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1.7 - Testing engine speed sender -G28
Note:
◆ The engine speed sender is a combined speed sender and reference mark sender. Without a signal from
the -G28 the engine cannot be started. If the signal from the -G28 fails while the engine is running, the engine
will cut out immediately.
Testing engine speed sender
Fitting location of sender and connector
.
- Before carrying out the test, make sure that the sender is correctly installed and firmly seated.
- Unplug connector for engine speed sender (grey connector).
- -> Connect hand-held multimeter V.A.G 1526 (resistance test range) to contacts 2 and 3 on connector for
engine speed sender using test lead from V.A.G 1594.
Specification: approx. 730...1000 ω
Note:
The resistance value for the engine speed sender is based on a temperature of 20 °C.
The resistance increases as the temperature rises.
If the specification is not attained:
- Fit a new engine speed sender.
If the specification is attained:
- -> Connect hand-held multimeter V.A.G 1526 (resistance test range) between contacts 2 and 1 (earth) and
between contacts 3 and 1 (earth).
Audi A8 1994 ➤
Motronic injection and ignition system (6-cylinder) - Edition 02.1999
1.7 - Testing engine speed sender -G28
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