Oldsmobile Alero I (1999-2004) nca Wiring diagrams

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

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

2.2L 3.4L 3.4L 2.2L A/T SHIFT LOCK CONTROL SOLENOID ACCESSORY POWER OUTLET (OLDS) WINDSHIELD/ WIPER MOTOR ASSEMBLY AUXILIARY PARK LAMP LF (PONT) AUXILIARY PARK LAMP RF (PONT) BATTERY BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH CIGAR LIGHTER CONTROL AIRFLOW MODULE (PCM) (2.2L) COOLANT LEVEL SWITCH COOLING FAN- RIGHT (2.2L) CRUISE CONTROL MODULE (IF EQUIPPED) DATA LINK CONNECTOR (DLC) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE OIL LEVEL SWITCH (3.4L) FOG LAMP LF FOG LAMP RF FUSE BLOCK (LEFT I/P) FUSE BLOCK- UNDERHOOD HEATED REAR OXYGEN SENSOR HORN ASSEMBLY I/P COMPARTMENT LAMP I/P COMPARTMENT LAMP SWITCH IGNITION CONTROL MODULE (ICM) (2.2L) IGNITION CONTROL MODULE (ICM) (3.4L) BRAKE FLUID LEVEL SWITCH MASS AIRFLOW (MAF) SENSOR (3.4L) NCA WIRE OLDS PARK/NEUTRAL POSITION SWITCH (A/T) PARK/TURN SIGNAL LAMP- LF PARK/TURN SIGNAL LAMP- RF POWERTRAIN CONTROL MODULE (PCM) (3.4L) SENSOR 2 (3.4L) RADIO SHIFT INDICATOR LAMP SIR COIL ASSEMBLY SPLICE PACK STEERING WHEEL CONTROLS- RIGHT TRACTION CONTROL SWITCH BLOWER MOTOR TURN SIGNAL/ MULTIFUNCTION SWITCH HAZARD SWITCH WASHER FLUID LEVEL SENSOR WINSHIELD WASHER FLUID PUM

4-WAY ADJUST 6-WAY ADJUST AIR TEMPERATURE ACTUATOR AUDIO AMPLIFIER BACK-UP LAMP-RH BACKUP LAMP (LEFT) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) CENTER HIGH MOUNTED STOP LAMP (CHMSL) DOOR AJAR SWITCH- LR DOOR AJAR SWITCH- RR DOOR LOCK SWITCH- DRIVER DOOR JAMB SWITCH- RF DOOR LOCK SWITCH- FRONT PASSENGER FOG LAMP SWITCH (IF EQUIPPED) FUEL PUMP, SENDER ASSEMBLY DOOR JAMB SWITCH- LF FUSE BLOCK (LEFT I/P) HWAC CONTROL ASSEMBLY I/P DIMMER SWITCH IGNITION SWITCH INSIDE REARVIEW MIRROR/ W/ READING LAMPS (IF EQUIPPED) INSTRUMENT PANEL CLUSTER (IPC) LAMP ASSEMBLY- LR LAMP ASSEMBLY- RR LICENSE LAMP DOME LAMP NCA WIRE OLDS OUTSIDE REAR VIEW MIRROR SWITCH SEAT BELT SWITCH PONT PONT RADIO REAR COMPARTMENT LID RELEASE ACTUATOR REAR COMPARTMENT LID RELEASE WINDOW SWITCH- FRONT PASSENGER REAR WINDOW DEFOGGER GRID REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) SEAT ADJUSTER SWITCH DRIVER SEDAN SEDAN, COUPE SPLICE PACK SUNROOF MODULE TRACTION CONTROL SWITCH TRIP ODOMETER RESET SWITCH WINDOW SWITCH- DRIVER

AUTO PARK LAMP RELAY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE CRUISE CONTROL ON/OFF SWITCH CRUISE SW LPS FUSE DK GRN WIRE GRY WIRE GRY/BLK WIRE HAZARD SWITCH HEAD HOT AT ALL TIMES HVAC CONTROL ASSEMBLY I/P COMPARTMENT LAMP INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INST LPS FUSE INSTRUMENT CLUSTER (5 BULBS) LAMP DIMMER MODULE (BEHIND LEFT SIDE OF DASH) NCA WIRE OFF ORG/ WIRE PANEL DIMMER SWITCH PARK PARK LPS FUSE RADIO RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) SPLICE PACK TO RIGHT I/P FUSE BLOCK (DIAGRAM 2 OF 2) TRANSAXLE SHIFT INDICATOR LIGHT TURN/ SIGNAL MULTIFUNTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, ON STRUT TOWER) WHT WIRE YEL WIRE

1 OF 2) 4-WAY ADJUST 6-WAY ADJUST ABS FUSE ACCESSORY POWER OUTLET (OLDS) AUDIO AMPLIFIER REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) AUTO HDLP CONTROL RELAY AUTO PRK LMP CRTL RELAY AUX PWR/CIGAR FUSE BATTERY BFC BATT FUSE BLK WIRE BODY CONTROL MODULE (BCM) BRN WIRE CIGAR LIGHTER COOL FAN 1 FUSE COOL FAN 1 RELAY COOL FAN 2 FUSE COOL FAN 2 GROUND FUSE COOL FAN 2 RELAY COOLING FAN- RIGHT (3.4L) ELECTRONIC BRAKE CONTROL MODULE (EBCM) DK BLU WIRE DOOR UNLOCK RELAY DRIVER DOOR UNLOCK RELAY (AUO) DOOR LOCK RELAY DRL RELAY FOG LPS FUSE FOG LPS RELAY FROM ABS FUSE (DIAGRAM 1 OF 2) FROM FAN CONTROL RELAY 2 (DIAGRAM 1 OF 2) FROM GEN BAT FUSE (DIAGRAM 1 OF 2) FUSE BLOCK (LEFT I/P) FUSE BLOCK- RIGHT I/P FUSE BLOCK- UNDERHOOD FUSIBLE LINK GEN BATT FUSE GENERATOR GENERATOR (3.4L) HAZARD LPS FUSE HAZARD SWITCH HEADLAMP-LEFT HEADLAMP-LOW BEAM- LEFT HEADLAMP-RIGHT HEADLAMP-LOW BEAM- RIGHT HI BLO MOT FUSE HORN FUSE HORN RELAY COOL FAN MODE RELAY HVAC BLOWER RELAY HVAC CONTROL ASSEMBLY BODY CONTROL MODULE (BCM) I/P DIMMER MODULE I/P DIMMER SWITCH INST LPS FUSE REAR FOG LPS RELAY INSTRUMENT PANEL CLUSTER INTERIOR, EXTERIOR LAMPS SYSTEM IPC/HVAC BATT FUSE L/H BEC BATT 2 FUSE IGN SW- BATT 2 FUSE IGN SW BATT 1 FUSE LH BEC BATT 1 FUSE LH HDLP FUSE NCA WIRE OLDS ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH SEAT ADJUSTER SWITCH- DRIVER PARK LPS FUSE PCM BATT FUSE POWERTRAIN CONTROL MODULE (PCM) PWR MIRROR FUSE DR LOCK FUSE PWR SEAT CIRCUIT BREAKER RADIO RADIO BATT FUSE INT LPS FUSE RED WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RH BEC BATT FUSE RH HDLP FUSE RR DEFOG FUSE RR DEFOG RELAY SEAT ADJUSTER SWITCH DRIVER SPLICE PACK STARTER RELAY 11 STARTER SOLENOID STOP LPS FUSE STOPLAMP SWITCH TO ABS BATT FUSE (DIAGRAM 1 OF 2) TO HI BLO MOT FUSE (DIAGRAM 1 OF 2) TO IGN-SW BATT 2 FUSE (DIAGRAM TO IGNITION SWITCH (DIAGRAM 2 OF 2) TRUNK REL RELAY TRUNK REL/ RADIO AMP FUSE TURN SIGNAL/ MULTIFUNCTION SWITCH UPLEVEL, 4 SPEAKER SYSTEM YEL WIRE

3.4L A/C BFC FUSE A/C COMP RELAY A/T ABS/ EVO/ IGN FUSE AIR BAG FUSE AIR TEMPERATURE ACTUATOR AUTO TRANS FUSE BODY CONTROL MODULE (BCM) BRN WIRE CLUTCH PEDAL POSITION (PNP) SWITCH CRANK FUSE DK GRN WIRE DRL RELAY REAR DEFOGGER RELAY ERLS FUSE F/P INJR FUSE FROM IGN SW BATT 1 FUSE (DIAGRAM 1 OF 2) FROM IGN SW BATT 2 FUSE (DIAGRAM 1 OF 2) FROM IGNITION SWITCH (DIAGRAM 2 OF 2) FUEL INJECTORS FUEL PUMP RELAY FUSE BLOCK (LEFT I/P) FUSE BLOCK, UNDER- HOOD FUSE BLOCK- RIGHT I/P FUSE BLOCK- UNDERHOOD HAZARD SWITCH HCAV CONTROL ASSEMBLY BODY CONTROL MODULE (BCM) HEATED OXYGEN SENSOR HTR A/C FUSE HVAC BLOWER FUSE CRUISE FUSE SUNROOF FUSE IGN MOD FUSE B/U LP/ BTSI FUSE PCM IGN FUSE IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INSTRUMENT PANEL CLUSTER (IPC) IPC/BFC ACC FUSE LOCK M/T MASS AIRFLOW (MAF) SENSOR (3.4L) NCA WIRE ORG/ WIRE PARK/ NEUTRAL POSITION (PNP) SWITCH POWERTRAIN CONTROL MODULE (PCM) PCM ACC FUSE PNK PNK PNK (M/T) (3.4L) (2.2L) (3.4L) 19 24 (2.2L) (A/T) WIRE PNK PNK PNK PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) PPL PPL 61 19 (2.2L) (3.4L) PWR WNDWS CIRCUIT BREAKER CRUISE SW FUSE RED WIRE RED/BLK WIRE SENSOR 1 (2.2L) SENSOR 2 SIR COIL ASSEMBLY WINDOW SWITCH- DRIVER TO HTR A/C IGN FUSE (DIAGRAM 2 OF 2) TO IGN MOD FUSE (DIAGRAM 2 OF 2) TO SUNROOF FUSE (DIAGRAM 2 OF 2) TURN LPS FUSE TURN SIGNAL/ MULTIFUNCTION SWITCH WINDSHIELD WIPER MOTOR ASSEMBLY WIPER FUSE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE DOWN DRIVE UNIT DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE GRY WIRE HOT AT ALL TIMES POWER MIRROR FUSE D L-R LEFT LEFT I/P FUSE BLOCK MIRROR CONTROL SWITCH MIRROR SELECT SWITCH NCA WIRE OFF ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL RED WIRE RIGHT SPLICE PACK TO INTERIOR LIGHTS SYSTEM UP DN WHT 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

5 VOLT REF A 5 VOLT REF A 5 VOLT REF B SEN GND A/C COMP RLY A/C SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT TOP OF ENG) CMP SENS B+ CMP SENS GND CRANK FUSE 54 CRANKSHAFT POSITION CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ERLS FUSE 47 EVAP CAN VENT FUEL PUMP RLY EGR VAL IGN + MIL CTRL FUEL INJ 4 FUEL TANK PRESS TR SW C IN TRANS RANGE B ENG OIL LEVEL SW CRUISE ENGAGE IN FUEL TANK PRESSURE SENSOR (UNDER REAR OF VEHICLE) GEN TERM L OUT GENERATOR GRY WIRE GRY/BLK WIRE HOT IN RUN IAC COIL A HI IAC COIL A LO PC SOL VAL CTRL PC SOL VAL CTRL IAC COIL B LO IAT SEN SIG IGN MALFUNCTION INDICATOR LAMP INSTRUMENT CLUSTER LEFT I/P FUSE BLOCK LOW REF LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/BLK WIRE PNK 8 9 10 11 12 13 14 WIRE POWERTRAIN CONTROL MODULE (BELOW LEFT SIDE OF DASH, NEAR STEERING COLUMN) PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL CTRL TCC RELEASE SW TFT SENS SIG FUEL LEVEL IN IGN + VOLT PPL THROTTLE POSITION SENSOR (ON THROTTLE BODY) TP SEN IN TR SW D IN TRANS RANGE C TRANS RANGE A ENG OIL PRESS IN UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE