Jetta L4-1.8L Turbo (AWP) (2004)
Vehicles with engine code AWD
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Set multimeter for voltage measurement and connect it to terminals 1 + 2 at connector to control module.
Vehicles with engine code AWP, AWW
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Set multimeter for voltage measurement and connect it to terminals 3 + 4 at connector to control module.
Continuation for all vehicles
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Start engine, and let run at idle.
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Measure voltage supply
Specified value: oscillating between 0.0 and 12.0 V
If there is no voltage:
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Switch ignition off.
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Connect test box to control module wiring harness, connect test box for wiring test. Engine Control Module (ECM) is not connected. See:
Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool
Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
Vehicles with engine code AWD
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Check wire between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 2 + socket 5
Wire resistance: max: 1.5 Ohms