What is the voltage of the ABS sensor connector?
2 Answers
The voltage of the ABS sensor connector is 5V to 8V, with an output voltage of 650mV to 850mV. During actual measurement, due to the fault protection function of the electronic stability control module, the voltage cannot be sustained after unplugging the ABS sensor connector, so voltage data cannot be used as a judgment criterion. The ABS sensor is an important component of the ABS system. ABS can maintain the directional stability of the vehicle during braking while driving, shorten the braking time and distance, and effectively prevent wheel lock-up and uncontrolled skidding during emergency braking, thereby enhancing the vehicle's controllability and making driving safer.
I've been repairing cars for many years. The voltage at the ABS sensor connector is generally a stable 5 volts in most vehicles, but it depends on the model - some older cars might use 12 volts. To confirm, you'll need to use a multimeter: unplug the connector, turn the ignition to ON position (don't start the engine), then measure the voltage between ground and power pins; the signal pin usually shows pulse variations between 0.5V to 5V, with frequency increasing with wheel speed. If you get zero voltage, it could indicate a blown fuse, wiring short, or failed sensor - this needs checking whenever the ABS light comes on. While this low voltage isn't dangerous to humans, improper handling can cause shorts that damage the ECU module, so it's best to disconnect the battery negative terminal first. Remember the braking system is critical - inaccurate diagnosis can create safety hazards, so I recommend against DIY attempts and suggest consulting professionals to avoid risks.
