Electrical Diagrams

2012 Chevrolet Sonic L4-1.8LSECTION Electrical Diagrams



Engine Controls Schematics

Module Power, Ground, Serial Data, and MIL





Master Electrical Component List
Electronic Ignition System Description
Control Module References
5V1, 5V2, and Low Reference Bus (1 of 2)
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
Electrical Center Identification Views
F34UA, F35UA, F36UA, F37UA, and F39UA Fuses
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
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
Electronic Ignition System 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
Electronic Ignition System Description
Control Module References
Engine Data Sensors - Pressure and Temperature
5V1, 5V2, and Low Reference Bus (1 of 2)
5V1, 5V2, and Low Reference Bus (1 of 2)

Engine Data Sensors- Pressure and Temperature





Master Electrical Component List
Electronic Ignition 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
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Master Electrical Schematic Icons
Master Electrical Schematic Icons
G103 and G104

Engine Data Sensors- Oxygen Sensors





Master Electrical Component List
Electronic Ignition System Description
Control Module References
Engine Data Sensors - Throttle Controls
Engine Data Sensors - 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

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
Camshaft Actuator System Description
Control Module References
Link target Object 2593439 does not exist in this publication.
Ignition Controls - Ignition System
Master Electrical Schematic Icons

Fuel Controls - Fuel Pump Controls





Fuel Controls- Fuel Injectors





Master Electrical Component List
Fuel System Description
Control Module References
Fuel Controls - Evaporative Emission and Device Controls
Link target Object 2593439 does not exist in this publication.
F40UA, F41UA, F42UA, and F43UA Fuses
F44UA, F45UA, F46UA, and F47UA Fuses

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 Injectors
F40UA, F41UA, F42UA, and F43UA Fuses
F40UA, F41UA, F42UA, and F43UA Fuses

Controlled/Monitored Subsystem References





Master Electrical Component List
Electronic Ignition System Description
Control Module References
Fuel Controls - Evaporative Emission and Device Controls
Link target Object 2655234 does not exist in the database.
Cooling Fan (LUW)
Charging
Indicators
Power, Ground, Serial Data, and Gauges
License Plate and Backup Lamps
Starting
Cruise Control (K34)
Internal Mode Switch and Tap Up/Tap Down Switches

RENDER: 1.0x

NO RELATED

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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.