MOT No. 6
The moment of ignition, in fact, in the electronically controlled ignition systems of the Audi-100 cannot go astray. The workshop also controls the ignition system as part of the idle test and the exhaust gas toxicity test. To do this, you must first interrogate the memory of the fault drive. Then the control unit of the ignition system must be brought to the main installation. This is also done by the fault memory reader. It makes no sense to correct the ignition installation yourself if the fault memory has not been interrogated before. Since our control units are self-learning, they can carry out the necessary correction of the ignition setting, for example, if there is no signal from one of the sensors. Before changing anything in the ignition installation, you need to be sure that the ignition installation has not been spoiled by some kind of failure in the system.
The above applies to the so-called basic adjustment with the VAG 1551 fault memory reader. As long as the control unit has not been brought to the basic setting, correct adjustments cannot be made. That is why it is necessary to contact an Audi workshop. They will be monitored according to the indicators below.
Adjustment data
The table shows one test and one set ignition adjustment indicator, which should be understood as follows: during express control, they are guided by a larger tolerance of the test indicator. If in any case an adjustment is required, this should be done thoroughly, as close as possible to the set value.
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Hint: The idle light switch and the knock sensor affect the ignition timing of a vehicle with the appropriate equipment. A faulty knock sensor can be recognized by the fact that the ignition timing is at least 10°too late after briefly pressing the accelerator pedal.
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