How to install anti lock braking system

You may need to lift the vehicle and remove some plastic covers, panels or other components to locate the ABS module. You may be able to remove the ABS module from the vehicle as a complete unit or remove only the electrical module while the solenoid block remains attached to the vehicle. Step 2: Move onto part 3 or part 4. Skip to part 4 if you only need to remove the module and not the solenoid block and motor.

If the ABS module, solenoid block, and the motor will be removed as a complete unit, move onto part 3. Step 1: Release brake line pressure. Some vehicle will have high pressure contained within the ABS unit. If this is the case with your vehicle, refer to the specific repair manual for your car to determine the correct methods for releasing the line pressure. Step 2: Disconnect the electrical connector from the module.

The connector will be large and have a retaining mechanism. Step 3: Remove the brake lines from the module. You will need the appropriate size line wrench to remove the lines without rounding them. Once you have completely unthreaded all the lines from the block, pull up on them to remove them. Step 4: Remove the ABS module with the solenoid block. Unbolt whatever bracket or bolts are used to mount the ABS module and solenoid block to the car.

Step 5: Remove the ABS module from the solenoid block. Remove the bolts that attach the module to the solenoid block. Gently pry the module from the block. Step 6: Skip to part 6. Step 1: Disconnect the electrical connector from the module. Step 2: Remove the module. Step 1: Install the module onto the solenoid block. Gently guide the module onto the solenoid block.

Step 2: Start threading the bolts by hand. Before tightening any of the bolts, start threading them by hand. Ensure that they are snug before applying the final torque.

Step 3: Connect the electrical connector. Push the electrical connector on. Use the locking mechanism to firmly attach and secure it to the module. Step 4: Program the new module to the car. Step 1: Install the module to the solenoid block. This step is only necessary if the new module is supplied separately from the solenoid block.

Step 2: Install the ABS unit onto the car. Bolt the unit to the car as necessary. Step 3: Start the threads of the brake lines. Cross threading of the brake lines is a very real possibility that can lead to major problems. Be sure to gently start each brake line by hand before using a wrench or applying the final torque. Step 4: Torque all the brake lines. Make sure all the brake lines are tight and the flare end is firmly seated as you tighten the brake lines.

Sometimes, this can be an issue. If it is, you will need to remove the leaking brake line and take a closer look at the flared end.

Step 5: Connect the electrical connector. Step 6: Program the new module to the car. Step 7: Bleed the brake lines. Most of the time, you can bleed the brake lines at the wheels. Some vehicles will have elaborate bleeding procedures that will need to be followed. Replacing an ABS module is a varied repair — on some vehicles, it can be very straightforward and simple while it is arduous and complicated on others.

The complications can occur in the programming to the vehicle, the bleeding procedures, or the installation in cases where all the brake lines need to be removed. Sometimes, the module is mounted in spots that require the removal of other components in order to access the ABS unit. Since brake systems span from the front to the rear of the car and on both sides, an ABS unit can be installed almost anywhere on a car.

If you're lucky, it will be easily accessible and you will need to replace only the electrical portion of the ABS unit instead of having to do extensive disassembly, programming, and bleeding. Get a certified technician from YourMechanic to perform an inspection and diagnose the problem. Our certified mobile mechanics perform over services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools.

Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair. Service Location. Note : Not all ABS modules require the brake lines to be removed. This depends on the manufacturer of the car you are working on. Other than the removal of the brake lines, the procedures for replacing an ABS module are virtually the same. Tip : For this step in the ABS module replacement procedure, refer to the manufacturer's instructions to find the specific programming procedure.

At times, there will also be a written description that can be very useful. Tip : The ABS module has many metal brake lines connected to it. The module itself is bolted to the solenoid block and will need to be separated from it. Note : Remember the ABS module will be bolted to a solenoid block that has many brake lines connected to it. Tip : On some vehicles, you can get away with removing the module from the solenoid block while the solenoid block is still bolted to the car.

Other vehicles may require the two components to be replaced as a unit. This is dependent on how well you can access it and how the new module is sold. Part 3 of 6: Remove the module and solenoid block as a unit Step 1: Release brake line pressure. Each manufacturer uses different mechanisms to retain connectors.

Tip : Be sure to mark the lines before removing them to ensure that you can reconnect them in their original positions. This configuration will greatly depend on the make and model of car you are working on. This may require the use of a flat head screwdriver. Be sure to be gentle and patient. Note : The removal of the module from the solenoid block is not always necessary as it depends on how the new unit is supplied to you.

Sometimes, it is sold as a complete unit with solenoid block, module, and motor. In some cases, the lines will be too short. You can either purchase new lines or fabricate lines with a brake line bending tool and a flair tool. Install the front brake lines in the section of the master cylinder that is serviced by the larger of the two brake fluid reservoirs.

Bleed all the brakes to remove trapped air. Have an assistant pump the brakes and then hold steady pressure on the pedal. Open the bleeder valve with a wrench, then close the valve after the air has escaped. Have the assistant follow the same procedure and open the valve. Continue this process until there is no air present and only clean brake fluid exits the valve.

Jack Hathcoat has been a technical writer since His work includes instruction manuals, lesson plans, technical brochures and service bulletins for the U.