A6 Sedan V6-2.8L (ATQ) (2000)
Malfunction Indicator Lamp: Testing and Inspection
Malfunction Indicator Lamp (MIL), Checking
Special Tools and Equipment
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VAG1594A
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VAG1598/31
Function test of warning lamp
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Switch ignition on.
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Warning lamp for On Board Diagnostic (Malfunction Indicator Lamp -MIL-) must light up
A - Warning lamp for On Board Diagnostic (Malfunction Indicator Lamp -MIL-) does not light up
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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", Under "Powertrain Management", See: Testing and Inspection
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Bridge sockets 1 and 47 of test box.
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Switch ignition on.
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Warning lamp must light up.
If warning lamp does not light up:
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Switch ignition off.
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Remove instrument cluster.
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Check the following wire connection for open circuit and short circuit to B+:
Test box VAG1598/31 Socket
Instrument cluster Terminal
47
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Repair open circuit or short circuit if necessary.