The typical problem of these ECUs and that after a few years the car goes to two cylinders, for lack of current to a coil from the control unit.

Before proceeding with the repair we need to understand if the problem is resolved, so you have to take a measurement with the tester.

Place the tester on "continuity", apply the red cap of the screw in the unit and the first black to pin 38 and the pin 10 of the ECU. See photos.

In the case where the controller presents the defect classic "misfire of a coil" and the value of the two measurements proves equal is not possible to perform the repair due to the rupture of one or both of the components indicated in the picture.

When the two values are different (eg: 470 and 850) it is possible to perform the repair.It 'a good idea in any case, check the presence of traces of coal also other track to avoid the car returns back after a short time.The value of the measurements after repair must be between 400 ohms and 750 ohms and must be more or less equal on both the pin (eg. 470 and 488).E 'can now start the opening of the unit as shown in the accompanying video.As you may have figured out this anomaly depends on the higher impedance of one of the two outputs, so after you have found the exit with greater resistance to repair on it as follows.repairMany people for this repair making an additional connection between the mass of the control unit and the condenser which is located on the track in question.

However latter 'involves great patience and duration of the operation and the equipment for the job.With the method we're going to look we would not need any special equipment except a good magnifying glass.

in fact, following the track of the faulty channel to a certain point is known as a kind of interruption (as a hair).To see more of the picture you can enlarge it to your liking with the zoom function.NB The photo above is of a unit in perfect condition

The imperfection that there can be eliminated by scraping gently using a pin Sewing or a pointed tool suitable for the purpose.

At this point, carried out the measurement again and you will see that the value will drop and become more or less identical.

Repair finished.

With a little practice this is done in less than 5 minutes, remember to seal the lid of the unit.