Chevrolet Impala VIII (1999-2006) message center Wiring diagrams

1 2 3 4 5 6 7 GND IGN VOL 1 BUS + BUS - PNK WIRE 1 2 GROUND PUMP MTR CTRL 20 40 DELIVERED TORQUE REQUESTED TORQUE 3.8L ABS ABS FUSE ABS MTR FUSE ABS SOL FUSE ABS/TCS ABS/TCS YAW RATE SENS REQ TORQUE 5 VOLT REF BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRAKE FLUID PRESSURE SENSOR (W/ ACTIVE HANDLING) BRAKE PRESSURE MODULATOR VALVE (MOUNTED TO LEFT STRUT TOWER) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ELECTRONIC POWER STEERING SYSTEM ENG SPEED SIG GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN OR START IND B+ INSTRUMENT PANEL CLUSTER (IPC) IPC ABS/TCS LEFT FRONT WHEEL SPEED SENSOR (VSS) (ON LEFT FRONT BEARING, HUB ASSEMBLY) LEFT REAR WHEEL SPEED SENSOR (VSS) (ON LEFT REAR BEARING, HUB ASSEMBLY) LOGIC LOGIC ABS/TCS LT BLU WIRE LT GRN WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PCM CLASS 2 PNK PNK WIRE PNK WIRE PPL PUMP MOTOR RED WIRE RIGHT FRONT WHEEL SPEED SENSOR (VSS) (ON RIGHT FRONT BEARING, HUB ASSEMBLY) RIGHT REAR WHEEL SPEED SENSOR (VSS) (ON RIGHT REAR BEARING, HUB ASSEMBLY) STABILITY OFF IND (W/ ACTIVE HANDLING) STEERING ANGLE SENSOR (W/ ACTIVE HANDLING) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH TRACTION STABILITY CONTROL CONTROL ACTIVE ACTIVE TRIP COMPUTER UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) VARIABLE EFFORT VARIABLE EFFORT W/O ACTIVE HANDLING WHT WIRE YEL WIRE

AJAR SWITCH BCM FUSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) CLASS 2 DATA LINE CLASS 2 SERIAL DATA CLSTR/BCM FUSE DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK LK FUSE DOOR AJAR IN ACCY SIG IN DRIVER DOOR AJAR IN KEY SWITCH SIGNAL EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS FRONT PASSENGER DOOR LOCK CYLINDER SWITCH GRY WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ACC, ON OR START HOT IN ON OR START IGNITION LOCK CYLINDER INSTRUMENT PANEL CLUSTER (IPC) KEYLESS ENTRY SERIAL DATA LEFT FRONT DOOR LOCK LEFT FRONT DOOR LOCK CYLINDER SWITCH LEFT FRONT DOOR LOCK SWITCH LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT REAR DOOR LOCK (INSIDE AJAR SWITCH LEFT REAR DOOR) LH HTD ST/BCM FUSE LOCK LOCK UNLOCK LOGIC LT GRN WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR PCM/BCM CLSTR FUSE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL PPL (LEFT SIDE OF DASH) PPL PPL REAR COMPARTMENT LID AJAR SWITCH RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (ON UPPER CENTER OF DASH) RIGHT FRONT DOOR LOCK RIGHT FRONT DOOR LOCK SWITCH RIGHT I/P JUNCTION BLOCK RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT REAR DOOR LOCK SECURITY INDICATOR STOP FUSE UNLOCK W/ SEO WHT WIRE YEL WIRE

AC HEADLAMP RELAY AMBIENT LIGHT SENSOR (TOP RIGHT OF DASH, NEAR DEFOGGER OUTLET) BLK WIRE BLK/WHT WIRE BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE DRL RELAY DRL RELAY SERIAL DATA FOG LP RELAY HIGH BEAM IN HEADLAMP RLY DRL/EXT LTS FUSE EXT LTS FUSE FOG LAMP INDICATOR FOG LAMP SWITCH FOG LIGHT RELAY FOG LP SW PARK BRAKE IN GROUND DISTRIBUTION SYSTEM GRY WIRE HEAD HEADLAMP DIMMER SWITCH HEADLAMP SW AL SENS SIG AL SENS REF 1138 1137 HEADLAMP SWITCH HIGH BEAM HIGH BEAM IND HIGH BEAM OUT HOT AT ALL TIMES IPC CLASS 2 SERIAL DATA LEFT FRONT FOG LAMP LEFT HEADLAMP LEFT I/P JUNCTION LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW BEAM LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER OFF ORG/ WIRE PARK PARK BRAKE SWITCH (AT BASE OF PARKING BRAKE ASSEMBLY) PNK PNK WIRE PNK WIRE PPL RIGHT FRONT FOG LAMP RIGHT HEADLAMP LOW BEAM TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD JUNCTION BLOCK (TOP) UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) UNDERHOOD JUNCTION BLOCK (TOP) FOG RLY FUSE YEL WIRE YEL/BLK WIRE

3.4L 3.8L A/C-CRUISE FUSE ABS IND. AIR BAG IND AMBIENT AIR TEMPERATURE SENSOR (FRONT OF RADIATOR SUPPORT) AMBIENT TEMP SUNROOF CLOSE SUNROOF SW SUNROOF OPEN BATTERY SERIAL DATA BATTERY BRAKE LVL DATA LINE IGNITION WASH LVL GROUND BLK WIRE BLK/WHT WIRE BOOST GAUGE BRAKE IND BRAKE/ BREAKOUT) BRN WIRE BRN/WHT WIRE CHECK (MALFUNCTION INDICATOR LAMP-MIL) COMPUTER DATA LINES SYSTEM CRUISE IND DASH, BEHIND ACCESS PANEL) DIC/ RKE FUSE DISPLAY DK BLU WIRE DRIVER INFORMATION CENTER (DIC) ENGINE COOLANT TEMPER- ATURE GAUGE ENGINE OIL LEVEL SWITCH (OPEN W/ LOW OIL LEVEL) (3.8L) ENGINE OIL PRESSURE GAUGE FUEL GAUGE FUEL PUMP, SENDER ASSEMBLY FUEL LEVEL SENSOR GND RIGHT TURN INPUT GND LEFT TURN INPUT GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN HOT IN RUN OR START IGNITION IGNITION GROUND ILLUMINATION (7 BULBS) INSTRUMENT PANEL CLUSTER INTERNAL COMPASS SENSOR (W/O SUNROOF) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) CLSTR/ BCM FUSE LEFT TURN IND LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER MIL CTRL NCA WIRE ODOMETER/ PRNDL DISPLAY OIL LEVEL SWITCH SIGNAL OIL PRESSURE SWITCH SIGNAL ORG/ WIRE PCM/BCM CLSTR FUSE POWER DISTRIBUTION SYSTEM (PASSENGER COMPT, 10 CM POWER TOPS SYSTEM POWERTRAIN CONTROL MODULE (PCM) PPL PPL FUEL LEVEL SENSOR SIGNAL RED WIRE RESET SWITCH RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT TURN IND RUN WIRE SEAT BELT IND SERVICE ENGINE SOON IND SPEEDO- METER TACHO- METER TAN WIRE TAN/BLK WIRE TRAC OFF IND VF DISPLAY DRIVER VOLT- METER W/O POLICE WHT WIRE WIPER/ WASHER SYSTEM (OR 685) EXTERIOR LIGHTS SYSTEM YEL WIRE

BATTERY BATTERY IGNITION 1 VOLTAGE HEADLAMP SWITCH SIGNAL GROUND BATTERY CLASS 2 SERIAL DATA GROUND GROUND IGNITION 0 VOLTAGE GROUND BCM FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) CLASS 2 SERIAL DATA CLSTR/ BCM FUSE DATA LINK CONNECTOR DK BLU WIRE DOOR OPEN SWITCH- DRIVER DR LK FUSE DRIVER DOOR LOCK DRIVER DOOR LOCK SWITCH GRY WIRE HEADLAMP SWITCH HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ACC, ON OR START HOT IN ON OR START IGNITION KEY ALARM SWITCH (CLOSED W/KEY IN IGNITION SWITCH) IGNITION SWITCH (LEFT SIDE OF DASH) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (BELOW PASSENGER'S SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT SEAT BELT SWITCH LEFT SEAT BELT SWITCH (RIGHT SIDE OF DRIVER'S SEAT) LH HTD ST/BCM FUSE LOGIC LOW TIRE PRESSURE DOOR AJAR LT BLU WIRE LT GRN WIRE MESSAGE CENTER NCA WIRE OFF OPEN AJAR ORG/ WIRE PARK BRAKE SWITCH (AT BASE OF PARKING BRAKE ASSEMBLY) PARK HEAD PARK HEAD OFF PARK LAMP SWITCH PCM/BCM CLSTR FUSE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL (DLC) (BELOW LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) RADIO SEAT BELT IND SERIAL DATA STOP FUSE WHT WIRE YEL WIRE