustion chamber pressure sensor

B4/39

Cylinder 6 combustion chamber pressure sensor

B6/1

Camshaft Hall sensor

N3/9

CDI control unit

Y27/9

Exhaust gas recirculation actuator

Y77/1

Boost pressure control pressure transducer

View of engine from the left

B1

Engine oil temperature sensor

B28/8

Differential pressure sensor (DPF)

B70

Crankshaft Hall sensor

S43

Oil level check switch

Fuel high-pressure system

B4/6

High-pressure fuel pressure sensor

B50

Fuel temperature sensor

B76/1

Condensation sensor for fuel filter with heating element

Y74

Pressure regulator valve

Y76/1

Cylinder 1 fuel injector

Y76/2

Cylinder 2 fuel injector

Y76/3

Cylinder 3 fuel injector

Y76/4

Cylinder 4 fuel injector

Y76/5

Cylinder 5 fuel injector

Y76/6

Cylinder 6 fuel injector

Y94

Quantity control valve

Exhaust system with code U77 (BlueTEC (SCR) diesel exhaust gas cleaning)

11

Catalytic converter

12

Diesel particulate filter

13

SCR catalytic converter

B16/15

Temperature sensor upstream of SCR catalytic converter

B19/7

Temperature sensor upstream of catalytic converter

B19/9

Temperature sensor upstream of diesel particulate filter

G3/2

Oxygen sensor upstream of catalytic converter

N37/7

NOx sensor control unit downstream of diesel particulate filter

N37/7b1

NOx sensor downstream of diesel particulate filter

N37/8

NOx sensor control unit downstream of SCR catalytic converter

N37/8b1

NOx sensor downstream of SCR catalytic converter

Y129

AdBlue® metering valve

Shown on model 253 (with code U77 (BlueTEC (SCR) diesel exhaust gas cleaning))

33

AdBlue® tank

45

AdBlue® filler neck

A103/1

AdBlue® tank module

A103/1b1

AdBlue® tank temperature sensor

A103/1b5

AdBlue® fill level sensor

A103/1r1

AdBlue® tank heating element

A103/2

AdBlue® delivery module

A103/2m1

AdBlue® delivery pump

A103/2m2

AdBlue® extraction pump

K40/5kV

AdBlue® relay

R7/1

AdBlue® pressure line heating element

Fuel tank

45

AdBlue® filler neck

75

Fuel tank

88

Fuel feed module

B4/1

Fuel tank fuel level indicator fill level sensor, left

B4/2

Fuel tank fuel level indicator fill level sensor, right

M3

Fuel pump (FP)

Integral carrier from the front

Y123

Left switchable engine mount

Y123/1

Right switchable engine mount

Fan from the rear

1

Fan housing

2

Radiator shutters

M4/7

Fan motor

M87

Radiator shutters actuator motor (with code (2U1) Radiator shutters)

Low temperature circuit

10

Transmission oil heat exchanger

14

Low-pressure cooler

15

Expansion reservoir

110/2

Charge air cooler

B10/13

Low-temperature circuit temperature sensor

M43/6

Low temperature circuit circulation pump 1

A

Coolant feed (cold)

B

Coolant return (warm)

C

Coolant adjustment/ventilation

K40/8

Engine fuse and relay module

K40/8kG

Engine compartment terminal 15 relay

K40/8kH

Starter circuit 50 relay

K40/8kN

Circuit 87M relay

Component description for instrument cluster

A1

GF54.30-P-6000RF

Head unit, component description

Model 253 with engine 642.8
with code 520 (Audio 20 USB)
except code 522 (Audio 20 radio)
except code 531 (COMAND APS)
A26/17

GF82.85-P-3140RF

Model 253 with engine 642.8
with code 522 (Audio 20 radio)
except code 520 (Audio 20 USB)
except code 531 (COMAND APS)
A26/17

GF82.85-P-3140RFA

Model 253 with engine 642.8
with code 531 (COMAND APS)
except code 520 (Audio 20 USB)
except code 522 (Audio 20 radio)
A26/17

GF82.85-P-3140RFB

Component description for Audio/COMAND control panel

Engine 642.8 in model 253
up to model year 2020
A40/9

GF54.21-P-4501RF

Supplemental restraint system control unit, component description

N2/10

GF91.60-P-4080RF

Component description for CDI control unit

N3/9

GF07.16-P-6000OGY

Component description for front SAM control unit

N10/6

GF54.21-P-7010RF

Climate control control unit, component description

N22/1

GF83.40-P-2250RF

Component description for Electronic Stability Program control unit

Model 253 (except 253.354/954) with engine 642.8
N30/4

GF42.45-P-5119RF

Component description for NOx sensor control unit

Engine 642.8 in model 253
with code U77 (Diesel Emission control BLUETEC (SCR))
N37/7, N37/8

GF14.40-P-3024OGY

AIR BODY CONTROL control unit, component description

Model 253 with engine 642.8
with code 489 (AIR BODY CONTROL)
N51/3

GF32.22-P-5111RF

Component description for radar sensors control unit

Model 253 with engine 642.8
up to model year 2020
with code 23P (Driving Assistance package)
N62/1

GF30.30-P-3301RF

Component description for left front door control unit

N69/1

GF72.29-P-6001RF

Lower control panel, component description

N72/4

GF54.25-P-4270RF

Component description for the electronic ignition lock control unit

Engine 642.8 in model 253 (except 253.99)
up to model year 2020
N73

GF80.57-P-6001RF

Soot particulate sensor control unit, component description

Engine 642.8 in model 253
with code 927 (EU6 emissions standard)
N74

GF14.40-P-2020OLD

Component description for steering column tube module control unit

Engine 642.8 in model 253 (except 253.99)
up to model year 2020
N80

GF54.21-P-6051RF

Component description for fuel pump control unit

N118

GF47.40-P-2001OLD

Component description for exhaust aftertreatment control unit

N118/5

GF14.40-P-3030OLD

Drivetrain control unit, component description

N127

GF54.21-P-2141OLD

Component description for fully integrated transmission control unit

Transmission 725.0 in model 253 with engine 642.8
Y38n4

GF27.60-P-5165ANI

Table of contents for function description of common rail diesel injection (CDI)

GF07.16-P-0999OGY