Citroen C4 AirCross - Repair abs pump

Understanding the Purpose of the ABS Block

What is the purpose of the ABS block?

The ABS has been mandatory in Europe since 2003. It works through sensors, an ECU and a hydraulic control system. The acronym ABS comes from the German "Antiblockiersystem". It is an anti-lock wheel system that keeps the vehicle under control when sudden braking occurs.

The ABS system to keep control of the car

The ABS block is part of the overall ABS system. We can notice for the car manufacturer Citroen C4 AirCross ...

• The magnetic targets: they are, depending on the vehicle models, integrated into the wheel bearings.
• The wheel speed sensors: there are 2 types, namely the active sensors that are connected to the ABS ECU via a cable and passive sensors.
• The ABS block: more details below.

The ABS block

Let's see the partial composition of the ABS block of the Citroen C4 AirCross car:

The ECU

As soon as a wheel tends to lock, it governs the solenoid valves and the hydraulic pump.

The hydraulic unit

It is made up of several components including:

• A hydraulic pump that locks the brake pedal so it doesn't dig in.
• Pressure accumulators which are pressurized gas reservoirs used to provide a large flow rate for a fairly short time.
• Solenoid valves which eliminate the need for a brake compensator.

Hydraulic motor

It uses the flow of oil that is pushed into the hydraulic circuit by a hydraulic pump and transforms it by a rotary motion to drive another device such as for example the gearbox or another pump, etc.

How to replace Citroen C4 AirCross ABS block

Main manifestations of ABS block HS

The origins of it are various and those that appear most of the time are... The car is unstable in wet driving conditions or the brake pressure regulation is not done properly.

What does the company Diag-Engine.fr offer?

Diag-Engine is a company located in the department of Eure for many years and expert in the reconditioning of the ABS block of the brand Citroen C4 AirCross and others. So you will not be able to buy new ABS blocks from Diag-Engine.

What is the procedure?

As soon as we receive your part, we will take care of its replacement and send it back to you 2 days later.

The operating principle is extremely simple: you choose the brand corresponding to your vehicle, then the model and finally the name of the manufacturer of the ABS block that corresponds to it. Then you just have to order and ship us your defective ABS block.

The address to which you have to send it is indicated in the footer.

Don't find the reference? Write to us and we will assist you.

Some customer reviews

• Very responsive and fast service. Just 8 days between shipping and return colissimo after repair.
• Thank you for your fast and efficient service.The ABS light on disappeared. The CT could be favorable.
• I was given a quote of 1000 € to replace my ABS block. With Diag-Engine, I got it for only 400 €. Super thank you!"

Go to a French company known for its know-how.