A6 Sedan V6-2.8L (ATQ) (2000)
Test sequence
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Connect VAS5051 tester or VAG1551 scan tool and select the control module for engine electronics using "address word" 01. Refer to "Scan
Tool Testing/Scan Tool Connecting And Initial Checks", See: Testing and Inspection
Engine must run at idle for this.
WARNING!
Observe safety precautions to reduce the risk of accidents during road test.
When 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.
When 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
->
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 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 ECM, do not connect ECM. Refer to "Scan Tool Testing/Wire And Component Test Using
VAG1598/31 Test Box", See: 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 VAG1598/31 Socket
Instrument cluster Terminal
54
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Repair open circuit or short circuit if necessary.