Mercedes-Benz GLC-class Coupe C254 (2023-2024) top of engine) Wiring diagrams

BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN L CAN-H COMPUTER COMPUTER DATA LINES SYSTEM COOLANT DIRECTIONAL CONTROL VALVE DATA LINES ENGINE MANAGEMENT CONTROL UNIT GRN/WHT WIRE GRN/YEL WIRE GRY/YEL WIRE LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 2 LOW-TEMPERATURE CIRCUIT CIRCULATION PUMP 3 RED WIRE RED/BLK WIRE RED/GRN WIRE SIG SYSTEM TOP OF ENGINE) WHT WIRE

BATTERY SENSOR BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CAN L CAN-H COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT FUSE 24 FUSE 308 FUSE 47 GRN WIRE GRN/WHT WIRE GRY WIRE INSTRUMENT CLUSTER CONTROL UNIT INTEGRATED STARTER ALTERNATOR POWER ELECTRONICS MULTI FUSE 2 N/A NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY PYROFUSE RED WIRE RED/BRN WIRE SIG TOP OF ENGINE) VIO WIRE YEL WIRE

BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE CAN L CAN-H COMPUTER DATA LINES SYSTEM COOLANT PUMP COOLANT THERMOSTAT HEATING ELEMENT ENGINE MANAGEMENT CONTROL UNIT FUSE 100 FUSE 103 FUSE 118 FUSE 121 FUSE 201 GRN/WHT WIRE GRN/YEL WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ HOT W/ TERMINAL LOW-TEMPERATURE CIRCUIT CIRCULATION PUMP 3 RED/GRN WIRE RED/WHT WIRE RELAY ENERGIZED SIG TOP OF ENGINE) WHT WIRE

ACCELERATOR PEDAL SENSOR BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CAN L CAN-H COC COMPUTER DATA LINES SYSTEM DRIVETRAIN CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL ELECTRIC CONTROLLER UNIT FUSE 119 FUSE 122 FUSE 439 GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT 15 RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL UNIT ORG/ WIRE RED/BLK WIRE RED/BLU WIRE RED/PNK WIRE RIGHT REAR SHORT RANGE RADAR SENSOR SIG START/STOP BUTTON THROTTLE VALVE ACTUATOR TOP OF ENGINE) VIO/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

ADDITIONAL BRAKE LAMP BLK WIRE BRN WIRE BRN/WHT WIRE COOLANT PUMP DIAGNOSTIC CONNECTOR DRIVER SEAT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT PNEUMATIC PUMP DRIVER SIDE BAG SQUIB DRIVETRAIN CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT ILLUMINATED DOOR SILL MOLDING INNER LEFT REAR LAMP UNIT INNER RIGHT REAR LAMP UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT FRONT SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT LEFT REAR DOOR CONTROL UNIT ON-BOARD DIAGNOSTICS CONTROL UNIT PANORAMIC SLIDING SUNROOF CONTROL MODULE POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR, RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT RIGHT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON SIGNAL, AMBIENT LAMP TOP OF ENGINE) TRUNK LID/TAILGATE CONTROL SYSTEM CONTROL UNIT TRUNK LID/TAILGATE EXTERNAL OPERATION BUTTON TRUNK LID/TAILGATE LOCK

BLK WIRE BLK/BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CAN L CAN-H DRIVER SEAT CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT FLEX FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER WEIGHT CLASSIFICATION CONTROL UNIT FUEL PUMP CONTROL UNIT GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR NCA WIRE PNK/BLU WIRE PNK/GRY WIRE PNK/WHT WIRE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT TOP OF ENGINE) TRUNK LID/ TAILGATE CONTROL SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE WHT WIRE YEL/BLU WIRE

BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CAN L CAN-H COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE SWITCH ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT ETH N ETH P FLEX FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUEL PUMP CONTROL UNIT FUSE 122 FUSE 200 FUSE 209 FUSE 22 FUSE 223 FUSE 224 FUSE 415 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HEAD UNIT (CENTER OF DASH) HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL UNIT INSTRUMENT CLUSTER DISPLAY INSTRUMENT PANEL MID-RANGE SPEAKER NCA WIRE PNK WIRE PNK/GRY WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/PNK WIRE RED/YEL WIRE SHIELD SIG SIG (+) COC TOP OF ENGINE) UPPER CONTROL PANEL CONTROL UNIT VIO WIRE WAKE-UP WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BATTERY SENSOR BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CAN L CAN-H COC COMPUTER DATA LINES SYSTEM DRIVETRAIN CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE MANAGEMENT CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 24 FUSE 304 FUSE 308 FUSE 42 FUSE 47 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE INSTRUMENT CLUSTER CONTROL UNIT INTEGRATED STARTER ALTERNATOR POWER ELECTRONICS MULTI FUSE 1 N/A NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE PYROFUSE RED WIRE RED/BRN WIRE SIG START/STOP BUTTON TOP OF ENGINE) VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/VIO WIRE CRASH DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 DRIVER SIDE BAG SQUIB ENGINE MANAGEMENT CONTROL UNIT FLEX FRONT PASSENGER ETR (GUS) SQUIB FRONT PASSENGER SIDE BAG SQUIB FUSE 313 GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES PNK/BLU WIRE RED/WHT WIRE RIGHT B-PILLAR ACCELERATION SENSOR RIGHT REAR EMERGENCY TENSIONING RETRACTOR SQUIB STEERING COLUMN MODULE CONTROL UNIT TOP OF ENGINE) VIO WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE CAN L CAN-H COMPUTER DATA LINES SYSTEM ENGINE MANAGEMENT CONTROL UNIT FUSE 10 FUSE 101 FUSE 102 FUSE 103 FUSE 104 FUSE 105 FUSE 122 FUSE 140 GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED HOT W/ RELAY A ENERGIZED INJECTOR 1 (TOP OF ENGINE) INJECTOR 2 (TOP OF ENGINE) INJECTOR 3 (TOP OF ENGINE) INTEGRATED STARTER ALTERNATOR POWER ELECTRONICS PREFUSE BOX PUMP GND RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/PNK WIRE RED/WHT WIRE RED/YEL WIRE SIG SUPPLEMENTAL RESTRAINTS SYSTEM TOP OF ENGINE) VALVE GND VIO WIRE WHT WIRE YEL WIRE