What does BCM mean in automotive circuits?

1 Answers
OJune
07/29/25 7:36pm
Automotive BCM refers to the Body Control Module, which primarily controls the electrical appliances in the vehicle body, such as the entire vehicle's lighting system, wipers, washers, door locks, power windows, sunroof, power mirrors, and remote control. The following are the functions of the automotive BCM: 1. Receives input information from sensors and converts the input information into signals that the microprocessor can receive; 2. After outputting execution commands, converts weak signals into execution commands and corrects them after outputting fault information; 3. Performs operational analysis, calculates execution command data based on information parameters, and compares the input information with standard values; 4. Stores, calculates, analyzes, and processes information, analyzes the programs used for output values, stores the characteristic parameters of the vehicle model, data during calculations, and fault information.
Was this review help?
9
3
Share
More Forum Discussions

How many times a year should a car be inspected after 15 years?

After 15 years of use, a car needs to be inspected twice a year. Here are the specific regulations for vehicle annual inspections: 1. Passenger vehicles for commercial use: Inspected once a year within 5 years; after 5 years, inspected once every 6 months. 2. Trucks and large or medium-sized non-commercial passenger vehicles: Inspected once a year within 10 years; after 10 years, inspected once every 6 months. 3. Small and mini non-commercial passenger vehicles: Inspected once every 2 years within 6 years; after 6 years, inspected once a year; after 15 years, inspected once every 6 months.
10
3
Share

How long does a car need to run after a jump start?

If using a regular charging mode, it typically takes about 12 hours. If relying on the car's own alternator for charging, driving for 1 to 2 hours should suffice. Here are some precautions for jump-starting: (1) The rescue vehicle should turn off its power to prevent short circuits caused by incorrect connections and avoid equipment damage; (2) Use dedicated automotive jumper cables, not homemade ones; (3) When connecting the cables, follow the sequence of connecting the positive terminal first, then the negative terminal, ensuring the positive and negative terminals do not touch; (4) After connecting the jumper cables, promptly start the engine of the rescue vehicle to ensure it has sufficient power; (5) Once the rescued vehicle's engine starts successfully, disconnect the negative terminal first, then the positive terminal to prevent short circuits.
2
5
Share

How Often Should a Vehicle Be Waxed?

Generally, waxing should be done every 3-4 months. Depending on the driving environment and parking conditions of the vehicle, the interval for waxing may vary. Below are the benefits of waxing: Waterproofing and Acid Rain Protection: As a traditional part of car detailing, the primary benefits of waxing are waterproofing and acid rain protection. The protective layer of wax significantly reduces the amount of water droplets adhering to the car body, with an effectiveness rate ranging from 50% to 90%. Protection Against High Temperatures and UV Rays: As the weather gets hotter, vehicles that are driven or parked outdoors year-round are prone to paint aging and fading due to sunlight exposure. The film formed by waxing can reflect some of the light, effectively preventing paint aging.
9
0
Share

What are the standards for adjusting car lights?

Drive the car onto a flat road, align the low beam points at a 30-meter distance and merge them together, then adjust the high beam points to be parallel to the ground. Below is relevant information about car light adjustment: 1. Low beam adjustment: Vehicle light adjustment typically involves the left-right and height alignment of low beams, which can be adjusted via the knobs behind the headlight assembly. Owners can adjust the lights themselves using tools. 2. Headlight adjustment: Lift the engine hood, locate the adjustment knobs at the rear of the headlight assembly, and use the appropriate tools for adjustment. Before adjusting, determine whether the knob controls left-right or up-down alignment. Park the vehicle directly facing a wall at a distance of about 10 meters, observe the height of the left and right lights, and use tape or other markers for measurement and comparison if necessary, then proceed with adjustment.
13
0
Share

What Causes Abnormal Noise from the Exhaust Pipe?

Abnormal noise from the exhaust pipe can be caused by the following reasons: 1. Exhaust pipe aging: Caused by the aging of the exhaust pipe, which requires re-fixing or replacing the exhaust pipe. 2. Three-way catalytic converter failure: If the car's three-way catalytic converter fails, it cannot properly purify exhaust gases, leading to blockages and compression inside, resulting in abnormal noise from the exhaust pipe. In this case, it is necessary to visit a repair shop or 4S store for professional inspection and repair. 3. Car ignition system failure: If the car's ignition system fails, fuel cannot burn normally in the cylinders, leading to symptoms such as weak acceleration, easy stalling, and abnormal noise from the exhaust pipe. In this situation, a detailed inspection of the car's ignition system is also required.
16
3
Share

Why does the clutch have air again after bleeding?

The possible reasons for the clutch having air again after bleeding are: 1. Reason one: Poor quality of hydraulic fluid with high water content. 2. Reason two: Air leakage in the clutch slave cylinder. 3. Reason three: Air leakage in the oil circuit or connections. Below is an introduction to related content: 1. Clutch: The clutch functions when the vehicle starts and shifts gears. At this time, there is a speed difference between the primary and secondary shafts of the transmission. The engine's power must be disconnected from the primary shaft before the synchronizer can effectively match the speed of the primary shaft with that of the secondary shaft. 2. Principle: After engaging the gear, the clutch connects the primary shaft to the engine's power again, allowing the power to continue transmitting.
9
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.