Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car

Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
- System of ignition
   Various systems of ignition
   Principle of work of ignition
   Executive body
   System "brain"
   Impulses for the control unit
   Regulation on a detonation
   Security measures during the work with system of ignition
   Repair of system of ignition
   Diagnostics of system of ignition
   Ignition distributor
   Sensor of detonation combustion
   Elements of high voltage
   Replacement of spark plugs
   Spark plugs
   Check of the moment of ignition
+ Lighting
+ Signaling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications

Check of the moment of ignition

The ignition moment, actually, in electronically the operated systems of ignition Audi 80 cannot get off. But nevertheless the workshop within the test of the mode of idling and the test for toxicity of the fulfilled gases controls including installation of ignition. For this purpose it is necessary to interview memory of the store of malfunctions first of all. Then the control unit of system of ignition has to be given to the main installation. It also becomes the device for reading of memory of the store of malfunctions.

There is no sense independently to correct installation of ignition if before it the store of malfunctions was not interviewed. As our control units are self-training, they can carry out necessary specification of installation of ignition, for example, if there is no signal of one of sensors. Before to change something in installation of ignition, it is necessary to be sure that installation of ignition was not spoiled by some failure in system.
The aforesaid is applicable to so-called main adjustment by the device of reading of memory of the store of malfunctions V.A.G. 1551. Until the control unit was not given to the main installation, the correct adjustments cannot be carried out. For this reason it is necessary to address in the workshop Audi. There will carry out control on the indicators given below.

Adjusting data

The table shows one test and one established indicators of adjustment of ignition that it is necessary to understand as follows: at express control are guided by the bigger admission of a test indicator. If adjustment anyway is required, it has to be made thoroughly, is whenever possible approximate to the established indicator.

Engine Marking	2,0 l / 66 kW ABT	2,0 l / 85 kW ABK	2,3 l / 98 kW LG	2,6 l / 110 kW ABC	2,8 l / 128 kW AAH
Test indicator	4 — 8 ° to VMT	4 — 8 ° to VMT	13 — 17 ° to VMT	7 — 27 ° to VMT	-*
The established indicator	6 ±1 ° to VMT	6 ±1 ° to VMT	15 ±1 ° to VMT	-*	-*

* there are no data

Hint: the switch of a signal of idling and the sensor of detonation combustion influence the car ignition moment with the corresponding equipment. The faulty sensor of detonation combustion can be distinguished on the fact that the ignition moment after short-term pressing a pedal of an accelerator is late at least on 10 °.