TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
2. Always 51 L / 100km
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Signal wire may have an open circuit
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Switch ignition off.
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Connect test box to Engine Control Module (ECM).
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Remove instrument cluster and disconnect blue 32-pin connector from instrument cluster.
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Connect VAG1598 test box to blue 32-pin connector using VAG1598/25 adapter.
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Connect (+) test lead to VAG1598/25 socket 25 using VAG1526 multimeter.
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Connect (-) test lead to relevant test box of Engine Control Module (ECM) and the related consumption signal socket of the ECM.
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Perform resistance measurement.
Specification: display < 2 Ohm
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Connect (+) test lead to relevant test box of Engine Control Module (ECM) using VAG1526 multimeter.
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Connect (-) test lead to Ground.
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Perform resistance measurement.
Specification: display < 9 MOhm
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If specified value is not obtained, wiring connection is OK.
3. Consumption gauge indication is illogical or constantly varying consumption value
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Consumption gauge indication does not match actual fuel consumption.
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Perform adaptation of fuel consumption gauge.