lights AUDI A4 1998 B5 / 1.G Brakes Description Of Systems Workshop Manual

01-37


1 - Terminal 15
2 - Signal for controlling the ABS/EDL indicator lamp and the red "brake
system malfunction" symbol.
3 - Voltage supply for the ABS/EDL indicator lamp.
4 - Voltage supply for the red "brake system malfunction" symbol.
A - In interval "A" (with "ignition on") a self-test of the ABS/EDL indicator
lamp is carry outed for two seconds using signal "2" (lamp lights up).
During this interval, the instrument cluster suppresses the red "brake
system malfunction" symbol.
B - Signal "2" is not available in interval "B". The ABS/EDL indicator lamp
and the red "brake system malfunction" symbol do not light.
C - In interval "C", the On Board Diagnostic recognized a DTC, which did
not deactivate the EBD. Signal "2" is pulsed. Only the ABS/EDL indicator
lamp comes on.
D - In interval "D", the On Board Diagnostic recognized a DTC, which did
deactivate the EBD. Signal "2" is steady. Both the ABS/EDL indicator
lamp and the red "brake system malfunction" symbol light up.
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ASR prevents the wheels being powered from
spinning during acceleration by reducing engine
load. It is active throughout the entire speed
range. The EDL and ASR functions work in
combination during vehicle acceleration.
ASR can be switched on and off by pressing the
traction control button in the center of the center
console. ASR is re-activated on its own when the
ignition is switched on. When the traction control
button is operated, the ASR indicator lamp lights
up in the instrument cluster. During adjustment
mode, the indicator lamp blinks three times per
second.
Pa
ge 9 of 10 Descri
ption of s
ystems
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.4