Engine Controls Schematics. Oldsmobile Alero 2003

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2003 🢒 Alero 🢒 Engine 🢒 Engine Electrical 🢒 Engine Controls Schematics

Figure 1:	Power, Ground, Serial Data and MIL Master Electrical Component List Powertrain Control Module Description 5 Volt and Low Reference Bussing OBD II Symbol Description Notice L/H BEC BATT1, AUX PWR/CIGAR, PARK LPS, PCM BATT, PWR MIRROR, DR LOCK, TRUNK REL/Radio Amp Fuses, and RWR SEAT Circuit Breaker IGN SW-BATT2, WIPER, AIR BAG, TURN LPS, IGN MOD, B/U LP/BTSI/ PCM IGN, F/P INJR, A/C BFC, AUTO TRANS, ABS/EVO/IGN Fuses IGN SW-BATT1, HTR-A/C, ERLS, CRANK Fuses PCM ACC, IPC/BFC ACC Fuses PCM ACC, IPC/BFC ACC Fuses PCM ACC, IPC/BFC ACC Fuses G102 and G104 G102 and G104 Data Link Connector (DLC) Schematics
Figure 2:	5 Volt and Low Reference Bussing Master Electrical Component List Powertrain Control Module Description Engine Data Sensors - Pressure and Temperature Power, Ground, Serial Data and MIL OBD II Symbol Description Notice
Figure 3:	Engine Data Sensors - Pressure and Temperature Master Electrical Component List Powertrain Control Module Description Heated Oxygen Sensors 5 Volt and Low Reference Bussing OBD II Symbol Description Notice Oil Pressure and Level Switch
Figure 4:	Heated Oxygen Sensors Master Electrical Component List Powertrain Control Module Description Ignition System Engine Data Sensors - Pressure and Temperature OBD II Symbol Description Notice IGN SW-BATT1, HTR-A/C, ERLS, CRANK Fuses G203
Figure 5:	Ignition System Master Electrical Component List Electronic Ignition (EI) System Description Fuel Pump Controls Heated Oxygen Sensors OBD II Symbol Description Notice IGN SW-BATT2, WIPER, AIR BAG, TURN LPS, IGN MOD, B/U LP/BTSI/ PCM IGN, F/P INJR, A/C BFC, AUTO TRANS, ABS/EVO/IGN Fuses Engine Controls Schematic Icons G103 and G105 G103 and G105
Figure 6:	Fuel Pump Controls Master Electrical Component List Fuel System Description Fuel Injectors Ignition System OBD II Symbol Description Notice G302 IGN SW-BATT2, WIPER, AIR BAG, TURN LPS, IGN MOD, B/U LP/BTSI/ PCM IGN, F/P INJR, A/C BFC, AUTO TRANS, ABS/EVO/IGN Fuses G103 and G105 G103 and G105 G103 and G105
Figure 7:	Fuel Injectors Master Electrical Component List Fuel System Description MAF, EVAP Controls, IAC, and EGR Fuel Pump Controls OBD II Symbol Description Notice IGN SW-BATT2, WIPER, AIR BAG, TURN LPS, IGN MOD, B/U LP/BTSI/ PCM IGN, F/P INJR, A/C BFC, AUTO TRANS, ABS/EVO/IGN Fuses
Figure 8:	EVAP Controls and EGR Master Electrical Component List Evaporative Emission Control System Description Controlled/Monitored Subsystem References Fuel Injectors OBD II Symbol Description Notice IGN SW-BATT2, WIPER, AIR BAG, TURN LPS, IGN MOD, B/U LP/BTSI/ PCM IGN, F/P INJR, A/C BFC, AUTO TRANS, ABS/EVO/IGN Fuses IGN SW-BATT1, HTR-A/C, ERLS, CRANK Fuses IGN SW-BATT1, HTR-A/C, ERLS, CRANK Fuses G102 and G104 G102 and G104
Figure 9:	Controlled/Monitored Subsystem References Master Electrical Component List Powertrain Control Module Description Transmission Controls - A/T MAF, EVAP Controls, IAC, and EGR OBD II Symbol Description Notice Compressor Controls Oil Pressure and Level Switch Power and Ground Charging System Starting System - LA1 Cooling Fans Power and Ground
Figure 10:	Transmission Controls - A/T Master Electrical Component List Powertrain Control Module Description Controlled/Monitored Subsystem References OBD II Symbol Description Notice Transmission Switches Transmission Solenoids Transmission Switches PNP Switch