TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
WARNING: To reduce the risk of accident during road tests, always observe safety precautions.
Indicated on display:
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.
Indicated on display:
Read Measuring Value Block
Q
Input display group number XXX
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Press buttons -0-, -0- and -5- to select "display group number 005" and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block 5
->
1
2
3
4
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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 displayed, 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 ECM, do not connect ECM. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Wiring and
Component Testing Using VAG1598/31 Test Box
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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+:
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Test box VAG1598/31 Socket - 54 (Instrument cluster)
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Repair open circuit or short circuit if necessary.