Mercedes-Benz GLA-class X156 facelift (2017-2020) nca Wiring diagrams

AUTOMATIC TRANSMISSION MODE BUTTON AUX BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN C H CAN C L CAN E H CAN E L CLUTCH TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM DIRECT SELECT LEVER DOUBLE CLUTCH DOUBLE CLUTCH TRANSMISSION DRIVE SHAFT RPM SENSOR DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL UNIT DYNAMIC SELECT SWITCH ELECTRIC AUXILIARY OIL PUMP ELECTRONIC IGNITION SWITCH CONTROL UNIT EMS ENGINE COMPARTMENT FUSE, RELAY MODULE ENGINE SPEED SENSOR FUSE 217 FUSE 220 FUSE 32 FUSE 84 GEAR CYLINDER PRESSURE CONTROL VALVE GEAR IND GRN WIRE GRN/WHT WIRE HALL SENSOR 1 HALL SENSOR 2 HALL SENSOR 3 HOT AT ALL TIMES HOT W/ CIRCUIT INSTRUMENT CLUSTER LIN 1 LIN 1 IP M TRANSMISSION MODE BUTTON ME-SFI (ME) CONTROL UNIT MOTOR NCA WIRE ORG/BLU WIRE PARK PAWL CONTROL UNIT CIRCUIT 87 RELAY PARK PAWL LIFT SOLENOID PARK PAWL POSITION SENSOR PARK PAWL SWITCHOVER VALVE PRND RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SAM CONTROL UNIT (LEFT END OF DASH) SHIFT FORK POSITION SENSOR 1 SHIFT FORK POSITION SENSOR 2 SHIFT FORK POSITION SENSOR 3 SHIFT FORK POSITION SENSOR 4 SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL CLOCKSPRING CONTACT STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL ELECTRONICS (IN STEERING WHEEL) STEERING WHEEL UPSHIFT BUTTON SYSTEM PRESSURE CONTROL VALVE TRANSMISSION HOLLOW SHAFT RPM SENSOR TRANSMISSION MODE DISPLAY TRANSMISSION OIL COOLING COOLANT CIRCULATION PUMP UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX W/ DUAL CLUTCH TRANSMISSION YEL WIRE

AMBIANCE ILLUMINATION BLK/VIO WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM GRN WIRE GRN/GRY WIRE GRY/WHT WIRE LEFT FRONT DOOR AMBIANCE ILLUMINATION LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR EXIT, WARNING LAMP LEFT FRONT DOOR HANDLE ILLUMINATION LEFT FRONT DOOR LOCK LEFT FRONT DOOR ROTARY TUMBLER SWITCH LEFT REAR READING LAMP LEFT REAR READING LAMP SWITCH NCA WIRE REAR AMBIENT LAMP REAR DOME LAMP REAR DOME LAMP (W/ READING LAMPS) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR AMBIANCE ILLUMINATION RIGHT FRONT DOOR CONTROL UNIT RIGHT FRONT DOOR EXIT, WARNING LAMP RIGHT FRONT DOOR HANDLE ILLUMINATION RIGHT FRONT DOOR LOCK RIGHT FRONT DOOR ROTARY TUMBLER SWITCH RIGHT REAR READING LAMP RIGHT REAR READING LAMP SWITCH SIG W/ EXTERIOR LIGHT, VISION PACKAGE W/O W/O EXTERIOR LIGHT, VISION PACKAGE W/O INCREASED THEFT PROTECTION W/ INCREASED THEFT PROTECTION WHT WIRE

ACCELERATE, SET SWITCH ACCELERATOR PEDAL SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) BLK/GRN WIRE BLK/YEL WIRE BLS H BLS L BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE CAN C H CAN C L CAN E H CAN E L COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DISTRONIC CONTROL DISTRONIC ELECTRIC CONTROLLER UNIT DISTRONIC WARNING LAMP IND DOWNHILL SPEED REGULATION BUTTON DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 214 FUSE 224 FUSE 32 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ HOT W/ CIRCUIT 15 RELAY ENERGIZED INDICATOR SWITCH INSTRUMENT CLUSTER LEFT FRONT AXLE RPM SENSOR LEFT REAR AXLE RPM SENSOR LIN 1 ME-SFI (ME) CONTROL UNIT MOT- NCA WIRE OFF SWITCH OFFROAD PROGRAM BUTTON ORG/BLU WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RELAY ENERGIZED RESUME FROM MEMORY SWITCH RIGHT FRONT AXLE RPM SENSOR RIGHT REAR AXLE RPM SENSOR SIG STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH THROTTLE VALVE ACTUATOR (ON THROTTLE BODY) UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL/GRY WIRE

ADAPTIVE DAMPING SYSTEM CONTROL UNIT BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FUSE 47 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES LEFT FRONT AXLE DAMPING VALVE UNIT LEFT FRONT BODY LATERAL ACCELERATION SENSOR LEFT REAR AXLE DAMPING VALVE UNIT NCA WIRE REAR BODY ACCELERATION SENSOR RED/YEL WIRE RIGHT FRONT AXLE DAMPING VALVE UNIT RIGHT FRONT BODY LATERAL ACCELERATION SENSOR RIGHT REAR AXLE DAMPING VALVE UNIT SIG SIG (H) SIG (L) VEHICLE INTERIOR FUSE BOX VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE

ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK ANTILOCK BRAKE SYSTEM IND LAMP BLK WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN E H CAN E L COLLISION PREVENTION ASSIST WARNING LAMP COMPUTER DATA COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DISTRONIC WARNING LAMP ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRONIC STABILITY PROGRAM WARNING LAMP ENGINE DIAGNOSIS INDICATOR LAMP ESP/ASR OFF WARNING LAMP FRONT FOG LAMPS INDICATOR LAMP FUEL LEVEL INDICATOR GAUGE FUEL RESERVE INDICATOR LAMP FUSE 73 FUSE 84 FUSE 88 GEAR INDICATOR (PRND) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LEFT TURN SIGNAL IND LAMP LIN 1 LINES SYSTEM LOW BEAM INDICATOR LAMP MULTI-FUNCTION DISPLAY NCA WIRE ORG/BLU WIRE OUTSIDE TEMPERATURE SENSOR PARKING BRAKE INDICATOR LAMP REAR FOG LAMP INDICATOR LAMP RED WIRE RED/BLK WIRE RED/WHT WIRE RETROFIT HEAD-UP DISPLAY RIGHT TURN SIGNAL IND LAMP SAM CONTROL UNIT (LEFT END OF DASH) SEAT BELT WARNING LAMP SIG SPEEDOMETER STANDING LAMPS INDICATOR LAMP SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP SW 1 SW 3 SW 4 SW 6 TACHOMETER TIRE PRESSURE MONITOR WARNING LAMP TRANSMISSION MODE DISPLAY VEHICLE INTERIOR FUSE BOX W/ DISTRONIC PLUS W/ HEAD UP DISPLAY WHT WIRE YEL/BLU WIRE

ATA (EDW) FUNCTION IND AUTOMATIC CHILD SEAT RECOGNITION AIR BAG OFF IND LAMP AUTOMATIC TRANSMISSION MODE BUTTON BLU WIRE BLU/BRN WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM DOWNHILL SPEED REGULATION BUTTON DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEM SWITCH DYNAMIC SELECT SWITCH ECO START/ STOP FUNCTION BUTTON ELECTRIC PARKING BRAKE SWITCH FUEL PRESSURE SENSOR (TOP OF FUEL TANK) FUEL PUMP CONTROL UNIT GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE HAZARD WARNING SYSTEM BUTTON LEFT FRONT HEATED SEAT BUTTON LEFT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR LIN 1 M TRANSMISSION MODE BUTTON NCA WIRE OFFROAD PROGRAM BUTTON ORG/BLU WIRE PARKING SYSTEM BUTTON RED/WHT WIRE RIGHT FRONT BRAKE WEAR SENSOR RIGHT FRONT HEATED SEAT BUTTON RIGHT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR SIG STATIONARY HEATER BUTTON SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT UPPER CONTROL PANEL CONTROL UNIT YEL WIRE

BLK/GRY WIRE BRN WIRE BRN/BLK WIRE BRN/YEL WIRE CAN E H CAN E L COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRIC PARKING BRAKE SWITCH FUSE 73 FUSE 74 FUSE 93 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT ELECTRIC PARKING BRAKE ACTUATOR MOTOR MOTOR NCA WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT ELECTRIC PARKING BRAKE ACTUATOR MOTOR SW 1 SW 3 SW 4 SW 6 VEHICLE INTERIOR FUSE BOX

BLU WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 102 FUSE 202 FUSE 84 GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES LIN 1 MULTI-FUNCTION ANTENNA NCA WIRE ORG/BLU WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE SHD A TEL SHD A TEL TEL SHD A TEL VIP SIG STATIONARY HEATER BUTTON STATIONARY HEATER FUEL PUMP STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER STATIONARY HEATER SWITCHOVER VALVE STATIONARY HEATER UNIT TELEPHONE, STATIONARY HEATER ANTENNA TELEPHONE, STATIONARY METER ANTENNA CHANGEOVER SWITCH UPPER CONTROL PANEL CONTROL UNIT VEHICLE INTERIOR FUSE BOX

BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/WHT WIRE DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 DRIVER BELT FORCE LIMITER FRONT PASSENGER AIR BAG BLEED VALVE SQUIB GRN/YEL WIRE GRY WIRE LEFT ACTIVE ENGINE HOOD SQUIB LEFT FRONT BUMPER PEDESTRIAN PROTECTION SENSOR LEFT REAR DOOR PRESSURE SENSOR NCA WIRE PNK/YEL WIRE RED WIRE RED/BLU WIRE REFRIGERANT INERTING SQUIB RIGHT ACTIVE ENGINE HOOD SQUIB RIGHT FRONT BUMPER PEDESTRIAN PROTECTION SENSOR RIGHT REAR DOOR PRESSURE SENSOR W/ ACTIVE ENGINE HOOD W/O ACTIVE ENGINE HOOD WHT WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLU/BLK WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CENTRAL LOCKING MOTOR COMPUTER DATA LINES SYSTEM DRIVER TRUNK LID/ LIFTGATE CONTROL BUTTON FUEL FILLER/ SOCKET FLAP CENTRAL LOCKING ACTUATOR FUSE 23 FUSE 78 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/PNK WIRE HOT AT ALL TIMES LEFT FRONT DOOR CONTROL UNIT MOT- NCA WIRE ORG/ WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE S SIG SAM CONTROL UNIT (LEFT END OF DASH) SIG TRUNK LID EMERGENCY OPENING SWITCH TRUNK LID RELEASE BUTTON TRUNK LID/ LIFTGATE CONTROL BUTTON TRUNK LID/ LIFTGATE CONTROL ELECTRIC MOTOR TRUNK LID/ LIFTGATE CONTROL HALL SENSOR TRUNK LID/LIFTGATE CENTRAL LOCKING MOTOR TRUNK LID/LIFTGATE CONTROL DRIVE UNIT TRUNK LID/LIFTGATE CONTROL UNIT TRUNK LID/LIFTGATE CONTROL WARNING BUZZER TRUNK LID/LIFTGATE EXTERNAL OPERATION SWITCH TRUNK LID/LIFTGATE LOCKING ELEMENT TRUNK LID/LIFTGATE LOCKING PAWL SWITCH TRUNK LID/LIFTGATE ROTARY TUMBLER SWITCH VEHICLE INTERIOR FUSE BOX VIO WIRE VIO/BRN WIRE VIO/YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE