How to test abs sensor with multimeter

How to test abs sensor with multimeter. Most of you will be thinking using a multimeter device can be a dangerous task. But wait, here are some easy tips, which need a multimeter to test the anti locking braking system (ABS) sensor.

How to test abs sensor with multimeter

The device marks the process as safe, easy, and quick.  If you need a precise method to test the sensor, let’s gets started

Signs of a defected ABS

  • ABS light on
  • Unresponsive brake pedal
  • More effort required for the brake pedal
  • Locking up brakes

PREREQUISITE

Safety Equipments and Tools

Whenever you are working with an electrical device, ensure safety first.

To avoid any mishaps, try using them:

  • Electrical personal protective equipment
  • gloves
  • Goggles
  • protective clothes
  • Specifications manual

Tools

  • Multimeter
  • a floor creeper
  • floor jack
  •  ramps
  •  tire jacks
  •  battery charger
  •  the test light
  •  an engine code reader
  •  brake set tools
  •  mechanic set tools

Here are the tools you need!

Let’s get the job done!

Procedure for testing the anti locking braking system using a multimeter

Removal of ABS sensor

  1. Take the car manual and look for resistance specifications for the on-tour Anti-locking Braking System (ABS) sensor.
  2. The value for most of the cars is 50 ohms. Note it down.
  3. Testing refers to the location of ABS. If the ABS is on the front wheels, you will require only front-wheel sensors. If all four wheels contain ABS, you have to test it for all four wheels.
  4. On examining the manual, you will come to know the arrangement you have.
  5. The ABS light indicates an unknown fault. It won’t show you the exact location of the defective sensor. You have to remove each wheel to check the faulty ABS.
  6. Keep checking until you find the bad one. Once you find the faulty sensor, take the Jack and lift the wheel. Upon lifting start, remove the wheel.
  7. You will observe a small canister with a wire. This canister is the ABS sensor.
  8. After locating the wire, disconnect it and start unscrewing the canister.
  9. If the sensor contains any dirt or dust, clean it with brake cleaning liquid.

 Using Multimeter Device

  1. Once the sensor is disconnected, take a multimeter and set the multimeter for the test.
  2. Select the range that will place the needle in the middle of the scale.
  3. Remember to set a medium value, a high, and a low value may cause an issue.
  4. A low value indicates the meter will peg for most results.
  5. A high value indicates the needle will not move for a correct reading.
  6. Start the test by Zero out the multimeter. Now connect the red and black leads of the device to the pins of the ABS sensor.
  7. After connecting, check the display for resistance.

Results and Discussion

  • If you get a value of 48 ohms and your manual value is 50 ohms, then the ABS sensor is in working condition. A difference of more than 10% indicates a defective ABS sensor.
  • Replace the sensor for the proper working of the anti locking braking system.

You have done a great job!

Specifications

Resistance must be close (within 10 percent) to the reading mentioned in the ABS manual guidelines.

Conclusion

If you don’t know how to test the ABS sensor, follow the above method.

All you need is a multimeter and specification guidelines to interpret the resistance values. Most of you will be thinking using a multimeter device can be a dangerous task.

But wait, here are some easy tips, which need a multimeter to test the anti locking braking system (ABS) sensor. This interpretation indicates the working condition of the anti locking braking system. A faulty one can cause mishaps if not replaced on time.

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