Designations and abbreviations on electrical equipment diagrams (Mercedes-Benz C-Class W203)

1	Dashboard.
A1e1	Left turn signal indicator lamp.
A1e2	Right turn signal indicator lamp.
A1e3	High beam indicator lamp.
A1e4	Fuel reserve indicator light.
A1e7	Brake fluid level/parking brake engaged indicator light.
A1e8	Instrument panel lighting.
A1e9	Fasten seat belt indicator light.
A1e15	Airbag warning light (SRS).
A1e17	ABS warning light.
A1e41	ESP warning light.
A1e58	MIL/Check Engine Malfunction Indicator Lamp.
A1h1	Signal buzzer.
A1h2	Sound repeater of direction indicator lights.
A1p2	Fuel level indicator.
A1p5	Tachometer.
A1p8	Electronic speedometer.
A1p12	Indicator of the selected gear.
A1p13	Failure display.
A1r1	Potentiometer for adjusting the intensity of instrument lighting.
A1s3	Button to reset the current mileage meter.
A2	Radio.
A2/6	CD changer (in the glove box).
A2/13	Sound system amplifier.
A2/22	Cellular telephone antenna (CTEL).
A2/22x1	Telephone antenna.
A2/23	Global Positioning System (GPS) antenna.
A2/44	Antenna for monitoring the inflation pressure of the left front wheel.
A2/45	Antenna for monitoring the inflation pressure of the right front wheel.
A2/46	Antenna for monitoring the inflation pressure of the left rear wheel.
A2/47	Antenna for monitoring the inflation pressure of the right rear wheel.
A2/71	Module 1 of the amplifier of the antenna glued to the glass.
A7/3	Hydraulic modulator of auxiliary brake systems.
A7/3m1	Pressure and return pump.
A7/3y6	Left front wheel solenoid valve, pressure holding.
A7/3y7	Left front wheel solenoid valve, pressure relief.
A7/3y8	Right front wheel solenoid valve, pressure holding.
A7/3y9	Right front wheel solenoid valve, pressure relief.
A7/3y10	Left rear wheel solenoid valve, pressure holding.
A7/3y11	Left rear wheel solenoid valve, pressure relief.
A7/3y12	Right rear wheel solenoid valve, pressure holding.
A7/3y13	Right rear wheel solenoid valve, pressure relief.
A7/3y18	Front wheel solenoid valve switch.
A7/3y19	Rear wheel solenoid valve switch.
A7/3y22	Front wheel inlet solenoid valve.
A7/3y23	Rear wheel inlet solenoid valve.
A7/7	Brake Assist (BAS).
A7/7b1	BAS diaphragm stroke sensor.
A7/7s1	BAS reset switch sensor.
A7/7x1	Contact connector of the diaphragm stroke sensor.
A7/7x2	Contact connector of the electromagnetic valve and reset switch sensor.
A7/7y1	BAS electromagnetic valve.
A8/1	Transmitter key.
A9	Compressor K/V (611, 612, control unit N3/9).
A16	Knock sensor (KS).
A16/1	Right knock sensor (KS-1) (112 [except 112.961], control unit N3/10).
A16/2	Left knock sensor (KS-2) (112 [except 112.961], control unit N3/10).
A26/1	Left front IR receiver.
A26/2	Right front IR receiver.
A32	Air circulation unit for the interior heating system.
A32m1	Heater fan.
A32m²	Electric motor of the charcoal adsorber filter adjustment flap.
A32n1	Heater fan controller.
A34	Handset.
A34/4	Cellular Telephone Interface (CTEL [TEL]).
A35	Cellular telephone transceiver (CTEL)/TELE AID emergency call system.
A35/8	TELE AID control unit.
A35/11	Voice control system control unit.
A35/13	Telephone transceiver D2B.
A35/17	D2B transceiver for mobile phone and emergency call system TELE AID.
A40/3	Display and control unit for the operation of the COMAND system.
A42	PTS sensor unit, front bumper.
A42b1	Left outer sensor, front bumper.
A42b2	Left center sensor, front bumper.
A42b3	Left inner sensor, front bumper.
A42b4	Right inner sensor, front bumper.
A42b5	Right center sensor, front bumper.
A42b6	Right outer sensor, front bumper.
A43	PTS sensor unit, rear bumper.
A43b10	Left outer sensor, rear bumper.
A43b7	Right outer sensor, rear bumper.
A43b8	Right inner sensor, rear bumper.
A43b9	Left inner sensor, rear bumper.
A44/3	PTS signal display, rear interior light.
A44/3e1	Reading lamp 1.
A44/3e2	Reading lamp 2.
A44/3e3	Salon lamp.
A44/4	PTS signal display, central part of the instrument panel.
A45	Horn/driver airbag coil contact drum.
A45x1	Airbag coil contact drum (up to 05/02).
A45x2	Spiral contact drum and multi-function steering wheel.
A49x2	Dual-function radio assembly 2.
A53/1	Left side and window airbag sensor.
A54/1	Right side and window airbag sensor.
A59/1	D2B interface for mobile/embedded phone.
A62	Gear Selector Display Sensor.
A62	AT selector position display sensor.
A69/1	Left front wheel inflation pressure sensor.
A69/2	Right front wheel inflation pressure sensor.
A69/3	Left rear wheel inflation pressure sensor.
A69/4	Right rear wheel inflation pressure sensor.

B2/5	Film MAF sensor.
B2/5b1	Intake air temperature (IAT) sensor.
B4/1	Left fuel gauge (271, control unit N3/10).
B4/2	Right fuel gauge (271, control unit N3/10).
B4/3	Fuel tank pressure sensor (111, 112 [except 112.961], 271, control unit N3/10).
B4/6	Line pressure sensor (611, 612, control unit N3/9).
B6/1	Camshaft Hall sensor.
B6/4	Intake camshaft hall sensor (271, control unit N3/10).
B6/5	Exhaust camshaft hall sensor (271, control unit N3/10).
B10/6	Evaporator temperature sensor.
B11/4	Coolant temperature sensor.
B17	Intake air temperature (IAT) sensor.
B18	Altitude sensor (111, 271, control unit N3/10).
B19	Catalytic Converter Temperature Sensor (111, control unit N3/10).
B24/15	Yaw rate and lateral overload sensor.
B25	Telephone handset microphone.
B25/6x1	Sound amplifier microphone connector.
B25x1	Hands-free device microphone connector.
B28	Pressure sensor.
B29	DTR radar sensor.
B31	Multi-function sensor for automatic air conditioning system (C-AAC [K-KLA]).
B31/2	Air humidity sensor.
B32/2	Solar radiation sensor C-AAC (4 pcs.).
B34	ESP brake pressure sensor.
B37	Accelerator pedal position sensor.
B40	Oil level/temperature/quality sensor.
B48	Front seat occupancy/child seat installation sensor.
B52	Clutch speed sensor (716, Sequentronic).
B53	Clutch travel sensor (716, Sequentronic).
B53x1	Clutch travel sensor connector (716, Sequentronic).
B56	Pressure sensor in the automatic switching system (716, Sequentronic).
B56/1	Gear Selection Sensor (716, Sequentronic).

C4	Radio noise suppression capacitor (111, 112 [except 112.961], 271, control unit N3/10).

E1	Left front headlight.
E1e5	Direction indicator lamp.
E2	Right front headlight.
E2e5	Direction indicator lamp.
E3	Left rear light.
E3e1	Direction indicator lamp.
E3e4	Stop signal.
E4	Right rear light.
E4e1	Direction indicator lamp.
E4e4	Stop signal.
E6/5	Direction indicator lamp in the left outside rearview mirror.
E6/6	Direction indicator lamp in the right outside rearview mirror.
E10/1x1	Illumination of the central ventilation deflector.
E12	AT selector position indicator.
E14/4x1	Illumination of the emblem installed on the cover.
E17/3	Left front door entry/exit light.
E17/5	Left rear door entry/exit light.
E18/4	Right luggage compartment light.
E18/5	Left luggage compartment light.
E21	Central high level stop lamp.

f*	Fuse (* - fuse number).
F32	Front box of preliminary fuses.
F32f*	Fuse number * in box F32.
F34	Fuse box in the passenger compartment.
F34f*	Fuse number * in box F34.

G2	Generator.
G3/1	Post-catalytic lambda probe 2 (111, 271).
G3/1x1	Post-catalytic lambda probe connector 2 (111, 271).
G3/2	Pre-catalytic lambda probe 1 (111, 271).
G3/2x1	Pre-catalytic lambda probe connector (111, 271).
G3/3	Left pre-catalytic lambda probe (112 except 112.961).
G3/3x1	Left pre-catalytic lambda probe connector (112 except 112.961).
G3/4	Right pre-catalytic lambda probe (112 except 112.961).
G3/4x1	Right pre-catalytic lambda probe connector 1 (112 except 112.961).
G3/5	Left post-catalytic lambda probe (112 except 112.961).
G3/5x1	Left post-catalytic lambda probe connector (112 except 112.961).
G3/6	Right post-catalytic lambda probe (112 except 112.961).
G3/6x1	Right post-catalytic lambda probe connector (112 except 112.961).

H4/1	Left front door speaker.
H4/2	Right front door loudspeaker.
H4/5	Left rear door speaker.
H4/6	Right rear door speaker.
H4/17	Loudspeaker of the low frequency module.
H4/17x1	1 LF speaker connector.
H4/17x2	2 LF speaker connector.
H4/19x1	Left front 2-winding speaker connector.
H4/23	Loudspeaker for the triangular trim of the left front door exterior mirror.
H4/24	Speaker for the triangular cover of the right front door outside mirror.

kP	Circuit relay 15.
kR	Circuit relay 87.

L5	Crankshaft position sensor (CKP).
L6/1	Left front wheel speed sensor.
L6/2	Right front wheel speed sensor.
L6/3	Left rear wheel speed sensor.
L6/4	Right rear wheel speed sensor.

M1	Starter.
M2/1	Rear heater fan electric motor.
M2/5	Electric motor for driving the air circulation mode switching flap.
M2/6	Electric motor for driving the left shut-off valve.
M2/7	Electric motor for driving the left shut-off valve.
M2/8	Electric motor for the drive of the left air duct for blowing glass.
M2/9	Electric motor for the drive of the right air duct for blowing glass.
M2/10	Electric motor for the air duct flap drive of the left foot well.
M2/11	Electric motor for the right footwell air duct flap drive.
M2/15	Electric motor for driving the foot-level air duct damper.
M2/16	Electric motor for driving the air duct flap for blowing the windshield.
M2/19	Left ventilation duct flap actuator.
M2/20	Right ventilation duct flap actuator.
M2/21	Electric motor for driving the fresh air supply flap.
M3	Fuel pump.
M4/7	Engine with electric suction fan and K/V with built-in control.
M4/12m1	Electric motor 1 fan drive.
M4/12m²	Electric motor 2 fan drive.
M4/27	Additional cooling fan for the radio receiver.
M6/1x1	Windscreen wiper motor.
M10/3	Electric motor for the left front door window lifter.
M10/5	Electric motor for the left rear door window lifter.
M14/5	Electric motor for the actuator of the right front door lock.
M14/6	Electric motor for the actuator of the left front door lock.
M14/7	Electric motor for the trunk lid lock actuator.
M14/8	Electric motor for the actuator of the left rear door lock.
M14/9	Electric motor for the actuator of the right rear door lock.
M14/10	Electric motor for driving the fuel tank filler neck hatch lock actuator.
M16/6	Throttle actuator.
M16/6m1	Throttle actuator electric motor.
M16/6r1	Throttle angle potentiometer.
M16/6r2	Throttle position potentiometer.
M16/6r3	Throttle position potentiometer (sliding contact 1).
M16/6r4	Throttle position potentiometer (sliding contact 2).
M16/7	Air circulation mode flap actuator (111, control unit N3/10).
M16/7m1	Electric motor of the activator (111, control unit N3/10).
M16/7r1	Throttle angle potentiometer (111, control unit N3/10).
M16/7r2	Throttle position potentiometer (111, control unit N3/10).
M16/7r3	Throttle position potentiometer (sliding contact 1) (111, control unit N3/10).
M16/7r4	Throttle position potentiometer (sliding contact 2) (111, control unit N3/10).
M20	A group of electric motors for the steering column adjustment drive.
M20m1	Electric motor for adjusting the steering column position in the longitudinal direction.
M20m²	Electric motor for adjusting the height of the steering column.
M21/1	Electric motor for adjusting the position of the left door rear-view mirror.
M21/1h1	Automatic adjustment system for the reflectivity of the interior rearview mirror.
M21/1m1	Electric motor for adjusting the position of the rear-view mirror in the vertical direction.
M21/1m²	Electric motor for adjusting the position of the rear-view mirror in the horizontal direction.
M21/1m³	Electric motor for folding mirror drive.
M21/1r1	Heating element for rear view mirror.
M21/1x1	Left door mirror connector with electric drive and heating.
M21/2x1	Right door mirror connector with electric drive and heating.
M25	A group of electric motors for adjusting the driver's seat position.
M25m1	Electric motor for seat height adjustment.
M25m²	Electric motor for adjusting the backrest tilt.
M26	A group of electric motors for adjusting the position of the passenger seat.
M26m1	Electric motor for seat height adjustment.
M26m²	Electric motor for adjusting the backrest tilt.
M27	A group of electric motors for adjusting the driver's seat position with memory of the selected position.
M27m1	Electric motor for adjusting the seat position in the longitudinal direction.
M27m²	Electric motor for adjusting the height of the rear edge of the seat cushion.
M27m³	Electric motor for adjusting the height of the front edge of the seat cushion.
M27m4	Electric motor for adjusting the height of the headrest.
M27m5	Electric motor for adjusting the backrest tilt.
M46	Sequentronic Hydraulic Pump [ASG] (716, Sequentronic).
M55	Intake Port Shutoff Drive Electric Motor (611, 612, control unit N3/9).
M56	Brake booster pump.
N₂/7	SRS control unit.
N3/9	Control unit of the diesel fuel injection system (CDI).
N3/10	ME-SFI control unit.
N10/1	Front control unit for perception and activation of SAM signals with fuse and relay box.
N10/2	Rear control unit for perception and activation of SAM signals with fuse and relay box.
N10/2f1	Fuse 1.
N10/2f2	Fuse 2.
N10/2kA	Fuel pump relay block.
N10/2kB	Relay 2, circuit 15R.
N15/3	ETC control unit.
N15/3	Control unit for auxiliary braking systems (ETC) (722.6).
N15/5	AT selector lever control unit.
N15/6	Automatic transmission control unit (716, Sequentronic).
N18	Heater push button control unit.
N18s1	Rear window heating switch.
N₂2	Control unit for push-button automatic air conditioning (AAC).
N₂2/3	Control unit for the rear heater fan electric motor.
N₂2/4	Rotor of the electronic sensor of the rear heater fan.
N₂2/7	Control unit for the push button of the AAC Comfort system.
N₂2/7s1	Rear window heating switch.
N₂2s1	Rear window heating switch.
N₂6/5	Electronic steering wheel lock control unit.
N₂6/9	Special Vehicle Error Block (SVMCM [MSS]).
N₂8/1	Trailer connection fixing system control unit.
N32/1	Control unit for adjusting the driver's seat position with memory of the selected position.
N33/2	Heater Fan Control Unit (611, 612, control unit N3/9).
N47-5	Electronic Stability Program (ESP)/Brake Assist (BAS) control unit.
N49	Steering angle sensor.
N49/1	Speed-sensitive power steering control unit (SPS [PML]).
N62	PTS control unit.
N63/1	DTR control unit.
N65/3	Brake booster vacuum control unit.
N69/1	Left front door control unit.
N69/2	Right front door control unit.
N69/3	Left rear door control unit.
N69/4	Right rear door control unit.
N70	Control unit for ceiling control panel.
N72/1	Upper control panel control unit.
N73	Electronic ignition switch control unit EIS.
N80	Steering column module.
N88	TPM control unit.
N140/2	Preheating system output (611, 612, control unit N3/9).
R3x1	Front cigarette lighter socket.
R4	Spark plugs.
R9	Glow plugs (611, 612, control unit N3/9).
R12/1	Driver's seat belt emergency tensioner (ETR [GUS]) ignition.
R12/2	Passenger seat belt emergency tensioner (ETR [GUS]) ignition.
R12/4	Driver's front airbag ignition 1.
R12/5	Passenger front airbag deflector 2.
R12/6	Left rear seat belt emergency tensioner (ETR [GUS]) ignition.
R12/7	Right rear seat belt emergency tensioner (ETR [GUS]) ignition.
R12/11	Left rear side airbag ignition.
R12/12	Right rear side airbag fuse.
R12/13	Driver's airbag ignition 1.
R12/14	Driver's airbag ignition 2.
R12/20	Left front side airbag fuse.
R12/21	Right front side airbag fuse.
R12/22	Left rear window airbag detonated.
R12/23	Right rear window airbag fuse.
R39/1	Heating element of ventilation line (611, 612, control unit N3/9).
S4	Combination switch.
S4s1	Direction indicator switch.
S4s2	Headlight high beam switch.
S4s4	Windscreen washer system control switch.
S4s5	Windscreen wiper control switch.
S4x1	Combination switch (up to 05/02).
S9/1	4-pin brake light switch sensor.
S10/2	Right front wheel brake pad sensor.
S10/3	Left rear wheel brake pad sensor.
S10/4	Right rear wheel brake pad sensor.
S16/5	Automatic transmission mode switch sensor.
S16/5e1	Illumination of the AT selector lever.
S16/5s1	AT mode switch sensor.
S16/6	Kickdown mode activation switch sensor.
S16/10	Transmission Position Sensor Switch (with voltage coding) (716, Sequentronic).
S17/3	Left front door switch sensor.
S17/4	Right front door switch sensor.
S17/5	Left rear door switch sensor.
S17/6	Right rear door switch sensor.
S17/8	Rotary toggle switch for luggage compartment lid.
S20/1	Driver's door window lift switch group.
S20/1s1	Left front door window lift control switch.
S20/1s2	Right front door window lift control switch.
S20/1s3	Left rear door window lift control switch.
S20/1s4	Right rear door window lift control switch.
S20/1s5	Switch for additional locking of rear door window regulators.
S20/1s6	Trunk lid latch release switch.
S21/2	Right front door window lift control switch.
S21/3	Left rear door window lift control switch.
S22/1	Driver's seat adjustment switch with semi-electric drive.
S23/1	Right front seat position adjustment switch with semi-electric drive.
S40x1	Switch SS (up to 05/02).
S40/3	Clutch pedal switch sensor.
S40/4	Cruise control switch with variable speed limiter.
S40/4s1	Restore the settings saved in memory.
S40/4s2	Deceleration and installation.
S40/4s3	Acceleration and installation.
S40/4s4	Off.
S40/4s5	Control contact.
S40/4s6	Variable speed.
S40/4v1	Yellow LED variable speed limiter.
S40/4x1	Variable speed cruise control switch.
S59	Steering column adjustment switch.
S68/3	Driver's seat belt buckle switch sensor.
S68/4	Right front seat belt buckle switch sensor.
S91/2	Door switch group for electronic adjustment of the left front seat (ESA [ESV]).
S91/2s1	Switch for adjusting the seat position in the longitudinal direction.
S91/2s2	Switch for adjusting the height of the rear edge of the seat cushion.
S91/2s3	Switch for adjusting the height of the front edge of the seat cushion.
S91/2s4	Headrest height adjustment switch.
S91/2s5	Seat back tilt adjustment switch.
S91/2s9	Memory switch.
S91/2s13	Steering column adjustment switch.
S91/2s14	Memory selection switch 1, 2, 3.
S91/3	Driver's seat back release microswitch.
S91/4	Driver's seat height reset microswitch.
S93/2	Switch VCS (SBS) (up to 05/02).
S93/3	SOS push button switch.
S97/1	Steering column adjuster lock indicator switch sensor.
S107	Push button to activate tire inflation pressure control.
S110	Left group of multifunctional steering wheel pushbutton switches.
S110s1	Scroll forward/back pushbutton.
S110s3	System selection button.
S110s5	Horn activation button.
S111	Right group of multifunctional steering wheel pushbutton switches.
S111s1	Push-button switch +/- controls special functions and audio system volume.
S111s3	Telephone call accept/reject button.
S111s5	Horn activation button.
T1/1	Ignition coil of cylinder 1.
T1/2	Ignition coil of the 2nd cylinder.
T1/3	Ignition coil of the 3rd cylinder.
T1/4	Ignition coil of the 4th cylinder.
T1/5	Ignition coil of the 5th cylinder.
T1/6	Ignition coil of the 6th cylinder.
U1	For American models.
U2	Except for American models.
U12	For left-hand drive models.
U13	For right-hand drive models.
U24	For models with manual transmission.
U29	For models with KLA.
U32	For Canadian models.
U57	For models 203.2.
U58	For 203.0 models with 119 engine.
U77	For models with SPS [PML].
U88	For models with radio receiver.
U90	For sound system.
U94	For models equipped with 4-cylinder and 5-cylinder engines.
U144	For folding exterior mirrors.
U145	To remember the position of mirrors.
U150	For engines 112.
U190	For Audio 30 APS.
U196	For Voice Control System (VCS).
U198	For 611 engines.
U199	For 612 engines.
U200	For models with TELE AID system.
U201	For emergency call.
U208	For models 203.7 with 119 engines.
U360	For American and Canadian models.
U390	For AHRA [ALWR] and SPS.
U421	For turbocharged models.
U424	For M271CGI models.
U425	For C32AMG models.
U474	For M271 ME models.
U500	Except for models with audio system.
U52	For Japanese models.
U520	For taxi.
U521	For models with 111 engine.
U525	For engines equipped with compressor.
U527	For models with electronic transmission control (ETC [EGS]).
U533	For models equipped with a towbar.
U541	For models equipped with emergency call system with TELE AID.
U586	For models with CD changer.
U594	For models with built-in phone.
U597	For models with manual transmission.
U607	For minimum D2 bus configuration.
U608	For D2 bus (maximum equipment).
U609	For D2 bus, US preset.
U630	For USA and Canada.
U631	For models equipped with COMAND system.
U637	For models equipped with a CTEL portable cellular telephone.
U644	For models with Walkman connection port.
U649	For government vehicles.
U665	Except for engines with compressor.
U670	For models equipped with reading lamps.
U673	For models equipped with automatic air conditioning (AAC [K-KLA]).
U674	For engines with automatic transmission (Sequentronic).
U681	For models equipped with rear interior light.
U701	The line is not connected.
U703	For pre-installation of a cellular telephone (CTEL).
U732	For E-call with sound system.
U733	For communication unit (Japan).
U739	For engines 271.
U740	For 646 engines.
U791	The electrical contact of the kickdown mode activation switch sensor (S16/6) is not used - the task is performed by means of the phase signal of the accelerator pedal position sensor (B37).
U792	For C270CDI (AMG) models.
U793	Except models with C270CDI (AMG).
U811	For American, Canadian and Australian models.
U812	For Australian models.
W6	Grounding (left wheel arch in the luggage compartment).
W7	Grounding (right wheel arch in the luggage compartment).
W8/1	Grounding (tailgate on the left).
W9	Grounding (left headlight).
W11	Grounding (ground bus connection point on the power unit).
W11/3	Grounding (on the left side of the power unit).
W16/3	Grounding (left component bay ground output).
W16/4	Grounding (right component bay ground output).
W16/5	Electronic grounding (left component bay).
W16/6	Electronic grounding (right component bay).
W18	Grounding (left front seat beam).
W19	Grounding (right front seat beam).
W26	Grounding (sRS control unit).
W28/1	Grounding (left door threshold).
W28/2	Grounding (right door threshold).
W49	Transmission grounding (716, Sequentronic).
W70	ESP grounding.
X1/16	Antenna node connector.
X1/19	AM/FM antenna module connector.
X1/20	Mid-range antenna module connector.
X1/21	Connector of the antenna module of the remote control of the STH radio receiver.
X1/22	Antenna module power connector.
X1/23	TV antenna module connector 1.
X1/24	TV antenna module connector 2.
X1/25	TV antenna module connector 3.
X1/26	TV antenna module connector 4.
X11/4	Diagnostic connector DLC.
X15	Engine fan connector/temperature sensor switch (100°C).
X18/23	Connector between the passenger compartment and the roof.
X18/33	SPS connector [PML].
X18/35	Console and FFS (RBA) system wiring harness connector.
X18/36	Emergency call speaker connector.
X18/37	Emergency call button connector.
X22/17	18-pin Sequentronic connector [ASG] (716, Sequentronic).
X22/18	2-pin Sequentronic connector (716, Sequentronic).
X23/11	E-Call answering antenna.
X25/4	Fuel tank connector (pressure, carbon adsorber).
X25/7	Engine bay/FFS connector [RBA].
X25/9	Carbon adsorber connector.
X26/2	Engine connector (271, control unit N3/10).
X26/22	Console/FFS connector for auxiliary brake systems (Interior/FFS [RBA]).
X26/27	PTS connector, front bumper.
X28/12	Airbag connector.
X28/26	Solar radiation sensor connector.
X29/6	Glove compartment socket.
X30/4	Right CAN voltage distributor connector.
X30/6	CAN console voltage distributor connector.
X30/7	Left CAN voltage distributor connector.
X30/8	Alarm signal connector.
X30/12	Radio receiver mute plug distributor.
X34	Door/Frame Connector (Small) [RBA] (716, Sequentronic).
X34/1	Intermediate connector of the contact sensor-switch of the left front door.
X35/1	Left front door connector.
X35/2	Right front door connector.
X35/3	Left rear door connector.
X35/27	PTS connector, console signal display.
X35/28	PTS connector, rear bumper.
X35/33	Console/FFS (RBA) connector (power supply for emergency alarms).
X35/33	Cabin/Frame System (RBA), Hazard Light Supply.
X35/37	PTS and rear signal element connector.
X35/4	Right rear door connector.
X35/56	Lambda probe connector.
X36/3	Fuel pump wiring connector.
X39/5	Telephone handset transceiver connector.
X39/36	Tape recorder connector.
X39/37	Cellular telephone connector (CTEL).
X39/43	D2B interface fiber optic cable connector.
X39/45	Walkman connector.
X39/47	Cell phone socket (CTEL) on the armrest.
X41	Roof light panel connector.
X41/6	Taximeter connector.
X42/28	ATA-IMS.
X52/5	Additional turn signal indicator connector.
X55/3	Driver's seat contact strip.
X55/4	Right front seat contact strip.
X58	13-pin towbar connector.
X58/3	Microphone jack (government models).
X58/4	Luggage compartment socket.
X60	Intermediate volume control.
X62/6	Electrical connector at right front wheel, main assembly compartment.
X62/7	Electrical connector at left front wheel, main assembly compartment.
X62/8	Electrical connector at the rear axle.
X63/4	2-pin CAN data bus controller connector.
X85/9	Console/Air Conditioner Sensor Connector.
X88/11	2-pin connector for the heating element of the washer fluid supply nozzle.
X88/7	Heating element for the washer fluid supply hose.
X91/1	Tachograph connector.
X120	Fan/Autopilot System (APS) connector.
Y3/6	Electronic Control Unit (ECU) (722.6).
Y3/6b1	ATF temperature sensor AT.
Y3/6n2	Speed sensor 2 AT.
Y3/6n3	Speed sensor 3 AT.
Y3/6s1	Starter interlock contact (722.6).
Y3/6y1	Electromagnetic valve of modulating pressure AT.
Y3/6y2	Electromagnetic valve for controlling automatic transmission shifting.
Y3/6y3	Electromagnetic valve for switching 1-2 and 4-5 AT.
Y3/6y4	Electromagnetic valve for switching 3-4 AT.
Y3/6y5	Electromagnetic valve for switching 2-3 AT.
Y3/6y6	PWM electromagnetic valve for locking up the torque converter AT.
Y10	Solenoid valve SPS [PML].
Y22/6	Intake manifold configuration changeover valve (112 [except 112.961], control unit N3/10).
Y27/9	Left EGR positioner (611, 612, control unit N3/9).
Y31/1	EGR vacuum transducer (112 [except 112.961], control unit N3/10).
Y32	Air pump switch valve.
Y49	Electromagnet for adjusting the valve timing of the camshaft.
Y49/1	Intake camshaft solenoid.
Y49/3	Exhaust camshaft solenoid.
Y58/1	Evaporative canister purge control valve.
Y58/4	Canister shut-off valve.
Y62	Injectors.
Y62y1	Injector 1st cylinder.
Y62y2	Injector 2nd cylinder.
Y62y3	Injector 3rd cylinder.
Y62y4	Injector 4th cylinder.
Y62y5	Injector of the 5th cylinder.
Y62y6	Injector 6th cylinder.
Y74	Pressure regulator valve (diesel engines).
Y75	Electric shut-off valve (diesel engines).
Y76	Injectors (gasoline engines).
Y76	Nozzles (diesel engines).
Y76y1	Injector 1st cylinder (gasoline engines).
Y76y1	Injector 1st cylinder (diesel engines).
Y76y2	Injector 2nd cylinder (gasoline engines).
Y76y2	Injector 2nd cylinder (diesel engines).
Y76y3	Injector 3rd cylinder (gasoline engines).
Y76y3	Injector 3rd cylinder (diesel engines).
Y76y4	Injector 4th cylinder (gasoline engines).
Y76y4	Injector 4th cylinder (diesel engines).
Y76y5	Injector 5th cylinder (diesel engines).
Y90	Clutch electromagnetic valve for automated transmission (716, Sequentronic).
Y91	Clutch electromagnetic valve for automated transmission (716, Sequentronic).
Y92/1	Electromagnetic valve for switching 1, 3, 5 automated gearbox (716, Sequentronic).
Y92/2	Electromagnetic valve for switching R, 2, 4, 6 automated gearbox (716, Sequentronic).
Y100/1	Right boost pressure positioner (611, 612, control unit N3/9).
Z15	Sensor ground connector coupling (611, 612, control unit N3/9).
Z20/1	Shielded cable.
Z20/17	The cable end is not insulated and is placed in an insulating hose.
Z20/3	Insulating tube with internal screen.
Z20/6	Shielded cable.
Z20/7	Shielded cable.
Z20/8	Shielded cable.
Z20/9	Shielded cable.
Z3/29z1	Coupling connector circuit 15 (with fuse) (112 [except 112.961], control unit N3/10).
Z3/31	15R Circuit Connector Coupling (protected by a fuse, side airbag).
Z3/50	Coupling connector circuit 15 AHRA/SPS.
Z36/1	36g coupling for ground connector of rear PTS sensors.
Z36/2	Rear PTS sensor power supply connector coupling.
Z36/3	Front PTS sensor ground connector coupling.
Z36/4	Front PTS sensor power supply connector coupling.
Z4/3	Coupling of circuit connector 30.
Z6	Earth connector coupling (271, control unit N3/10).
Z6/1	Earth connector coupling.
Z6/26	Sensor power supply connector coupling (112 [except 112.961], control unit N3/10).
Z6/27	Sensor ground connector coupling (112 [except 112.961], control unit N3/10).
Z6/30	Earth connector coupling.
Z6/33	Diagnostic cable connector coupling.
Z6/8	Sensor ground connector coupling.
Z7/27	Earthing connector coupling of the circuit (soldered connector of electrical harness) (111, control unit N3/10).
Z7/35	Coupling of the 87M1e circuit connector.
Z7/36	Coupling of the 87M2e circuit connector.
Z7/41	Coupling 1 sensor power connector (271, control unit N3/10).
Z7/43	Sensor ground connector coupling (271, control unit N3/10).
Z7/55	Coupling 2-pin sensor power connector (716, Sequentronic).
Z81	Coupling of the connector of the 58d circuit.
Z85	Lambda probe ground connector coupling.
Z87/17	Coupling 1 of the microphone ground connector.
Z87/18	Coupling 1 of the microphone signal connector.
Z88/1	Left Front Speed Sensor Connector Coupling, FFS (RBA).
Z99/7	Fuel distribution line electromagnetic valve 2 connector coupling (611, 612, control unit N3/9).