Audi A4

since 1994 release

Manual of the car

Way of action

Unfortunately, many types of checks are inaccessible to the fan due to the lack of the necessary control devices. Nevertheless nevertheless there is a certain field for activity.

The control unit cannot be checked amateur means. But also in practice in this area defects arise seldom. Incomparably more often the reason for claims is given by sensors, switches and connections of wires.

Therefore at emergence of defect it is recommended to work as follows:

• Whether as it should be all safety locks which are connected with injection (No. 28, 29, 32 and 34)?
• Make sure that ignition as it should be.
• Check fuel supply.
• Carry out a visual inspection of knots of system of injection.

• If as a result of the listed checks the source of malfunctions is not found, study at the end of this chapter the section Help at malfunctions, reveal possible sources of malfunctions, check suspicious knot according to the instruction.
• If it did not result in success, consider in a workshop the control unit computer within diagnostics of the car. But it is possible only in case before the accumulator was not disconnected. Otherwise information in the memory device is completely erased.