transmission AUDI A4 1998 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual

01-4

Continuously lit:
There is a malfunction that causes increased
emissions. Check DTC memory for Motronic
ECM and automatic transmission (if installed).
Check DTC memory if there is a driveability
problem or a customer complaint, but the
exhaust Malfunction Indicator Lamp (MIL) is not
lit. There may be DTCs stored that do not cause
the exhaust MIL to light up immediately, but only
after engine is started again and malfunction is
recognized again.

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!

Note:
Catalytic converter must be checked after
malfunction is repaired.
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01-7

VAS 5051 tester, connecting and
selecting functions


Test requirements:

Fuses for engine electronics OK

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

Fuel Pump (FP) relay OK; checking Page 24
-52
.

Battery voltage at least 12.7 V
Ground (GND) connections at engine and
transmission OK

Procedure

WARNING!
Observe safety precautions Page 01
-6 .
Note: - Connect VAS5051 tester to vehicle with VAS5051/1 diagnostic wire.
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