Mercedes-Benz GLC-class Coupe C254 (2023-2024) front signal acquisition, actuation module control unit Wiring diagrams

AIR CONDITIONING SYSTEM BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS ETH (-) ETH N ETH P FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT GRN WIRE GRY WIRE GRY/BLK WIRE HORNS SYSTEM INSTRUMENT CLUSTER SYSTEM PNK WIRE RED/WHT WIRE SIG VIO WIRE WHT WIRE WIPER/WASHER SYSTEM WIPER/WASHER, HEADLIGHTS SYSTEMS YEL WIRE YEL/BRN WIRE YEL/GRN WIRE

AIR CONDITIONING SYSTEM BLK/WHT WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE CAN L COMPUTER DATA LINES SYSTEM FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS KLA ORG/ WIRE ORG/GRN WIRE ORG/VIO WIRE PNK/RED WIRE RED/BRN WIRE RED/VIO WIRE SIG SIG (+) COC STARTING/CHARGING SYSTEM VIO WIRE VIO/WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/ORG WIRE

AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AIR CONDITIONING, COOLING FANS SYSTEMS ANTI-LOCK BRAKES, INSTRUMENT CLUSTER SYSTEMS BLK WIRE BLU WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE C REL G (-) COMPUTER DATA LINES SYSTEM FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 114 FUSE 129 FUSE 209 GRN/WHT WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM PNK/GRN WIRE PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT RED/BLK WIRE RED/WHT WIRE SEATS SYSTEM SIG SUPPLEMENTAL RESTRAINTS SYSTEM WAKE-UP WHT WIRE WIPER/WASHER SYSTEM YEL/WHT WIRE

BLK WIRE DIAGNOSTIC CONNECTOR DRIVER SEAT CONTROL UNIT DRIVETRAIN CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 200 FUSE 201 FUSE 202 FUSE 203 FUSE 204 FUSE 205 FUSE 206 FUSE 207 FUSE 208 FUSE 209 FUSE 210 FUSE 211 FUSE 212 FUSE 213 FUSE 214 FUSE 215 FUSE 216 FUSE 217 FUSE 218 FUSE 219 FUSE 220 FUSE 221 FUSE 222 FUSE 223 FUSE 224 FUSE 225 FUSE 226 FUSE 227 FUSE 228 FUSE 229 FUSE 230 FUSE 231 FUSE 232 INSTRUMENT CLUSTER CONTROL UNIT INSTRUMENT CLUSTER DISPLAY LEFT FRONT DOOR CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT FRONT SEAT LUMBAR SUPPORT ELECTROPNEUMATIC CONTROLLER UNIT MEDIUM- RANGE RADAR SENSOR N/A N/A N/A NOT USED ON-BOARD DIAGNOSTICS CONTROL UNIT PANORAMIC SLIDING SUNROOF CONTROL MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE STEERING COLUMN MODULE CONTROL UNIT TO PYROFUSE (DIAGRAM 1 OF 9) TOUCHSCREEN UPPER CONTROL PANEL CONTROL UNIT

BACKUP RELAY BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CIRCUIT 50 RELAY COOLANT DIRECTIONAL CONTROL VALVE DRIVETRAIN CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT TERMINAL 15 RELAY ENGINE MANAGEMENT CONTROL UNIT EXHAUST FLAP ACTUATOR MOTOR FAN FANFARE HORN RELAY FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 100 FUSE 106 FUSE 107 FUSE 108 FUSE 109 FUSE 110 FUSE 111 FUSE 113 FUSE 114 FUSE 115 FUSE 116 FUSE 117 FUSE 118 FUSE 119 FUSE 120 FUSE 121 FUSE 122 FUSE 123 FUSE 124 FUSE 127 FUSE 128 FUSE 129 FUSE 136 FUSE 139 FUSE 140 FUSE 141 FUSE 142 FUSE 145 FUSE 147 LEFT FRONT LAMP UNIT LOW TEMPERATURE CIRCUIT CIRCULATION PUMP 2 LOW-TEMPERATURE CIRCUIT CIRCULATION PUMP 3 N/A N/A N/A NOT USED OIL PUMP RELAY ON-BOARD DIAGNOSTICS CONTROL UNIT PNK/BLK WIRE PNK/RED WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/PNK WIRE RED/WHT WIRE RELAY 1 RELAY Q RIGHT FRONT LAMP UNIT WHT WIRE WIPER MOTOR WIPER PARK POSITION HEATER RELAY

22 23 LIN BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE COC DOOR LOCKS SYSTEM DRIVETRAIN CONTROL UNIT ELECTRIC PARKING BRAKE SWITCH ELECTRONIC IGNITION SWITCH CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT GRN WIRE GRN/YEL WIRE GRY/BLU WIRE HOOD CONTACT SWITCH LEFT FRONT DOOR HANDLE LEFT FRONT DOOR LOCK LEFT REAR DOOR HANDLE LEFT REAR DOOR LOCK ORG/ WIRE REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT REAR SWITCHING MODULE RED WIRE RIGHT FRONT DOOR HANDLE RIGHT FRONT DOOR LOCK RIGHT REAR DOOR HANDLE RIGHT REAR DOOR LOCK ROOF ANTENNA MODULE SIG SIG 20 21 START/STOP BUTTON UPPER CONTROL PANEL CONTROL UNIT VIO WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/ORG WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CAN L COMPUTER DATA LINES SYSTEM DRIVETRAIN CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ETH N ETH P FLEX FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL ELECTRIC CONTROLLER UNIT GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HEAD UNIT INSTRUMENT CLUSTER CONTROL UNIT ON-BOARD DIAGNOSTICS CONTROL UNIT PNK WIRE PNK/BLU WIRE PNK/GRY WIRE PNK/RED WIRE PNK/WHT WIRE RED/BLU WIRE RED/BRN WIRE SIG TELEMATICS SERVICES COMMUNICATION MODULE VIO/WHT WIRE WAKE-UP WHT WIRE WHT/BLK WIRE WHT/RED WIRE

BRN WIRE CAN L CAN-H CENTER SEAT BACKREST LOCKING FUNCTION SWITCH COMPUTER DATA LINES SYSTEM FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 209 FUSE 421 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON LEFT REAR BACKREST RELEASE ACTUATOR PNK/BLK WIRE REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RIGHT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON RIGHT REAR BACKREST RELEASE ACTUATOR SIG

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/RED WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/YEL WIRE EXTERIOR LIGHTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 414 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES NAVIGATION SYSTEM REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT RED/GRY WIRE SIG SUPPLEMENTAL RESTRAINTS SYSTEM VIO/GRN WIRE VIO/YEL WIRE WHT/BLU WIRE WHT/GRN WIRE YEL/GRN WIRE

BLK WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE CAN L CAN-H COMPUTER DATA LINES SYSTEM DRIVER SEAT BELT BUCKLE SWITCH DRIVER SEAT POSITION SWITCH ELECTRIC PARKING BRAKE SWITCH ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT FRONT SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT FUSE 111 FUSE 128 FUSE 224 FUSE 318 GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED INSTRUMENT CLUSTER CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT LEFT FRONT DOOR LOCK NCA WIRE ORG/GRN WIRE PNK WIRE PNK/RED WIRE PNK/VIO WIRE PNK/WHT WIRE REAR SIGNAL ACQUISITION, ACTUATION MODULE CONTROL UNIT RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SIG SIG (1) SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE