Audi A6 - Page 29

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♦ Test box -V.A.G 1598/42-
Note
♦ The test box -V.A.G 1598/42- is designed with 105 terminals.
It can be connected to the engine control module (ECM) via 2
different adapter cables.
♦ The Engine Control Module (ECM) is connected to the vehicle
electrical harness via a 60 pin connector and a 94 pin con‐
nector.
♦ For testing at the 60 pin connector, the adapter cable -V.A.G
1598/39-1- is connected to the test box with connector “A”.
Components of the 60 pin harness connection ⇒ Wiring dia‐
grams, Troubleshooting & Component locations.
♦ For testing at the 94 pin connector, the adapter cable -V.A.G
1598/39-2- is connected to the test box with connectors “A”
and “B”. Components of the 94 pin harness connection ⇒ Wir‐
ing diagrams, Troubleshooting & Component locations.
♦ The test box -V.A.G 1598/42- is designed so that it can be
connected simultaneously to the engine control module har‐
ness and the engine control module itself. This is advanta‐
geous because electronic engine control remains fully func‐
tional (e.g. measurement of signals with engine running) when
the test box is attached.
♦ The procedure will indicate whether the engine control module
is to remain connected to the test box or not.
♦ To connect measuring instruments (e.g. voltage tester -V.A.G
1527B- , multimeter -V.A.G 1526C- etc.) always use connector
test set -V.A.G 1594C- .
The Engine Control Module (ECM) must be removed to discon‐
nect the ECM harness connectors ⇒ page 41 .
Caution
To avoid damaging electronic components, set measuring
range before connecting test leads and observe all test re‐
quirements.
Audi A6 2005 ➤
Fuel Injection and Ignition - Edition 03.2008
4. Diagnosis and Testing 25