Oldsmobile Alero I (1999-2004) computer data lines system Wiring diagrams

5 VOLT REF A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C PRESS SIG COMPRESSOR CLUTCH RELAY CONTROL BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE GRY WIRE LOW REF POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) PPL RED/BLK WIRE SERIAL DATA CLASS 2 SPLICE PACK

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 COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C PRESS SIG COMPRESSOR CLUTCH RELAY CONTROL BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE GRY WIRE LOW REF POWERTRAIN CONTROL MODULE (PCM) (BELOW LEFT SIDE OF DASH) PPL RED/BLK WIRE SERIAL DATA CLASS 2 SPLICE PACK

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

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

1134 1201 PK BRAKE SW LOW BEAM IN HIGH BEAM IN AL SENS SIG AL SENS REF 33 34 PNK WIRE AMBIENT LIGHT SENSOR (ON TOP OF DASH) AUTO HDLP CTRL RELAY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL RELAY FOG LAMP SWITCH FOG LP RELAY ALC RELAY DRL RELAY FOG LP SW SERIAL DATA FOG LPS FUSE FOG LPS RELAY HIGH BEAM HIGH BEAM IND HIGH LOW FLASH-TO-PASS 5 6 7 HOT AT ALL TIMES HOT IN HTR A/C FUSE INSTRUMENT PANEL CLUSTER (IPC) LEFT HEADLAMP ASSEMBLY LH HDLP FUSE LOW BEAM LT BLU WIRE LT GRN/BLK WIRE OFF PARK HEAD FLASH-TO-PASS ON INDICATOR ORG/ WIRE PARK BRAKE SWITCH (PART OF PARK BRAKE ASSEMBLY) PNK 1200 1138 1137 WIRE PNK WIRE PNK/WHT WIRE PPL RH HDLP FUSE RIGHT FOG LAMP LEFT FOG LAMP RIGHT HEADLAMP ASSEMBLY HIGH BEAM RIGHT I/P FUSE BLOCK (RIGHT SIDE OF DASH) RUN WIRE SPLICE PACK TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK (LEFT SIDE OF ENGINE COMPT) YEL/BLK WIRE

1 2 BATTERY (B+) SERIAL DATA PPL BLK WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DOOR LK/UNLK IN DOOR LOCK FUSE DOOR LOCK RELAY DOOR UNLOCK RELAY DRIVER DOOR LK DOOR LK DOOR UNLK DRIVER DOOR LOCK ACTUATOR DRIVER DOOR LOCK SWITCH DRIVER DOOR UNLOCK RELAY (W/ RFA) FRONT PASSENGER DOOR LOCK ACTUATOR FRONT PASSENGER DOOR LOCK SWITCH GROUND GRY WIRE HOT AT ALL TIMES LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LEFT REAR DOOR LOCK ACTUATOR LOCK LT BLU WIRE ORG/ WIRE REMOTE CONTROL DOOR LOCK RECEIVER (UNDER REAR PACKAGE SHELF) RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RIGHT REAR DOOR LOCK ACTUATOR SPLICE PACK TAN WIRE TRUNK REL/RFA FUSE UNLOCK W/ 8 SPEAKER AUDIO SYSTEM W/O 8 SPEAKER AUDIO SYSTEM WHT WIRE YEL WIRE

8 250 1672 INTERIOR LIGHTS SYSTEM AM/ ANTENNA AMPLIFIER MODULE (ON RIGHT REAR PILLAR, BENEATH TRIM) ANTENNA INPUT ANTENNA VOLTAGE I/P LMP VOLTAGE GROUND GAIN CNTRL SIG BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROLS LR SPEAKER (+) LR SPEAKER (-) LT BLU WIRE LT GRN WIRE MUTE NCA WIRE ORG/ WIRE PLAY PPL PPL SERIAL DATA PRE RADIO RADIO ANTENNA RADIO ON SIG REMOTE RADIO CNTRL LF SPEAKER (+) LF SPEAKER (-) REAR ANTENNA DEFOGGER GRID RF SPEAKER (-) RF SPEAKER (+) PRK LAMP VOLTAGE RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RADIO BATTERY FUSE RIGHT STEERING WHEEL CONTROLS RR SPEAKER (-) RR SPEAKER (+) GROUND SEEK SET- STEERING WHEEL ASSEMBLY (PONTIAC) TAN WIRE VOL (-) WHT WIRE YEL WIRE

8 250 INTERIOR LIGHTS SYSTEM AM/ ANTENNA AMPLIFIER MODULE (ON RIGHT REAR PILLAR, BENEATH TRIM) ANTENNA INPUT ANTENNA VOLTAGE I/P LMP VOLTAGE GROUND GAIN CNTRL SIG BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT FRONT SPEAKER LEFT FRONT TWEETER SPEAKER LEFT I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LEFT REAR SPEAKER LEFT STEERING WHEEL CONTROLS LF SPEAKER (+) LF SPEAKER (-) LR SPEAKER (+) LR SPEAKER (-) LT BLU WIRE LT GRN WIRE MUTE NCA WIRE ORG/ WIRE PLAY PPL SERIAL DATA PRE RADIO RADIO ANTENNA RADIO ON SIG REMOTE RADIO CNTRL REAR ANTENNA DEFOGGER GRID RED WIRE RF SPEAKER (-) RF SPEAKER (+) PRK LAMP VOLTAGE RIGHT FRONT SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RADIO BATTERY FUSE RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROLS RR SPEAKER (-) RR SPEAKER (+) GROUND SEEK SET- STEERING WHEEL ASSEMBLY (PONTIAC) TAN WIRE VOL (-) WHT WIRE YEL WIRE