Citroen C4 Spacetourer - Repair abs pump

How does an ABS block work?

The ABS block: a Bosch invention

It was Bosch that designed an early electronic ABS system in the late 1970s. The principle of the ABS system is rather well understood by the general public since it simply prevents the wheels from locking when the driver abruptly presses the brake.

Focus on the ABS system

Before explaining the ABS block, it is important to understand the ABS system in its entirety. We distinguish for the vehicle Citroen C4 Spacetourer ...

• The wheel speed sensors: there are 2 types, namely the active sensors operating through electronics, which are supplied via a voltage defined by the ABS computer and passive sensors.
• The ABS block: let's see in more detail the elements that make it up below...
• The magnetic targets: they generate signals read by the sensors, which transmit these signals to the ABS ECU.

The ABS block

Let's look at the non-exhaustive structure of the ABS block due to the car manufacturer Citroen C4 Spacetourer ...

The hydraulic unit

It consists of several elements including:

• Solenoid valves that allow limiting the brake pressure for each wheel.
• Electronic brakeforce distribution, which is an additional function managed by the ECU.
• Pressure accumulators, which are none other than pressurized gas reservoirs used to provide a large flow rate for a fairly short time.

The hydraulic motor

This is an organ that transforms a flow rate into rotational speed and a pressure into operating torque. The motor's rotational speed is proportional to the flow rate that feeds it.

The ECU

This is the part that collects information from the brake pedal.

The Citroen C4 Spacetourer ABS block replacement

How do you know if an ABS block has failed?

It is very often one or the other reason: The car lacks stability on icy roads, a problem of an electrical nature.

What does Diag-Engine offer?

Diag-Engine is a French company that has largely proven itself regarding its automotive expertise. Therefore, you will not find new ABS blocks at Diag-Engine.

What is the procedure?

The method of operation is extremely simple. You select the make of your vehicle, then the model and then the brand of ABS block that corresponds to it. All you have to do is to proceed to the purchase and send to Diag-Engine your broken ABS block.

As soon as we receive your part, we will take care of its repair and ship it to you 48 hours later.

Do not hesitate to contact us, a technician will help you.

You can find the contact information of Diag-Engine workshop in the footer of the website.

They trusted us

• Thank you for your fast and efficient service. The fault is gone. The CT validated.
• When I received the ABS block for my Citroen C4 Spacetourer , I mounted the part myself. I was afraid to start, but ... oh joy! no more ABS light!"
• The Abs block is now reassembled and the brakes work as before!"

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