System Diagram

Engine Controls Schematics (LSA)

Module Power, Ground, Serial Data, and MIL





Master Electrical Component List
Engine Control Module Description
Control Module References
5V1, 5V2, and Low Reference Bus (1 of 2)
F1RA, F2RA, F3RA, F4RA, F5RA, F10RA, F11RA, and F12RA Fuses
B+ Bus (1 of 2)
Power Moding
X50A Fuse Block - Underhood Label (North America)
F14UA, F15UA, F16UA, F17UA, F18UA, F19UA, and F20UA Fuses
F7UA and F8UA Fuses (L99/LS3)
Data Communication Schematics
G103 and G106

5V1, 5V2, and Low Reference Bus (1 of 2)





Master Electrical Component List
Engine Control Module Description
Control Module References
Low Reference Bus (2 of 2)
Module Power, Ground, Serial Data, and MIL

Low Reference Bus (2 of 2)





Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Pressure and Temperature
5V1, 5V2, and Low Reference Bus (1 of 2)

Engine Data Sensors - Pressure and Temperature





Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Oxygen Sensors
Low Reference Bus (2 of 2)
Power Moding
F14UA, F15UA, F16UA, F17UA, F18UA, F19UA, and F20UA Fuses
G103 and G106

Engine Data Sensors - Throttle Controls





Water Pump Replacement
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition Controls - Ignition Coils Bank 1
Engine Data Sensors - Oxygen Sensors

Engine Data Sensors - Oxygen Sensors





Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Throttle Controls
Engine Data Sensors - Pressure and Temperature
F7UA and F8UA Fuses (LFX)

Ignition Controls - Ignition Coils 1, 3, 5, and 7





Master Electrical Component List
Electronic Ignition System Description
Control Module References
Ignition Controls - Ignition Coils Bank 2
Engine Data Sensors - Throttle Controls
Module Power, Ground, Serial Data, and MIL
F9UA and F10UA Fuses (L99/LS3)
G107, G108, and G109

Ignition Controls - Ignition Coils 2, 4, 6, and 8





Master Electrical Component List
Control Module References
Ignition Controls - Crankshaft, Camshaft Position Sensors, and Knock Sensors
Ignition Controls - Ignition Coils Bank 1
Module Power, Ground, Serial Data, and MIL
F9UA and F10UA Fuses (L99/LS3)
G107, G108, and G109

Ignition Controls - Crankshaft, Camshaft Position Sensors, and Knock Sensors





Master Electrical Component List
Electronic Ignition System Description
Control Module References
Ignition Controls - Ignition Coils Bank 2
Master Electrical Schematic Icons

Fuel Controls - Fuel Injectors





Master Electrical Component List
Control Module References
Fuel Controls - Fuel Pump Controls
Module Power, Ground, Serial Data, and MIL
F9UA and F10UA Fuses (L99/LS3)

Fuel Controls - Fuel Pump Controls





Master Electrical Component List
Fuel System Description
Control Module References
Fuel Controls - Evaporative Emission Controls
Fuel Controls - Fuel Injectors
Data Communication Schematics
Master Electrical Schematic Icons
G402, G403, and G404

Fuel Controls - Evaporative Emission Controls





Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Injectors
B+ Bus (1 of 2)
F2UA, F25UA, F26UA, F31UA, F32UA, F33UA, and F34UA Fuses
Module Power, Ground, Serial Data, and MIL
F7UA and F8UA Fuses (L99/LS3)
Gages

Controlled/Monitored Subsystem References





Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Evaporative Emission Controls
Hydraulic Brakes
A/C Compressor Controls
Cooling Fans
Starting
Charging
Indicators