diagram AUDI A4 1998 B5 / 1.G Brakes ABS EDL Bosch 5.0 Workshop Manual

01-47

ABS
-
K47- Brake
system ASR

-
K86-
1) Possible reasons why the indicator lamps light up

If an irregularity occurs during the self test after ignition is switched on, and the warning
lamps -K47- and -K86- do not light up for 2 seconds, check the warning lamps; "Electrical
test" page 01
-68
, carry out test steps 19 and 21. The possible causes are as follows:

Electrical Wiring Diagrams, Troubleshooting & Component Locations
Repair Manual, Electrical Equipment, Repair Group 90; Instrument cluster

The battery voltage is insufficient. None of the lamps in the instrument cluster light up. Check
the battery.





X 1)
The ABS warning light does not light up during the self-test. There is a short to Ground (GND)
in the wiring that controls the ABS warning light between terminal 32 of the ABS control
module -J104- and the instrument cluster. This malfunction does not affect activation of the
ABS warning light. For vehicles equipped with ASR, the traction control indicator lamp lights up
during the self-test; "Electrical test" page 01
-68
, carry out test step 19.

X


The vehicle is equipped with ASR. The ABS warning light lights up during the self-test. The
traction control indicator light does not light up during the self-test "Electrical test" page 01
-
68
, carry out test step 21.
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