Oldsmobile Alero I (1999-2004) lt blu Wiring diagrams

5 VOLT REF A/C A/C BFC FUSE 37 A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C ON A/C REFRIGERANT PRESSURE SENSOR (FRONT OF ENG COMPT) A/C REQUEST A/C REQUEST OUTPUT REAR DEFOG AIR TEMPERATURE ACTUATOR (RIGHT SIDE OF HVAC ASSEMBLY) BATTERY VOLTAGE BI- LVL HEAT BLK WIRE BLK/WHT WIRE BLOWER HVAC RELAY BLOWER MOTOR BLOWER MOTOR RESISTOR ASSEMBLY (BELOW RIGHT SIDE OF DASH) BLOWER SWITCH BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) A/C REQUEST INPUT BRN WIRE COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE 8 COOL FAN 1 RELAY COOL FAN 2 FUSE 52 COOL FAN MODE RELAY COOL FAN 2 RELAY COOLING FAN (LEFT) COOLING FAN (RIGHT) DEF HEAT/ DEF DEF ON DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR CTRL INPUT ECT SENSOR HIGH SPEED FAN CONTROL ENGINE COOLANT TEMPERATURE (ECT) SENSOR (RIGHT REAR OF ENGINE) GROUND GRY WIRE HEATER COMMAND OUTPUT HI BLO MOT FUSE 53 HIGH OFF LOW HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START HTR-A/C FUSE 46 HVAC BLOWER FUSE D HVAC CONTROL ASSEMBLY IGN IGN 3 VOLTAGE MODE REQUEST ILLUM IPC/HVAC BATT FUSE L LH I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LOW REF LOW SPEED FAN CONTROL LT BLU WIRE LT GRN WIRE MAX VENT MODE SWITCH ORG/ WIRE OSA OSA ON REC ON OSA REQUEST REC REQUEST PARK LAMP SUPPLY A/C DISABLE POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) A/C PRESS SIG LOW REF PPL REC RED/BLK WIRE RH I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) SERIAL DATA CLASS 2 SERIAL DATA CLASS 2 LH I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) SPLICE PACK SPLICE PACK SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (IN LEFT SIDE OF ENGINE COMPARTMENT, ON STRUT TOWER) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) WHT WIRE YEL WIRE

5 VOLT REF A/C A/C BFC FUSE 37 A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C ON A/C REFRIGERANT PRESSURE SENSOR (FRONT OF ENG COMPT) A/C REQUEST A/C REQUEST OUTPUT REAR DEFOG AIR TEMPERATURE ACTUATOR (RIGHT SIDE OF HVAC ASSEMBLY) BATTERY VOLTAGE BI- LVL HEAT BLK WIRE BLK/WHT WIRE BLOWER HVAC RELAY BLOWER MOTOR BLOWER MOTOR RESISTOR ASSEMBLY (BELOW RIGHT SIDE OF DASH) BLOWER SWITCH BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) A/C REQUEST INPUT BRN WIRE COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE 8 COOL FAN 1 RELAY COOL FAN 2 FUSE 52 COOL FAN 2 GROUND FUSE 55 COOL FAN MODE RELAY COOL FAN 2 RELAY COOLING FAN (LEFT) COOLING FAN (RIGHT) DEF HEAT/ DEF DEF ON DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR CTRL INPUT ECT SENSOR HIGH SPEED FAN CONTROL ENGINE CONTROLS SYSTEM GROUND GRY WIRE HEATER COMMAND OUTPUT HI BLO MOT FUSE 53 HIGH OFF LOW HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START HTR-A/C FUSE 46 HVAC BLOWER FUSE D HVAC CONTROL ASSEMBLY IGN IGN 3 VOLTAGE MODE REQUEST ILLUM IPC/HVAC BATT FUSE L LH I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LOW REF LOW SPEED FAN CONTROL LT BLU WIRE LT GRN WIRE MAX VENT MODE SWITCH ORG/ WIRE ORG/BLK WIRE OSA OSA ON REC ON OSA REQUEST REC REQUEST PARK LAMP SUPPLY A/C DISABLE POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) A/C PRESS SIG LOW REF PPL REC RED/BLK WIRE RH I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) SERIAL DATA CLASS 2 SERIAL DATA CLASS 2 LH I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) SPLICE PACK SPLICE PACK SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (IN LEFT SIDE OF ENGINE COMPARTMENT, ON STRUT TOWER) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) WHT WIRE YEL WIRE

15 58 (2.4L) (3.4L) 2.4L 2.4L 3.4L 3.4L ABS FUSE 4 ABS IND. ABS/EVO/IGN FUSE 40 BATTERY BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE PRESSURE MODULATOR VALVE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR (DLC) (BELOW DASH, LEFT OF STEERING COLUMN) DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (INSIDE LEFT FRONT FENDER) ELECTRONIC POWER STEERING SYSTEM GROUND GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT PANEL CLUSTER IPC/HVAC BATT FUSE L LEFT FRONT WHEEL SPEED SENSOR LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR LOW REF VAR EFF STR ACT CNTL VAR EFF STR ACT SUPP LOW TRAC IND LT BLU WIRE NCA WIRE OLDSMOBILE ORG/ WIRE ORG/BLK WIRE PNK WIRE PONTIAC POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) PPL PPL PPL PPL PPL PPL PPL SERIAL DATA TRAC CNTL SW PUMP MOTOR RED WIRE RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR SERIAL DATA SPLICE PACK SPLICE SPLICE STOP LAMP SWITCH (BELOW LEFT SIDE OF DASH) STOP LPS FUSE J TAN WIRE TRAC OFF IND TRACTION CONTROL SWITCH TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (IN LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) WHT WIRE YEL WIRE

15 58 (4-CYL) (6-CYL) CLASS 2 SERIAL DATA A/C BFC FUSE 37 BFC BATTERY FUSE F BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BELOW RIGHT SIDE OF DASH) DATA DRIVER DOOR LOCK SWITCH FUSE I HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC, ON OR START HOT IN ON, START IGNITION LOCK CYLINDER INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM IPC/BFC LEFT FRONT DOOR JAMB SWITCH LEFT FRONT DOOR LOCK SWITCH LEFT I/P FUSE BLOCK LEFT I/P FUSE BLOCK (ON LEFT SIDE OF DASH) LEFT REAR DOOR AJAR SWITCH LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT LT ORG/ WIRE PASSENGER FRONT DOOR LOCK SWITCH PASSLOCK SENSOR (PART OF IGNITION SWITCH) PNK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) PPL PPL CLASS 2 SERIAL DATA PPL DATA LINK CONNECTOR (BELOW LEFT SIDE OF DASH) PPL PPL PPL/ PPL/ PPL/ PPL/ REAR COMPARTMENT LID RELEASE SWITCH REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (ON REAR PACKAGE SHELF) RIGHT FRONT DOOR JAMB SWITCH RIGHT FRONT DOOR LOCK SWITCH RIGHT I/P FUSE BLOCK RIGHT REAR DOOR AJAR SWITCH SECURITY INDICATOR SPLICE PACK TRUNK RELEASE RELAY UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

A/C BFC FUSE 37 A/C SYSTEM AMBIENT LIGHT SENSOR (TOP OF DASH TRIM PAD) ANTI-THEFT SYSTEM BFC BATT FUSE F BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM ANTI-THEFT SYSTEM COOLANT LEVEL SWITCH (RIGHT SIDE OF ENGINE COMPT) CRUISE CONTROL SYSTEM CRUISE FUSE E DK BLU WIRE DK GRN/WHT WIRE DOOR LOCK CTRL DOOR LOCK LOCK/UNLOCK SIG DRL AMBIENT LIGHT SEN LOW REF DOOR LOCKS SYSTEM DRIVER LOCK RELAY UNLOCK DRL RLY CTRL FRONT FOG LAMP SW SIG TRACTION CONTROL SW SIG WINDSHIELD WASHER FLUID LEVEL GRY/BLK WIRE HEADLAMP BEAM-LOW HEADLAMP LOW BEAM RLY CTRL FOG LAMP RLY CTRL PARK LAMP SW SIG HORN RLY CTRL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM ANTI-LOCK BRAKE SYSTEM HEADLIGHTS SYSTEM ANTI-THEFT SYSTEM TRUNK RELEASE SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC, ON OR START HOT IN ON OR START HOT IN RUN INT LPS FUSE G INTERIOR LIGHTS SYSTEM WARNING SYSTEM WARNING SYSTEM IPC/BFC ACC FUSE I LEFT FRONT DOOR AJAR SW SIG BATTERY POSITIVE VOLTAGE LEFT I/P FUSE BLOCK LOW COOLANT LEVEL IND CTRL A/C REQUEST SIG LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE OIL/ TIRE RESET SWITCH OLDSMOBILE ORG/ WIRE PARK BRAKE SWITCH PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION CENTER PPL PPL IGNITION 0 VOLTAGE PARK LAMP RLY CTRL RIGHT I/P FUSE BLOCK SECURITY SYST SENSOR SIG SPLICE PACK TRUNK RELEASE RLY CTRL TRUNK RELEASE SYSTEM UNDERHOOD FUSE BLOCK WASHER FLUID LEVEL SENSOR (INSIDE LEFT FRONT FENDER) WHT WIRE YEL WIRE YEL/BLK WIRE

A/T ALERO ONLY BLK WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLUTCH PEDAL POSITION SWITCH (M/T) (ABOVE CLUTCH PEDAL, ON BRACKET) CPP SWITCH SIG (M/T) CRUISE CANCEL SIG CRUISE CONTROL MODULE (RIGHT SIDE OF ENGINE COMPT) CRUISE CONTROL ON/OFF SWITCH CRUISE DISABLE OUTPUT CRUISE ENGAGED INPUT CRUISE FUSE CRUISE RELEASE (A/T) CRUISE SW FUSE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT IN RUN INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE M/T OFF OFF ON POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) PPL R/A RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) S/C SPLICE PACK TCC/BRAKE SWITCH (A/T) (BELOW LEFT SIDE OF DASH) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON REAR OF ENGINE/TRANSAXLE) VSS HIGH VSS LOW VSS OUTPUT YEL WIRE

2.2L 3.4L ABS FUSE 4 ABS/EVO/IGN FUSE BATTERY GROUND GROUND BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (EBCM) (INSIDE LEFT FRONT FENDER) ELECTRONIC VARIABLE ORIFICE (EVO) SOLENOID GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE POWER STEERING PUMP ACTUATOR PPL RED WIRE STEERING WHEEL POSITION SENSOR UNDERHOOD FUSE BLOCK (IN LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) WHT WIRE

1-2 SHIFT SOL 2-3 SHIFT SOL TCC PWM SOL AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE FLUID TEMPERATURE SENSOR AUTOMATIC TRANSAXLE INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE F/P INJR FUSE 48 FUEL PUMP RELAY 18 GRY WIRE HOT IN RUN, BULB TEST OR START IGNITION COILS IGNITION CONTROL MODULE (TOP REAR OF ENGINE) INTER- CONNECT LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE PNK 22 23 24 25 26 27 28 WIRE PNK WIRE PPL PRESSURE CONTROL SOL RED WIRE RED/BLK WIRE RELEASE TCC REV,D,2,1 SPLICE PACK TAN WIRE TRANSAXLE RANGE SWITCH (TOP OF TRANSAXLE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IGN MOL FUSE 41 WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SS 2-3 SS TCC SOL AUTO TRANS FUSE 38 BLK WIRE BLK/WHT WIRE BRN (OR GRY) WIRE BRN WIRE BRN/WHT WIRE CMP SENS SIG CKP SENS SIG CKP SENS LOW REF MAP SENS SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENS LOW REF TFT SESN LOW REF ISS LOW VSS LOW ENGINE OIL PRESSURE SENSOR (LEFT REAR OF ENGINE) EVAP PURGE SOL PC SOL HIGH PC SOL LOW EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (RIGHT SIDE OF ENGINE) FUEL INJECTORS GENERATOR GRY WIRE GRY/BLK WIRE HEATED OXYGEN SENSOR 1 (LOWER RIGHT SIDE OF ENGINE) HEATED OXYGEN SENSOR 2 (ON REAR OF CATALYTIC CONVERTER) HOT IN RUN UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) ERLS FUSE 47 HOT IN RUN, BULB TEST OR START IAC COIL B HIGH IAC COIL B LOW IC TIMING CTRL IC TIMING CTRL IDLE AIR CONTROL VALVE (LEFT SIDE OF ENGINE) INJ 4 CTRL INJ 3 CTRL GROUND KNOCK SENS LOW REF MAP SENS LOW REF KNOCK SENS SIG KNOCK SENSOR (LOWER LEFT SIDE OF ENGINE) LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (LEFT SIDE OF ENGINE) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 22 23 24 25 26 27 28 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (BELOW LEFT SIDE OF DASH) PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE SPLICE PACK TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSY) TP SENS LOW REF TP SENS SIG TRS SIG P TRS SIG C TRS SIG B TRS SIG A VEHICLE SPEED SENSOR (ON REAR OF TRANSAXLE) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 PNK WIRE 1-2 SHIFT SOLENOID VALVE 2-3 SHIFT SOLENOID VALVE 32 33 PNK WIRE A/C REFRIGERANT PRESSURE SENSOR (FRONT OF ENG COMPT) AUTO TRAN FUSE 38 IGN MOD FUSE 41 AUTO- MATIC INPUT SHAFT SPEED SENSOR AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE TEMPERARTURE SENSOR BLK WIRE BLK/WHT WIRE BLU DK WIRE BRN WIRE BRN/WHT WIRE BYPASS CTRL IC CTRL CRANKSHAFT POSITION D,2,1 SW DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DR SW ENGINE OIL LEVEL SWITCH (AT REAR OF ENG) ENGINE OIL PRESSURE SENSOR (LOWER LEFT SIDE OF ENG) F/P INJR FUSE 48 FUEL PUMP RELAY GND IGN PNK WIRE GRY WIRE HOT IN RUN OR START IGNITION CONTROL MODULE (TOP RIGHT REAR OF ENG) LEFT I/P FUSE BLOCK LO SW LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP RIGHT SIDE OF ENG) ORG/ WIRE ORG/BLK WIRE PNK 11 12 13 14 15 16 17 18 19 WIRE PNK 8 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE REV SW TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC SW TORQUE CONVERTER CLUTCH PWM SOLENOID VALVE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE