Engine Controls Schematics. Buick LaCrosse 2007

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2007 🢒 LaCrosse 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Engine Controls Schematics

Figure 1:	Module Power, Ground, Serial Data, and MIL Master Electrical Component List Powertrain Control Module Description Control Module References 5 Volt and Low Reference Fuse Block-Underhood B+ Bus G101, G102, G103, G111, G112, and G113 Ignition Switch Ignition Switch Fuse Block-Underhood B+ Bus Fuse Block - Underhood ABS, TRANS SOL, PCM, SIR, and DIPSLAY Fuses, CRANK Relay, and Fuse Block - I/P CRUISE SW Fuse Data Link Connector Schematics L26 G101, G102, G103, G111, G112, and G113
Figure 2:	5-Volt and Low Reference Master Electrical Component List Powertrain Control Module Description Control Module References Pressure and Temperature Sensors Module Power, Ground, Serial Data, and MIL
Figure 3:	Pressure and Temperature Sensors Master Electrical Component List Powertrain Control Module Description Control Module References MAF, VSS 5 Volt and Low Reference
Figure 4:	MAF, VSS Master Electrical Component List Powertrain Control Module Description Control Module References Oxygen Sensors Pressure and Temperature Sensors Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus Fuse Block - Underhood ETC, ELEK IGN (L26), FUEL INJ (L26), 02 SSR (L26), and EMISSION Fuses Fuse Block - Underhood ETC, ELEK IGN (L26), FUEL INJ (L26), 02 SSR (L26), and EMISSION Fuses PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS and VSS Sensors (L26) G101, G102, G103, G111, G112, and G113
Figure 5:	Oxygen Sensors Master Electrical Component List Powertrain Control Module Description Control Module References Electronic Throttle Controls MAF, VSS Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus
Figure 6:	Electronic Throttle Controls Master Electrical Component List Throttle Actuator Control (TAC) System Description Control Module References Ignition Controls Oxygen Sensors Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus Object Detection Schematics Turn Signal, Hazard and Stop Lamps Outputs Data Active Brake and Stability G101, G102, G103, G111, G112, and G113
Figure 7:	Ignition Controls Master Electrical Component List Electronic Ignition (EI) System Description Control Module References Fuel Pump Controls Electronic Throttle Controls Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus Data Active Brake and Stability
Figure 8:	Fuel Pump Controls Master Electrical Component List Fuel System Description Control Module References Fuel Injectors Ignition Controls Fuse Block-Underhood B+ Bus Power, Ground, Serial Data, and Gages L26 G302 G101, G102, G103, G111, G112, and G113
Figure 9:	Fuel Injectors Master Electrical Component List Fuel System Description Control Module References EVAP, EGR, and FTP Controls Fuel Pump Controls Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus
Figure 10:	EVAP, EGR, and FTP Controls Master Electrical Component List Fuel System Description Control Module References AIR Controls (NU3) Fuel Injectors Fuse Block - Underhood BATT MAIN 1 Fuse Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus Fuse Block - Underhood ETC, ELEK IGN (L26), FUEL INJ (L26), 02 SSR (L26), and EMISSION Fuses Power, Ground, Serial Data, and Gages L26 Fuse Block - Underhood ETC, ELEK IGN (L26), FUEL INJ (L26), 02 SSR (L26), and EMISSION Fuses
Figure 11:	AIR Controls (NU6) Master Electrical Component List Secondary Air Injection System Description Control Module References Controlled/Monitored Subsystem References EVAP, EGR, and FTP Controls Fuse Block-Underhood B+ Bus Fuse Block-Underhood B+ Bus Fuse Block - Underhood ETC, ELEK IGN (L26), FUEL INJ (L26), 02 SSR (L26), and EMISSION Fuses G101, G102, G103, G111, G112, and G113 G115 (L26)
Figure 12:	Controlled/Monitored Subsystem References Master Electrical Component List Powertrain Control Module Description Control Module References A/T Control References AIR Controls (NU3) Compress Controls and Serial Data (L26) Compressor Controls and Serial Data (L26) Engine Cooling Schematics Starting - L26 Charging Ambient Air Temperature Sensor, Electronic Compass Indicators U2E Indicators UH8 Cruise Control Schematics L26
Figure 13:	A/T Control References Master Electrical Component List Powertrain Control Module Description Control Module References Controlled/Monitored Subsystem References Shift and TCC Solenoid Valves, TFT Sensor, and Stop Lamp Switch (L26) Internal Mode Switch (L26) PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS and VSS Sensors (L26)