air condition AUDI A8 1999 D2 / 1.G ATQ Engine Motronic On Board Diagnostic Workshop Manual

01-3

Malfunction Indicator Lamp (MIL),
significance

If the ECM recognizes malfunctions that lead to a
degradation of emissions values, it indicates
them by lighting the Malfunction Indicator Lamp
for exhaust.

Installation position of exhaust MIL
Note:
The Malfunction Indicator Lamp (MIL) can blink or remain lit continuously.
DTC memory should be checked in both cases Page 01
-15
.
Blinking: There is a malfunction that causes damage to the catalytic
converter in this driving condition (e.g. combustion misfire). In this
case, vehicle must only be driven at reduced power! Continuously lit: There is a malfunction that causes increased
emissions. Check DTC memory for Motronic ECM and automatic
transmission (if installed). If there are driveability problems or if there is a customer complaint
and the exhaust MIL is not lit, DTC memory must be checked. There
may be DTCs stored that do not cause the exhaust MIL to light up
immediately, but only if malfunction is recognized again after repeated
engine starts.
Pa
ge 3 of 19 Motronic, On Board Dia
gnostic
(OBD
)
11/23/2002 htt
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