Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015) nca Wiring diagrams
This page contains all the electrical diagrams for the component. nca, in which he is found in the car Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015). You can view various wiring diagrams where this component is used, as well as go to more detailed diagrams to see the complete connection and interaction in the system. All diagrams have links to quickly jump to the corresponding section with the component for easy viewing..
nca wiring diagram (21 of 51)
2 1 31 SIG
3 1 2 LIN 2 31
3 4 W/ POWER GLASS TILTING/SLIDING SUNROOF
5 1 2 4 30 CAN-B L CAN-B H 31
AMBIENT LAMP
AUTOMATIC
BLK WIRE
BLU WIRE
BRN WIRE
BRN/GRY WIRE
BRN/RED WIRE
COMPASS DISPLAY BUTTON
COMPASS MODULE W/ DISPLAY (IF EQUIPPED)
COMPUTER DATA LINES SYSTEM
DIMMING MIRROR
FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR
FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT)
FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT)
FUSE
FUSE 2
GARAGE DOOR OPENER
GARAGE DOOR OPENER BUTTON 1
GARAGE DOOR OPENER INDICATOR LAMP
GARAGE GARAGE DOOR DOOR OPENER OPENER BUTTON 2 BUTTON 3
GRN WIRE
GRY WIRE
GRY/RED WIRE
GRY/YEL WIRE
HANDSFREE SYSTEM MICROPHONE
HOT AT ALL TIMES
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED
INSIDE REARVIEW MIRROR
LEFT FRONT DOOR CONTROL UNIT
LEFT OUTSIDE MIRROR
LEFT READING LAMP
LIGHT SENSOR (W/O RAIN/LIGHT SENSOR)
LIN 2 31
NAVIGATION, SOUND SYSTEMS
NCA WIRE
ORG/ WIRE
PNK WIRE
REARWARD AUTOMATIC AUTOMATIC DIMMING DIMMING MIRROR MIRROR LIGHT SENSOR
RED/BLU WIRE
RED/WHT WIRE
RIGHT READING LAMP
USED)
YEL WIRE
Go to component -> Automatic day/night mirror circuit -> NCA WIRE
nca wiring diagram (22 of 51)
1 2 3 4 5 6 31 CAN G H CAN G L 15
1 2 3 4 5 6 31 CAN G H CAN G L 15 31 31
3 6 LED LED
4 5 2 1 31 30 CAN-B H CAN-B L
BLK WIRE
BLU RED/ WIRE
BRN WIRE
BRN/RED WIRE
CAN-B H CAN-B L
COMPUTER DATA LINES SYSTEM
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED FUSE 41
LED 31
NCA WIRE
PNK WIRE
PNK/WHT WIRE
RED/BLU WIRE
RED/GRY WIRE
RED/WHT WIRE
RIGHT BLIND 3 2 1 SPOT ASSIST READINESS, WARRING INDICATOR (IF EQUIPPED)
RIGHT OUTSIDE MIRROR
WHT PNK/ WIRE
Go to component -> Blind spot information system circuit -> NCA WIRE
nca wiring diagram (23 of 51)
ANT GPS SHIELD
BLK WIRE
BLU/BLK WIRE
BLU/BRN WIRE
BLU/GRN WIRE
BLU/GRY WIRE
BLU/PNK WIRE
BLU/VIO WIRE
BRN WIRE
CAN D H CAN D L
CENTER INSTRUMENT PANEL SPEAKER
COMAND CONTROL UNIT (W/ COMAND)
COMPUTER DATA LINES SYSTEM
DIAGNOSTIC CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH)
EMERGENCY CALL SYSTEM ANTENNA (CENTER OF HAT SHELF)
EMERGENCY CALL SYSTEM BUTTON
EMERGENCY CALL SYSTEM CONTROL UNIT (CENTER FRONT TRUNK/CARGO AREA)
FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT)
FUSE 87
GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER (RIGHT FRONT OF TRUNK/ CARGO AREA)
GPS
GRY WIRE
GRY/BLU WIRE
GRY/WHT WIRE
HOT AT ALL TIMES
INFO
MB-INFO, BREAKDOWN ASSISTANCE BUTTON
MIKR + MIKR - (-)
MULTI-FUNCTION ANTENNA (CENTER REAR OF ROOF)
MUTE
NCA WIRE
OVERHEAD CONTROL PANEL ELECTRONICS (W/O CAN) OVERHEAD CONTROL PANEL CONTROL UNIT
RADIO (W/ AUDIO 20)
REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA)
RED/BLU WIRE
SHIELD SIG ANT NOT SHIELD 1 2
SOS LED WS LED INFO LED SOS WS INFO CRASH
SOUND SYSTEM AMPLIFIER CONTROL UNIT (LEFT SIDE TRUNK/ CARGO AREA)
SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE)
TEL
TELEDIAGNOSIS
W/ NAVIGATION
W/ SOUND SYSTEM
W/O NAVIGATION
W/O SOUND SYSTEM
YEL WIRE
YEL/BLK WIRE
YEL/RED WIRE
YEL/VIO WIRE
Go to component -> Emergency call circuit -> NCA WIRE
nca wiring diagram (24 of 51)
2 1 4 3 10 9 5 31 SIG SH (+) SH (-) 31 (+) LED 31
2 1 5 4 CAN B H CAN B L 30 31
4 5 3 6 33 33 LED LED
6 3 LED LED
9 10 3 4 (+) 31 SH (-) SH (+)
BLK WIRE
BRN WIRE
BRN/PNK WIRE
BRN/RED WIRE
COMPUTER DATA LINES SYSTEM
DRIVER-SIDE POWER WINDOW, OUTSIDE MIRROR ADJUSTMENT SWITCH GROUP
FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT)
FUSE
FUSE 41
HOT AT ALL TIMES
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED
LED 31
LEFT BLIND SPOT ASSIST READINESS, WARNING INDICATOR
LEFT FRONT POWER WINDOW SWITCH
LEFT OUTSIDE MIRROR
LEFT OUTSIDE MIRROR ADJUSTMENT SWITCH
LEFT OUTSIDE MIRROR TURN SIGNAL LAMP
LEFT REAR POWER WINDOW SWITCH
MIRROR HEATER
NCA WIRE
OUTSIDE MIRROR ADJUSTMENT SWITCH
OUTSIDE MIRROR FOLD-IN/ FOLD-OUT SWITCH
PNK WIRE
REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF
REAR SIDE WINDOW CHILD SAFETY LOCK SWITCH
RED/BLK WIRE
RED/GRY WIRE
RED/WHT WIRE
RIGHT FRONT POWER WINDOW SWITCH
RIGHT OUTSIDE MIRROR
RIGHT OUTSIDE MIRROR ADJUSTMENT SWITCH
RIGHT OUTSIDE MIRROR TURN SIGNAL LAMP
RIGHT REAR POWER WINDOW SWITCH
TRUNK/CARGO AREA)
Go to component -> Fold-back mirrors circuit -> NCA WIRE
nca wiring diagram (25 of 51)
2 7 8 31 (+) (+)
30 31 CAN-B H CAN-B L
BLK/GRY WIRE
BLK/VIO WIRE
BLOCK
BLU WIRE
BLU/WHT WIRE
BRN WIRE
BRN/RED WIRE
CAN C H
CAN C L
COMPUTER DATA LINES SYSTEM
DRIVER SEAT CONNECTOR BLOCK
FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT)
FRONT PASSENGER SEAT CONNECTOR
FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT)
FUSE 163 158
FUSE 18
GRY/YEL WIRE
HOT AT ALL TIMES
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED
LEFT FRONT BACKREST HEATED CUSHION (IF EQUIPPED)
LEFT FRONT HEATED SEAT BUTTON
LEFT FRONT SEAT SITTING SURFACE HEATED CUSHION (IF EQUIPPED)
LIN 1 31
NCA WIRE
REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF
RED WIRE
RED/GRN WIRE
RIGHT FRONT BACKREST HEATED CUSHION (IF EQUIPPED)
RIGHT FRONT HEATED SEAT BUTTON
RIGHT FRONT SEAT SITTING SURFACE HEATED CUSHION (IF EQUIPPED)
STATIONARY HEATER BUTTON
TRUNK/CARGO AREA)
UPPER CONTROL PANEL CONTROL UNIT
W/ ECO START/ STOP FUNCTION
W/O ECO START/ STOP FUNCTION
Go to component -> Heated seats circuit -> NCA WIRE
nca wiring diagram (26 of 51)
1 2 3 4 5 6 7 8 9 10 ANT GND ANT GND DATA GND DATA GND
1 2 3 4 5 6 7 8 9 10 ANT GND ANT GND SIG (-) SIG (-)
1 2 3 4 5 6 7 8 9 10 CAN B-L CAN B-H
17 18 12 13 CAN B L CAN B H CAN E L CAN E H
30 31 CAN-B H CAN-B L
ANT SHIELD
BLK WIRE
BLK/WHT WIRE
BLU WIRE
BLU/BRN WIRE
BRN WIRE
BRN/GRN WIRE
BRN/PNK WIRE
BRN/RED WIRE
BRN/WHT WIRE
BRN/YEL WIRE
C-CLASS COUPE
C-CLASS SEDAN, C-CLASS GLK- COUPE CLASS
C-CLASS SEDAN, GLK- CLASS
COMPUTER DATA LINES SYSTEM
FUSE
FUSE SIG
GO ANTENNA AMPLIFIER (CENTER REAR OF ROOF)
GRN WIRE
GRN/WHT WIRE
GRY WIRE
GRY/WHT WIRE
HOT W/ ADDITIONAL BATTERY RELAY ENERGIZED
INSTRUMENT CLUSTER
KEYLESS GO CONTROL UNIT (RIGHT SIDE OF TRUNK/CARGO AREA)
LEFT REAR KEYLESS GO GO DOOR HANDLE
MULTI-FUNCTION DISPLAY
NCA WIRE
REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA)
RED WIRE
RIGHT FRONT KEYLESS GO DOOR HANDLE
RIGHT REAR DOOR KEYLESS GO ANTENNA (IN RIGHT REAR DOOR)
RIGHT REAR KEYLESS GO DOOR HANDLE
TAILGATE KEYLESS GO BUTTON
W/O ECO START/STOP FUNCTION
WHT WIRE
YEL WIRE
Go to component -> Keyless go system circuit -> NCA WIRE
nca wiring diagram (27 of 51)
1 2 3 4 5 6 7 8 9 10 11 12 31 CAN A L
1 2 3 4 LVDS - RES LVDS + GND
ANT FM/TMC ANTENNA SPLITTER
BLK WIRE
BLK/WHT WIRE
BLU WIRE
BLU/RED WIRE
BRN WIRE
C-CLASS GLK-CLASS
CAN A H
COMPUTER DATA LINES SYSTEM
CRADLE NAVIGATION MODULE
FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR ENGINE COMPT)
FUSE 11
GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER (RIGHT FRONT OF TRUNK/CARGO AREA)
GRN WIRE
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED
NAVIGATION MODULE
NCA WIRE
ORG/ WIRE
RADIO
REAR WINDOW ANTENNA FM ANTENNA AMPLIFIER (BASE OF LEFT "C" PILLAR)
SHIELD
SHIELD GPS 2 FM
SHIELD TMC
TMC
VOICE + SHIELD MIC +
WHT WIRE
Go to component -> Navigation circuit -> NCA WIRE
nca wiring diagram (28 of 51)
BLK/RED WIRE
BLK/WHT WIRE
BLK/YEL WIRE
BLU WIRE
BRN WIRE
CIRCUIT 15 RELAY
DVD PLAYER (IF EQUIPPED) LEFT REAR DISPLAY, RIGHT REAR DISPLAY
EMERGENCY CALL SYSTEM CONTROL UNIT (IF EQUIPPED)
FROM FUSE 41 (DIAGRAM
FROM FUSE 46 (DIAGRAM
FROM FUSE 47 (DIAGRAM 1 OF 5)
FROM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE
FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION (W/ SMOKER PACKAGE)
FRONT VEHICLE INTERIOR POWER OUTLET (W/O SMOKER PACKAGE)
FUEL PUMP CONTROL UNIT
FUEL PUMP RELAY FUSE
FUSE
FUSE 37
FUSE 38
FUSE 39
FUSE 41
FUSE 54
FUSE 59
FUSE 71
FUSE 83
FUSE 84
FUSE 86
FUSE 87
FUSE FUSE
GRY WIRE
LEFT REAR DOOR CONTROL UNIT
NCA WIRE
PNK PNK WIRE
PNK WIRE
REAR BLOWER MOTOR
RED WIRE
RED/BLK WIRE
RED/BLU WIRE
RED/GRN WIRE
RED/GRY WIRE
RED/VIO WIRE
RED/WHT WIRE
RED/YEL WIRE
RELAY 1
RES+
RIGHT FRONT DOOR CONTROL UNIT
SEAT ADJUSTMENT RELAY
TAILGATE WINDSHIELD WIPER RELAY
TO FUSE 42 (DIAGRAM 2 OF 5)
TO FUSE 74 (DIAGRAM
TO FUSE 85 (DIAGRAM
TRAILER RECOGNITION CONTROL UNIT (W/ TRAILER HITCH)
W/O W/ SMOKER SMOKER PACKAGE PACKAGE
YEL WIRE
Go to component -> Power distribution circuit (2 of 5) -> NCA WIRE
nca wiring diagram (29 of 51)
AUDIO COMAND CONTROL PANEL
BACKUP RELAY
BLK/BLU WIRE
BLU/RED WIRE
BRN WIRE
CIRCUIT
CIRCUIT 15 RELAY
ELECTRONIC SELECTOR LEVEL MODULE CONTROL UNIT
ENGINE CIRCUIT 87 RELAY
FANFARE HORN RELAY
FROM
FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 5)
FROM FUSE 15 (DIAGRAM
FUSE
FUSE 21
FUSE 29 FUSE 30
FUSE 8 FUSE 10
FUSE 9
FUSE FUSE
FUSE FUSE 16
GLOVE BOX LAMP/ SWITCH
GLOVE BOX SOCKET (IF EQUIPPED)
INSTRUMENT PANEL SWITCH GROUP
LEFT FRONT LAMP UNIT
MOBILE PHONE ELECTRICAL CONNECTOR (IF EQUIPPED),
MULTI-FUNCTION CAMERA
NCA WIRE
OIL COOLER FAN MOTOR RELAY
PNK/BLK WIRE
PNK/BLU WIRE
PNK/GRN WIRE
PNK/WHT WIRE
PNK/YEL WIRE
RED WIRE
RED/BLU WIRE
RED/BRN WIRE
RED/GRN WIRE
RED/GRY WIRE
RED/VIO WIRE
RED/WHT WIRE
RED/YEL WIRE
RIGHT FRONT LAMP UNIT
SECONDARY AIR INJECTION RELAY
SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT
TO CHASSIS CIRCUIT 87 RELAY (DIAGRAM
TO ENGINE CIRCUIT 87 RELAY (DIAGRAM
TO FUSE 1 (DIAGRAM
TO FUSE 14 (DIAGRAM
TO FUSE 17 (DIAGRAM
TO FUSE 6 (DIAGRAM
UPPER CONTROL PANEL CONTROL UNIT
WIPER MOTOR
WIPER PARK HEATER (IF EQUIPPED)
Go to component -> Power distribution circuit (4 of 5) -> NCA WIRE
nca wiring diagram (30 of 51)
BRN WIRE
FUSE
GRN/RED WIRE
GRN/YEL WIRE
GRY/YEL WIRE
HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED
LEFT FRONT BACKREST SEAT VENTILATION MOTORS
LEFT FRONT SEAT CUSHION SEAT VENTILATION MOTORS
LEFT FRONT SEAT VENTILATION BLOWER REGULATOR
LEFT FRONT SEAT VENTILATION BUTTON
LIN 1
NCA WIRE
REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA)
RED/BLU WIRE
RED/GRN WIRE
RED/GRY WIRE
RED/YEL WIRE
RIGHT FRONT BACKREST SEAT VENTILATION MOTORS
RIGHT FRONT SEAT CUSHION SEAT VENTILATION MOTORS
RIGHT FRONT SEAT VENTILATION BLOWER REGULATOR
RIGHT FRONT SEAT VENTILATION BUTTON
UPPER CONTROL PANEL CONTROL UNIT
Go to component -> Seat ventilation circuit -> NCA WIRE
