A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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signal) and socket 1 (B+); the harness connector remains connected.
NOTE: Connector sockets are numbered respectively on the rear side of the connector.
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Operate starter for a few seconds.
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LED must blink.
NOTE: Voltage testers do not go out completely during low current pick-up between activations by the ECM, but rather continue to glow a little
and then get significantly brighter during activation.
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Switch ignition off.
If LED does not blink:
Checking voltage supply
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Disconnect harness connector (arrow) from Camshaft Position (CMP) Sensor -G40-.
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Connect multimeter for voltage measurement as follows:
Harness connector
Measure to
Terminal
1
Engine Ground (GND)
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Switch ignition on.
Specified value: about 5 V
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Switch ignition off.
Checking signal wire
