A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Disconnect electrical harness connector -2-.
Checking voltage supply
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Switch ignition on.
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Connect multimeter for voltage measurement as follows.
Harness connector
Specified value
Terminal
1 + Ground (GND)
about 5 V
1 + 5
about 5 V
2 + Ground (GND)
about 5 V
2 + 3
about 5 V
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Switch ignition off.
If specified values are not obtained:
Checking wire connections
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Connect test box to wiring harness of Engine Control Module (ECM). ECM is not connected. See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Scan Tool
Connecting/Test Box, Connecting For Wiring and Component Test