Volvo 850 I (1991-1997) central electrical unit (left rear of engine compt) Wiring diagrams

8 3 4 ON-BOARD DIAGNOSTIC CONNECTOR A (PARTIAL) (RIGHT FRONT OF ENGINE COMPT) ABS COMBINATION RELAY (LEFT REAR OF ENGINE COMPT) ABS CONTROL MODULE (LEFT REAR OF ENGINE COMPARTMENT) ABS HYDRAULIC UNIT (LEFT FRONT ENGINE COMPT) ABS INDICATOR ABS PEDAL SENSOR (LEFT REAR OF ENGINE COMPARTMENT) BATTERY BLK WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY GROUND CONNECTOR BRAKE FLUID LEVEL SENSOR BRAKE LIGHT SWITCH (BELOW LEFT I/P) BRAKE WARNING INDICATOR BRN WIRE BRN/BLK WIRE BRN/WHT WIRE CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) EARLY PROD EARLY PRODUCTION FUSE 29 FUSE 33 FUSE 9 FUSE 12 FUSE 14 FUSE 27 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HAZARD/ FLASHER RELAY SWITCH HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN RUN IGNITION SWITCH INSTRUMENT CLUSTER LATE PROD LATE PRODUCTION LEFT FRONT ABS SENSOR LEFT REAR ABS SENSOR NCA WIRE OFF OVERLOAD RELAY #2 (IN CENTRAL ELECTRICAL UNIT) PNK WIRE PNK/WHT WIRE POWER GROUND CONNECTOR RED WIRE RED/BLK WIRE RED/WHT WIRE RHEOSTAT (LEFT I/P) RIGHT FRONT ABS SENSOR RIGHT REAR ABS SENSOR STARTING/CHARGING SYSTEM TRACS INDICATOR TRACS SWITCH TWISTED WIRE PAIR TWISTED WIRE PAIRS VIO WIRE VIO/WHT WIRE W/ TRACTION CONTROL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

30-RAIL CONNECTOR ALARM HORN (CENTER REAR OF ENGINE COMPT) ALARM RELAY ALARM WARNING LED ALARM WARNING LED (TOP CENTER OF I/P) AT ATR ATR ATR RH BLK WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE CENTRAL ELECTRICAL UNIT CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CENTRAL LOCKING ANTI-THEFT ALARM REMOTE CONTROL MODULE (RIGHT SIDE OF I/P) CENTRAL LOCKING/ DELAYED INTERIOR LIGHTING RELAY (IN CENTRAL ELECTRICAL UNIT) CRUISE CONTROL SYSTEM DOOR LOCKS SYSTEM ECC SOLAR SENSOR/ ALARM WARNING LED EXTERIOR LIGHTS SYSTEM (TURN- SIGNAL LAMPS) FH AL FUSE 13 FUSE 6 FUSE 15 FUSE 32 FUSE 2 GRN WIRE GRN/RED WIRE GRN/YEL WIRE HOOD ALARM SWITCH (LEFT FRONT OF ENGINE COMPT) HOT AT ALL TIMES IGNITION SWITCH LEFT FRONT DOOR LOCK LEFT REAR DOOR LOCK LICENSE PLATE LIGHT LOCK M/T A/T NCA WIRE PNK WIRE PNK/WHT WIRE POWER GROUND CONNECTOR DOOR LOCKS SYSTEM RED WIRE RIGHT FRONT DOOR LOCK RIGHT REAR DOOR LOCK RUN WIRE SEDAN SERVICE STARTER CONNECTOR (RIGHT FRONT OF ENGINE COMPT) SIGNAL GROUND CONNECTOR SOLID STATE STARTER TAILGATE LOCK TRANSMISSION RANGE SENSOR (ON TRANS- AXLE) TRUNK LIGHT TRUNK LOCK VIO WIRE W/ A/T ONLY W/ ELECTRONIC CLIMATE CONTROL W/O ELECTRONIC CLIMATE CONTROL WAGON WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

1995 EARLY PRODUCTION 2 13 (1995) (1996-97) A/T M/T ALARM RELAY BATTERY BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE LIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) BRAKE PEDAL SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CLUTCH PEDAL SWITCH (ON BRACKET, ABOVE CLUTCH PEDAL) CONNECTOR CRUISE CONTROL MODULE (UNUSED PINS NOT SHOWN) CRUISE CONTROL SWITCH CRUISE CONTROL VACUUM PUMP (LEFT FRONT OF ENGINE COMPT) DEC ENGINE CONTROLS SYSTEM FUSE 12 FUSE 28 GRN/BLK WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN IGNITION SWITCH INSTRUMENT CLUSTER NCA WIRE OFF ON-BOARD DIAGNOSTIC CONNECTOR (1996-97 PARTIAL) (CENTER CONSOLE FORWARD SHIFTER) RED WIRE RED/BLK WIRE RES+ RUN WIRE SIGNAL GROUND CONNECTOR SPEEDOMETER W/ A/T ONLY WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRY WIRE YEL/RED WIRE

2 5 PNK WIRE BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE CENTRAL ELECTRICAL UNIT CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CONNECTOR DDOR MIRROR HEATING ELEMENT DOOR MIRROR HEATING ELEMENT FUSE 11 FUSE 28 GRN WIRE HEATED REAR WINDOW/DOOR MIRRORS RELAY HEATED REAR WINDOW/DOOR MIRRORS SWITCH HOT AT ALL TIMES HOT IN RUN ILLUMINATION LAMP INTERIOR LIGHTS SYSTEM (RHEOSTAT) LEFT FRONT DOOR LOCK LEFT POWER DOOR MIRROR ON INDICATOR POWER GROUND CONNECTOR SIGNAL GROUND CONNECTOR REAR WINDOW HEATING ELEMENT RED WIRE RIGHT FRONT DOOR LOCK RIGHT POWER DOOR MIRROR WAGON SEDAN YEL WIRE YEL/RED WIRE

1995 LATE PRODUCTION, 1996, 1997 1995 EARLY PRODUCTION BATTERY BLK WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CONNECTOR FROM TRUNK LOCK (DIAGRAM 1 OF 2) FUSE 12 FUSE 23 FUSE 24 FUSE 28 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES IGNITION SWITCH INTERIOR LIGHTS (RHEOSTAT) LEFT FRONT PARK/TURN LAMP LEFT SIDE TURN SIGNAL LAMP LICENSE PLATE LIGHT LICENSE PLATE LIGHT (DIAGRAM 1 OF 2) LIGHT SWITCH MAIN HEADLIGHT RELAY/BULB FAILURE WARNING SENSOR NCA WIRE OFF PARK HEAD OFF POWER GROUND CONNECTOR REAR BULB FAILURE WARNING SENSOR (LEFT REAR OF TRUNK/CARGO AREA) RED WIRE RED/WHT WIRE RIGHT FRONT PARK/TURN LAMP RIGHT SIDE TURN SIGNAL LAMP RUN WIRE SHIFT INTERLOCK SYSTEM SPOILER HIGH- MOUNT STOP LAMP HIGH- MOUNT STOP LAMP STOP LIGHT SWITCH (ON BRAKE PEDAL SUPPORT) TRUNK LOCK W/ REAR SPOILER WHT WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

1995 EARLY PRODUCTION 1995 ONLY ANTI-THEFT SYSTEM BACK UP LAMP BACK-UP LAMPS CIRCUIT BLK WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BULB MALFUNCTION INDICATOR CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) FUSE 13 FUSE 27 GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/RED WIRE GRY/WHT WIRE HAZARD FLASHER RELAY/ SWITCH ILLUM- INATION LAMP HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT TAILLIGHT ASSEMBLY LEFT TURN INDICATOR PARK LAMP PNK WIRE POWER GROUND CONNECTOR REAR FOG LAMP REAR FOG LAMP PARK LAMP RED WIRE RED/WHT WIRE RIGHT TAILLIGHT ASSEMBLY RIGHT TURN INDICATOR SOLID STATE STOP LAMP TRAILER INDICATOR TURN SIGNAL LAMP TURN SIGNAL/ HIGH-LOW BEAM SWITCH VIO/WHT WIRE YEL/BRN WIRE YEL/GRY WIRE

1995 LATE PRODUCTION, 1996, 1997 1995 EARLY PRODUCTION BATTERY BLK WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CONNECTOR FUSE 12 FUSE 23 FUSE 24 FUSE 28 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HIGH MOUNT STOP LAMP HOT AT ALL TIMES IGNITION SWITCH INTERIOR LIGHTS (RHEOSTAT) LEFT FRONT PARK/TURN LAMP LEFT SIDE TURN SIGNAL LAMP LICENSE PLATE LIGHT LIGHT SWITCH MAIN HEADLIGHT RELAY/BULB FAILURE WARNING SENSOR OFF PARK HEAD OFF POWER GROUND CONNECTOR REAR BULB FAILURE SENSOR (LEFT REAR OF TRUNK/CARGO AREA) RED WIRE RED/WHT WIRE RIGHT FRONT PARK/TURN LAMP RIGHT SIDE TURN SIGNAL LAMP RUN WIRE SHIFT INTERLOCK SYSTEM STOP LIGHT SWITCH (ON BRAKE PEDAL SUPPORT) WHT WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

1995 EARLY PRODUCTION 1995 ONLY ANTI-THEFT SYSTEM BACK UP LAMP BACK-UP LAMPS CIRCUIT BLK WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BULB MALFUNCTION INDICATOR CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) FUSE 13 FUSE 27 GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/RED WIRE GRY/WHT WIRE HAZARD FLASHER RELAY/ SWITCH ILLUM- INATION LAMP HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT LOWER TAILLIGHT ASSEMBLY LEFT TURN INDICATOR LEFT UPPER TAILLIGHT ASSEMBLY PARK LAMP PNK WIRE POWER GROUND CONNECTOR REAR FOG/ PARK LAMP RED WIRE RED/WHT WIRE RIGHT LOWER TAILLIGHT ASSEMBLY RIGHT TURN INDICATOR RIGHT UPPER TAILLIGHT ASSEMBLY SOLID STATE STOP LAMP TRAILER INDICATOR TURN SIGNAL LAMP TURN SIGNAL/ HIGH-LOW BEAM SWITCH VIO/WHT WIRE YEL/BRN WIRE YEL/GRY WIRE

1/1 1995 EARLY PRODUCTION 1995 EARY PRODUCTION 1996, 1997 2.4L W/ MOTRONIC (4.4 MFI) ENGINE CONTROLS 1997 DIESEL (FRONT OF ENGINE) 31/11 31/15 31/32 31/33 31/4 31/44 31/47 31/50 31/51 31/52 31/55 31/65 31/7 BLK WIRE BLU WIRE BODY GROUND CONNECTOR BRN WIRE CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CONTROL MODULE CONTROL MODULE, PTC RESISTOR PRE-HEATER (TURBO) DI IGNITION DISCHARGE MODULE/ IGNITION COIL ENGINE CONTROL MODULE ENGINE CONTROL MODULE, ON-BOARD DIAGNOSTIC (II) CONNECTOR (1995), ENGINE COOLING FAN FUEL SYSTEM MAIN RELAY, ENGINE CONTROL MODULE, PTC RESISTOR HORN SWITCH ORG BLK WIRE POWER GROUND CONNECTOR RIGHT TAILLIGHT ASSEMBLY(S), TILT SENSOR (SEDAN-1996) SECONDARY AIR PUMP SIGNAL GROUND CONNECTOR

BATTERY BLK WIRE BLU WIRE BLU/WHT WIRE CENTRAL ELECTRICAL UNIT (LEFT REAR OF ENGINE COMPT) CENTRAL ELECTRICAL UNIT (LEFT SIDE OF ENGINE COMPT) EXC USA/ CANADA FUSE 13 FUSE 19 FUSE 20 FUSE 21 FUSE 22 GRN WIRE GRN/RED WIRE GRN/WHT WIRE HEAD HI LO HOT AT ALL TIMES IGNITION SWITCH ILLUMINATION LAMPS INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS SYSTEM (RHEOSTAT) LEFT HEADLIGHT LIGHT SWITCH LOCK MAIN HEADLIGHT RELAY/ BULB FAILURE WARNING SENSOR OFF PARK PNK WIRE REAR BULB FAILURE WARNING SENSOR (LEFT REAR CORNER OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RIGHT HEADLIGHT RUN WIRE SIGNAL GROUND CONNECTOR SOLID STATE TURN SIGNAL/ HIGH-LOW BEAM SWITCH USA CANADA VIO WIRE WHT WIRE YEL WIRE YEL/WHT WIRE