Honda Civic VII facelift (2003-2006) multiplex control unit Wiring diagrams

+B BACK UP ABS MODULATOR CONTROL UNIT (LEFT SIDE OF ENGINE COMPT) ANTI-THEFT SYSTEM B+ DAY LT HEADLIGHTS LOW FR WIPER PASS ILLUMINATION KEYLESS RECEIVER UNIT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRN/YEL WIRE BUS GROUND CANADA COMMU- NICATION COUPE DX, HX DOOR LOCKS SYSTEM DR DOOR LCK REMOTE IN DR DOOR UNLK REMOTE IN DRL H/L SW IMMOBI CODE DIMMER HIGH EBD ECM/PCM (BEHIND GLOVE BOX) EXTERIOR LIGHTS, CRUISE CONTROL SYSTEMS INTERIOR LIGHTS SYSTEM FR WIPER (INT VOL -) FR WIPER (INT VOL +) KEY SWITCH INPUT FUSE 10 FUSE 8 FUSE 12 FUSE 20 FUSE 16 FUSE 3 FUSE 9 GAUGE ASSEMBLY GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GROUND DR DOOR UNLOCK INPUT DR DOOR LOCK INPUT HEADLIGHTS HIGH HORN SWITCH FUSE 16 (UNDERHOOD) FR WASHER MOTOR HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR HOT IN ON OR HOT IN ON IGNITION KEY LIGHT IGNITION KEY SWITCH IGNITION KEY SWITCH/ KEY LIGHT KEY IN IGNITION LIGHTING RELAY BRAKE LEVEL SWITCH A/C PRESSURE SWITCH LOCK UNLOCK UNLOCK LT GRN/BLK WIRE LT GRN/RED WIRE MIST WIPER INPUT MULTIPLEX CONTROL UNIT MULTIPLEX CONTROL UNIT SERVICE CHECK CONNECTOR ORG/ WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SEFMS PCM IGN 2 DAY LT GROUND SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM HEADLIGHTS SYSTEM SMALL LT RELAY - ATP-P SOUND SYSTEMS STOP LIGHT CEILING LIGHT SUPPLEMENTAL RESTRAINTS SYSTEM UNDER-DASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDER-HOOD FUSE/RELAY BOX (RIGHT SIDE OF ENGINE COMPT) USA W/ ABS W/O ABS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/RED WIRE

ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM BEEPER BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE SWITCH A/C PRESSURE SWITCH HEADLIGHTS LOW B+ DAY LT BRN/YEL WIRE CANADA CANADA USA DOOR LOCKS SYSTEM DR DOOR LCK REMOTE IN DR DOOR UNLK REMOTE IN ECM/PCM (BEHIND GLOVE BOX) EXTERIOR LIGHTS, CRUISE CONTROL SYSTEMS INTERIOR LIGHTS SYSTEM FR WIPER PASS ILLUMINATON KEYLESS RECEIVER UNIT DOOR LOCKS MULTIPLEX BUS FUSE 10 FUSE 8 FUSE 12 FUSE 16 FUSE 20 FUSE 3 FUSE 9 FUSE 9 (UNDERHOOD) GAUGE ASSEMBLY GRN WIRE GRN/RED WIRE GROUND GROUND DR DOOR UNLOCK INPUT DR DOOR LOCK INPUT HEADLIGHTS HIGH HORN RELAY FUSE 16 (UNDERHOOD) FR WASHER MOTOR HORNS SYSTEM HOT AT ALL TIMES HOT IN ON HOT IN ON OR HOT IN ON OR HOT IN ON OR IGNITION KEY LIGHT IGNITION KEY SWITCH/ KEY LIGHT IMMOBILIZER DIMMER HIGH KEY SWITCH INPUT LT GRN/BLK WIRE LT GRN/RED WIRE MIST WIPER INPUT MULTIPLEX BUS MULTIPLEX BUS PCM IGN 2 DAY LT MULTIPLEX CONTROL UNIT MULTIPLEX CONTROL UNIT SERVICE CHECK CONNECTOR ORG/ WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM HEADLIGHTS SYSTEM SMALL LT RELAY TRANSMISSION RANGE SW UNDERDASH FUSE/RELAY BOX UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (RIGHT SIDE OF ENGINE COMPT) USA WARNING SYSTEMS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

+B BACK UP ABS MODULATOR CONTROL UNIT (RIGHT SIDE OF ENGINE COMPT) ANTI-THEFT SYSTEM B+ DAY LT B+ DAY LT H/L LOW FR WIPER (AS) ILLUMINATION + KEYLESS COM BEEPER BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRN/YEL WIRE BUS (ECU) ILU CANADA COMMU- NICATION D/L REMOTE SW (LOCK) D/L REMOTE SW (UNLOCK) D/L SIL-CON SW (LOCK) DIMMER HIGH SMALL LT RLY- ATP-P DOOR LOCKS SYSTEM DOOR LOCKS, ANTI-THEFT, INTERIOR LIGHTS SYSTEMS DRL H/L SW IMMOBI CORD EXTERIOR LIGHTS, CRUISE CONTROL, ANTI-LOCK BRAKES SYSTEMS INTERIOR LIGHTS SYSTEM FR WIPER (INT) IG KEY LT- EBD K/L UNSET K/L SET FR WIPER INT UNIT FR WIPER INT VOL - FR WIPER INT VOL + KEY SW FUSE 12 FUSE 20 FUSE 3 FUSE 8 FUSE 10 FUSE 9 GAUGE ASSEMBLY GND SHIFT LOCK SOL P PIN SW GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GROUND GROUND MPCS CHK H/L HI HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS, ANTI-THEFT SYSTEMS HORN SW +B DOOR LOCK FR WASHER MTR HORNS SYSTEM HOT AT ALL TIMES HOT IN HOT IN ON OR HOT IN ON HOT IN ON OR IGNITION KEY LIGHT IGNITION KEY SWITCH IGNITION KEY SWITCH/ KEY LIGHT (IN STEERING COLUMN COVER) INTERIOR LIGHTS, ANTI-THEFT SYSTEMS KEY LOCK SOL + LIGHTING RLY- BRAKE LEVEL SW LT GRN/BLK WIRE LT GRN/RED WIRE METER MULTIPLEX CONTROL UNIT MULTIPLEX CONTROL UNIT SERVICE CHECK CONNECTOR OR ON ORG/ WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SECURITY CONTROL UNIT CONNECTOR (OPTIONAL) (UNDER LEFT SIDE OF DASH) SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM HEADLIGHTS SYSTEM SOUND SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM WARNING SYSTEM TRANSMISSION CONTROL MODULE (CVT) UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (ON LEFT SIDE OF ENGINE COMPT) FUSE 16 WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/RED WIRE

2 1 TEST TACHOMETER CONNECTOR (LEFT SIDE OF ENGINE COMPT) BLK WIRE BLU WIRE BRAIDED WIRE BRN WIRE BRN/YEL WIRE CARLINK INTERFACE BOX (UNDER MIDDLE OF DASH) DATA LINK CONNECTOR (DLC) (UNDER CENTER OF DASH) DLC ECM (BEHIND GLOVE BOX) EPS CONTROL UNIT (UNDER RIGHT SIDE OF DASH) FUSE 9 GAUGE ASSEMBLY GRY WIRE HOT AT ALL TIMES IMMOBILIZER CONTROL UNIT -RECEIVER (IN STEERING COLUMN COVER) K LINE LT BLU WIRE LT GRN/BLK WIRE MCM (BEHIND GLOVE BOX) MES MES CONNECTOR (UNDER LEFT SIDE OF DASH) MULTIPLEX CONTROL INSPECTION CONNECTOR MULTIPLEX CONTROL UNIT NEP RED/WHT WIRE SCS SHIELD (SULEV) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SRS UNIT (UNDER CENTER OF DASH) TRANSMISSION CONTROL MODULE (TCM) (CVT) (BEHIND RIGHT KICK PANEL) UNDERHOOD FUSE/RELAY BOX (ON LEFT SIDE OF ENGINE COMPARTMENT) VBU WEN WHT/RED WIRE

A/C COMPRESSOR A/C CONDENSER FAN MOTOR (FORWARD OF RADIATOR) A/C CONDENSER FAN RELAY A/C ON A/C PRESSURE SWITCH (BEHIND LEFT SIDE OF A/C CONDENSER FAN MOTOR) ACCESSORY A/C ACS BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE ECM/PCM (BEHIND GLOVE BOX) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR OF ENGINE) EXCEPT GX FACTORY A/C FANC FUSE 1 FUSE 14 FUSE 4 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HEATER CONTROL PANEL HOT AT ALL TIMES HOT IN ON JUNCTION MULTIPLEX CONTROL UNIT RADIATOR FAN MOTOR (BEHIND RADIATOR) RADIATOR FAN RELAY RADIATOR FAN SWITCH (BOTTOM FRONT OF ENGINE COMPT) RED WIRE RED/WHT WIRE SEDAN SEFMJ SENS GND SENS INPUT THERMAL PROTECTOR UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

A/T A/T EXCEPT CVT A/T EXCEPT CVT, CVT BLK WIRE BLK/ORG WIRE BLK/YEL WIRE BLU (OR LT GRN) WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CABLE REEL (ON STEERING COLUMN) CANCEL SWITCH CLUTCH PEDAL POSITION SWITCH (UNDER LEFT SIDE OF DASH) COUPE LX, EX CRUISE CONTROL ACTUATOR (USA HX, SEDAN LX, EX, GX) (RIGHT SIDE OF CRUISE CONTROL MAIN SWITCH CRUISE CONTROL SET/RESUME CANCEL SWITCH CRUISE CONTROL SWITCH LIGHT CRUISE INDICATOR CVT ECM/PCM (BEHIND GLOVE BOX) EXCEPT CVT EXCEPT HX, LX, EX FUSE 10 FUSE 4 FUSE 7 GAUGE ASSEMBLY GRN WIRE GRY WIRE GRY/RED WIRE HORN RELAY HORNS SYSTEM HOT AT ALL TIMES HOT IN ON OR START HX, LX, EX JUNCTION JUNCTION CONNECTOR LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE M/T MULTIPLEX CONTROL UNIT OF ENGINE COMPT) OFF ON INDICATOR ORG/ WIRE PCM (BEHIND GLOVE BOX) PNK WIRE RED WIRE RESUME + SWITCH SECURITY CONTROL UNIT CONNECTOR (OPTIONAL) (UNDER LEFT SIDE OF DASH) SET SWITCH STEERING WHEEL) TRANSMISSION RANGE SWITCH (ON TRANSMISSION HOUSING) UNDER-DASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDER-HOOD FUSE/RELAY BOX (RIGHT SIDE OF ENGINE COMPT) USA HX, SEDAN LX, EX, GX COUPE LX, EX VSS (ON TRANSMISSION HOUSING) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 (CLH) (BRNC) (GND) (IG) (BRNO) (SET) (RES) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLU (OR NCA) WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CABLE REEL CLUTCH PEDAL POSITION SWITCH (UNDER LEFT SIDE OF DASH) CRUISE CONTROL ACTUATOR (RIGHT SIDE OF ENGINE COMPT) CRUISE CONTROL MAIN SWITCH CRUISE CONTROL MAIN SWITCH LIGHT CRUISE CONTROL SET/RESUME CANCEL SWITCH CRUISE CONTROL UNIT (UNDER LEFT SIDE OF DASH) CRUISE INDICATOR FUSE 10 FUSE 4 FUSE 7 GRN WIRE GRN/RED WIRE HORN RELAY HORNS SYSTEM HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER LT BLU WIRE LT GRN (OR NCA) WIRE LT GRN WIRE LT GRN/BLK WIRE MULTIPLEX CONTROL UNIT OFF ON INDICATOR ORG/ WIRE RED WIRE SECURITY CONTROL UNIT CONNECTOR (UNDER LEFT SIDE OF DASH) STEERING WHEEL) UNDERDASH FUSE/RELAY BOX (BEHIND LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (RIGHT SIDE OF ENGINE COMPT) VSS (TRANSMISSION HOUSING) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE

BLK WIRE BLK/ORG WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CABLE REEL CARLINK INTERFACE BOX (UNDER MIDDLE OF DASH) CLIMATE CONTROL UNIT CLUTCH PEDAL POSITION SWITCH (UNDER LEFT SIDE OF DASH) CRUISE CONTROL ACTUATOR (RIGHT SIDE OF ENGINE COMPT) CRUISE CONTROL INDICATOR CRUISE CONTROL MAIN SWITCH CRUISE CONTROL SET/RESUME CANCEL SWITCH CRUISE CONTROL SWITCH LIGHT CRUISE CONTROL UNIT (UNDER LEFT SIDE OF DASH) CVT ECM (BEHIND GLOVE BOX) EPS CONTROL UNIT (UNDER RIGHT SIDE OF DASH) FUSE 10 FUSE 4 FUSE 7 GAUGE ASSEMBLY GRN WIRE GRY WIRE GRY/RED WIRE HORN RELAY HORN SW HORN SWITCH HOT AT ALL TIMES HOT IN ON OR START JUNCTION JUNCTION CONNECTOR LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE M/T MULTIPLEX CONTROL UNIT ON INDICATOR ON OFF ORG/ WIRE RED WIRE RESUME SECURITY CONTROL UNIT CONNECTOR (OPTIONAL) SET- STEERING WHEEL) TCM (BEHIND RIGHT KICK PANEL) TRANSMISSION RANGE SWITCH (ON TRANSAXLE HOUSING) UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (ON LEFT SIDE OF ENGINE COMPT) VSS VSS (ON TRANSAXLE HOUSING) VSS OUT CRUISE CTRL SIG IN ATP FWD WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

+BAT PG AIR CONDITIONING SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/WHT WIRE BOX (UNDER LEFT SIDE OF DASH) BRN WIRE CARLINK INTREFACE BOX (UNDER MIDDLE OF DASH) CLUTCH INTERLOCK SWITCH (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CVT CVT M/T ENGINE CONTROL MODULE (ECM) (BEHIND GLOVE BOX) EPS CONTROL UNIT (UNDER RIGHT SIDE OF DASH) EPS INDICATOR EPS MOTOR (MIDDLE OF ENGINE COMPT) EPS TORQUE SENSOR (REAR CENTER OF ENGINE COMPT) FUSE 10 FUSE 18 GAUGE ASSEMBLY GRN WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START JUNCTION JUNCTION CONNECTOR LT GRN WIRE LT LT M/T MULTIPLEX CONTROL UNIT NEP DIAG-H NEUTRAL POSITION SWITCH (ON TRANSAXLE HOUSING) ORG/ WIRE PNK T/S GND WIRE RED WIRE RED/BLK WIRE T/SIG CVT: ATP NP, M/T: CL SW T/SIG T/S GND PNK WIRE TCM (CVT) (BEHIND RIGHT KICK PANEL) TEST TACHOMETER CONNECTOR (LEFT SIDE OF ENGINE COMPT) TRANSMISSION RANGE SWITCH (ON TRANSAXLE HOUSING) UNDERDASH FUSE/RELAY UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) UNDERHOOD FUSE/RELAY BOX (ON LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE WHT/BLU WIRE WLP VSP SCS SCS YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

18 19 PNK WIRE AIR CONDITIONING SYSTEM ATP D ATP L ATP NP ATP S ATP-R BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/YEL WIRE CVT SPEED SENSOR 2 (ON TRANSAXLE HOUSING) DIMMING CIRCUIT DRIVE CIRCUIT ECT ELECTRONIC POWER STEERING SYSTEM ELECTRONIC POWER STEERING, INSTRUMENT CLUSTER SYSTEMS FUSE 10 GAUGE ASSEMBLY GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/YEL WIRE HOT IN ON OR START IAT LT GRN WIRE LT GRN/RED WIRE MAP (PB) MIL IND MULTIPLEX CONTROL UNIT NEP PNK PNK PNK WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RSCD TPS TRANSMISSION CONTROL MODULE TRANSMISSION RANGE SWITCH (ON TRANSAXLE HOUSING) UNDERDASH FUSE/RELAY BOX (UNDER LEFT SIDE OF DASH) VREF WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE