A4 Sedan L4-1.8L Turbo (AWM) (2001)
Display on VAS5051:
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Determining via road test whether vehicle speed is displayed in display field -3-.
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If vehicle speed is not display, lift vehicle -if possible using a vehicle lift- until front left wheel is free.
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Connect VAG1598/31 test box at wiring harness to Engine Control Module (ECM), do not connect ECM. Refer to "Scan Tool Testing/Wire and
Component Testing Using VAG1598/31 Test Box" See: Powertrain Management/Computers and Control Systems/Testing and Inspection
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Connect VAG1527B voltage tester to sockets 3 (B+) and 54 (VSS) of VAG1598/31 test box.
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Switch ignition on and turn front left wheel by hand.
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LED must blink (very brief blink signal).
If LED does not blink:
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Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
Test box
Instrument cluster
VAG1598/31
Terminal
Socket
54
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Repair open circuit or short circuit if necessary.