![]() ![]() When a short-to-ground circuit occurs, you might see blown fuses, inoperative components or lights, and so on. This can happen if a wire sheds its insulation or chafes, allowing electricity to transfer from the wire to your vehicle. Short-to-ground circuits occur when a current flows from the circuit to your car’s body.Short circuits are categorized into two types: When a short circuit crops up, electricity can’t flow properly, meaning that the electricity goes somewhere else (potentially causing damage) and/or that certain components won’t work correctly. The bottom line is this: your car's electrical system only works properly so long as the wiring is intact and uninterrupted. While this all sounds very technical, don’t worry. ![]() In the above example, the ECM can send a 5V reference voltage to the ECT, which causes the ECT to adjust its resistance based on the temperature. So long as the wiring is fully intact, electricity can flow freely between both components. These two components are located behind the glove box and engine in most vehicles, respectively. One primary sensor circuit is the wire that runs between your vehicle's engine coolant temperature sensor (ECT) and the engine control module (ECM). Actuator circuits are those for motors or lights, for example. Sensor circuits are those that handle oxygen sensors, light sensors, speed sensors, and so on. ![]() Your car's electrical system can be broadly divided into sensor and actuator circuits. To fully understand short circuits, you’ll need to know how electricity flows through your car in the first place. ![]()
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March 2023
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