Audi A3 1997 - Page 53

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◆ When working with the fault reader, no adapter cable from test box V.A.G 1598 may be connected to op‐
erating and display unit -E87.
Required measuring and testing equipment:
- -> Test box V.A.G 1598 and the pertinent adapter cables V.A.G 1598/11 and V.A.G 1598/12.
- Handheld multimeter V.A.G 1526,
- Adapter set V.A.G 1594,
- Diode test lamp V.A.G 1527,
- Temperature sensor with appropriate tester,
Test requirements
All fuses OK in line with current flow diagram.
Connect test box adapter cables V.A.G 1598/11 and 12 to connector for operating and display unit -E87
- Switch off ignition.
- Remove operating and display unit -E87 (=>Page 174 ).
- -> Connect adapter cables V.A.G 1598/11 and 12 to the vehicle wiring harness connectors.
Notes:
◆ Do not connect operating and display unit -E87.
◆ For measurement purposes, connect test box V.A.G 1598 to the respective adapter cable.
◆ On adapter cable V.A.G 1598/12, the socket assignment is identical to the pin assignment of operating and
display unit -E87.
◆ On adapter cable V.A.G 1598/11, the socket assignment is not identical to the pin assignment of operating
and display unit -E87.
=>Pin assignment, Page 47 .
Pin assignment of test box V.A.G 1598 with adapter cable V.A.G 1598/11
Notes:
◆ With adapter cable V.A.G 1598/11, the contact assignment of connectors A and B is not identical to the
socket assignment on the test box.
◆ The pin assignment of connector C in adapter cable V.A.G 1598/11 is not identical to those of the sockets
on the test box.
◆ The pin assignment of connector D in adapter cable V.A.G 1598/12 is identical to those of the sockets on
the test box.
◆ Due to the use of two adapter cables for the connectors for operating and display unit -E87 (V.A.G 1598/11
and 12), no earth connection is possible when adapter cable V.A.G 1598/11 is connected. To perform the
Electrical checks, it is therefore necessary in various test steps to take measurements against a suitable
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
10.2 - Electrical check on operating and display unit -E87 47