Do-it-yourself repair (Audi 100 C4)

Unfortunately, numerous injection system checks cannot be carried out at home due to the lack of necessary control and measuring devices. However, a certain field of activity still remains.

Procedure

The control unit cannot be checked by home means. Practice also shows that malfunctions are extremely rare on this side. If there is a malfunction, you should act as follows:

Check fuse #17 or one of the fuses in the black, brown or red holders (in the electronics unit).

Check if the ignition system is in order.

Check the fuel supply.

Conduct a visual inspection of the injection system components (see next section).

If the fault is not found in this way, look through the fault list at the end of the chapter. Or check the fault memory in the workshop. In this way, find out the possible source of the fault, check the suspicious part according to the control diagram.