A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
If voltage supply is OK:
Check Ground (GND) activation
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Connect multimeter between terminal 2 and 3 of harness connector for voltage measurement.
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Operate starter briefly.
Specified value: approx. battery voltage
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Switch ignition off.
If specified value is not obtained:
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Check wire connections.
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Connect multimeter between terminal 3 and 4 of harness connector for voltage measurement.
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Switch ignition on.
Specified value: about 5 V
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Switch ignition off.
If specified value is not obtained:
Checking wire connections
NOTE: Signal wire is also checked during wire test.
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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