Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2012SONIC L4-1.4L TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTDIAGRAMSELECTRICAL DIAGRAMS
2012 Chevrolet Sonic L4-1.4L Turbo
Electrical Diagrams
2012 Chevrolet Sonic L4-1.4L TurboSECTION Electrical Diagrams
Engine Controls Schematics
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)
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
F9UA, F10UA, F11UA, F12UA, F13UA, F14UA, and F15UA Fuses
Electrical Center Identification Views
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
F44UA, F45UA, F46UA, and F47UA Fuses
F44UA, F45UA, F46UA, and F47UA Fuses
Data Communication Schematics
G103 and G104
5V1, 5V2, and Low Reference Bus (1 of 2)
Master Electrical Component List
Engine Control Module Description
Control Module References
5V3, 5V4, and Low Reference Bus (2 of 2)
Module Power, Ground, Serial Data, and MIL
5V3, 5V4, and Low Reference Bus (2 of 2)
5V3, 5V4, and Low Reference Bus (2 of 2)
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Humidity, Pressure, and Temperature
5V1, 5V2, and Low Reference Bus (1 of 2)
5V1, 5V2, and Low Reference Bus (1 of 2)
Engine Data Sensors- Humidity, Pressure, and Temperature
Master Electrical Component List
Air Intake System Description
Control Module References
Engine Data Sensors - Oxygen Sensors
5V3, 5V4, and Low Reference Bus (2 of 2)
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
G103 and G104
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Engine Data Sensors- Oxygen Sensors
Master Electrical Component List
Fuel System Description
Control Module References
Engine Data Sensors - Throttle Controls
Engine Data Sensors - Humidity, Pressure, and Temperature
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Engine Data Sensors- Throttle Controls
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition Controls - Ignition System
Engine Data Sensors - Oxygen Sensors
Master Electrical Schematic Icons
Ignition Controls- Ignition System
Master Electrical Component List
Electronic Ignition System Description
Control Module References
Ignition Controls - Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators
Engine Data Sensors - Throttle Controls
F40UA, F41UA, F42UA, and F43UA Fuses
F44UA, F45UA, F46UA, and F47UA Fuses
G103 and G104
Ignition Controls- Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators
Master Electrical Component List
Electronic Ignition System Description
Control Module References
Fuel Controls - Fuel Pump (-NT7) and Fuel Injectors
Ignition Controls - Ignition System
Master Electrical Schematic Icons
Fuel Controls- Fuel Pump (-NT7) and Fuel Injectors
Master Electrical Component List
Fuel System Description
Control Module References
Fuel Controls - Evaporative Emission and Device Controls
Ignition Controls - Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators
F40UA, F41UA, F42UA, and F43UA Fuses
F44UA, F45UA, F46UA, and F47UA Fuses
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
Electrical Center Identification Views
G102
G307 and G400
Fuel Controls - Fuel Pump (NT7) and Fuel Pump Controls (LUV)
Fuel Controls- Evaporative Emission and Device Controls
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Pump (-NT7) and Fuel Injectors
F9UA, F10UA, F11UA, F12UA, F13UA, F14UA, and F15UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses
Controlled/Monitored Subsystem References
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Evaporative Emission and Device Controls
Compressor Controls (C60)
Engine Controls Schematics
Cruise Control (K34)
Charging
Power, Ground, Serial Data, and Gauges
License Plate and Backup Lamps
Indicators
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.