Internal structure of the injection control unit
For a professional ECU, engine control unit repair A distinction is made between two groups of control units. One is constructed with a normal epoxy resin circuit board, the other consists of ceramic circuit boards and is called a hybrid control unit. The repair of the conventional ECUs is done in the soldering department. During ECU repair, new semiconductors, capacitors and resistors are installed according to OEM specifications. Unfortunately, it is not possible to replace the components of hybrid ECUs, as they are glued and encapsulated on the ceramic circuit board. The ceramic circuit board is connected to the connector via bondings. If these connections are defective, you need a special machine (ultrasonic bonding) to restore them. We show you how this works in the following video.
Diagnose the control unit beforehand
In order to avoid unnecessary effort during the ECU repair, it should be ensured by appropriate tests and diagnostic queries that the ECU is really defective and not, for example, the supply line, earth connection, plug, fuse or another ECU. Unfortunately, we cannot carry out a complete test of the control unit on the table. Our tests are limited to the assemblies that match the fault. If injector 1 is diagnosed as the fault, then we test the complete electronic control of all injectors. Therefore, a good preliminary work is indispensable for us.
Loan control unit for easy fault localisation
We offer loan engine control units for workshops. If you are not sure where the fault lies, you can contact us to see if we have a suitable loaner control unit. With this fully functional control unit, you can test whether the fault lies with the control unit or with the vehicle. These loaner control units also help us with the engine control unit repair, as we can measure them as a reference.
When is an ECU repair necessary
ECU repair is necessary when the electronics of an engine control unit have a defect. With a Engine control unit defective there are a variety of symptoms, including that the unit can no longer be diagnosed or that the existing problem cannot be rectified after checking all error-relevant external components. In addition, it can also happen that the software causes an error. Because of this complexity, it is extremely important that we receive all relevant information from you. This helps us to repair the engine control unit quickly and successfully.