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A80 Pro Intelligent Diagnosis System
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Audi's V6 engine uses the MPFI multi-point fuel injection system, and its self-diagnostic system
has 30 different faults stored in the microcomputer. Its characteristics are:
If the fault exists for more than a certain amount of time, the fault is stored in the memory in a
stable form.
If a failure occurred during a certain period of time, the fault is considered to be a sporadic fault,
and if the engine is started 50 times and the fault still does not occur again, the occasional fault will be
automatically cleared.
After turning off the ignition switch 150 minutes, the microcomputer enters the self-holding
stage, if the fuel injection and ignition system is repaired during this period, then the fault code that
has been stored should be recalled and removed.
Chrysler Automotive Fault Self-Diagnostic System
Chrysler Automobile's electronic control system is referred to as SBEC. When a car fails, the
corresponding fault information is stored in SBEC in the form of code.
Each time the ignition switch is turned on, the “CHECKENGINE” indicator will flash for a few
seconds to indicate that the indicator is working properly. If the SBEC receives an abnormal signal
from various sensors or does not receive the signal at all, the instrument panel The “CHECK
ENGINE” indicator will illuminate, indicating that the engine is faulty and needs to be serviced.
The method of entering the self-diagnosis state is to switch the ignition switch three times within
five seconds, that is, ON→OFF→ON→OFF→ON, at this time, the “CHECKENGINE” indicator on
the instrument panel will flash, thereby displaying the stored the fault code. The fault code is cleared
by using the dedicated instrument DRBII to clear the fault code. If there is no DRBII, the ignition
switch can be turned ON/OFF 50 times and the fault code is cleared.
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