A4 Quattro Wagon V6-3.0L (AVK) (2002)
Vacuum Pump: Initial Inspection and Diagnostic Overview
VAS5051 Diagnostic System or VAG1551 Scan Tool, Functions
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VAS 5051 Vehicle diagnostic, testing and information system or VAG 1551 scan tool, connecting and selecting functions
Test requirements:
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Battery voltage at least 11 V
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Ground connections on engine and transmission OK.
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Engine off
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Automatic transmission in position "P" or "N"
Procedure
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Connect up vehicle diagnostic, testing and information system VAS 5051 with diagnostic cable VAS 5051/1 with the ignition switched off.
Alternatively, connect V.A.G 1551 scan tool with diagnostic cable VAG 1 551 /3A.
Note: The following describes self-diagnosis using the V.A.G. 1551 only scan tool.
When using the VAS 5051 vehicle diagnostic, testing and information system, follow the procedures described in equipment's operating
instructions.
Indication on display:
1) appears alternately
Note: If the display remains blank:
Refer to Scan tool operating instructions
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Switch the ignition on.
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Switch on the scan tool printer with the print key. The indicator lamp in the key must light up.
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Press key 1 for"Rapid data transfer".
Indicated on display:
Note: Address word 00 is used to start the automatic test sequence i.e. interrogation of fault memories in all vehicle systems with self-diagnosis
capability in vehicle with rapid data transfer.