TT Coupe L4-1.8L Turbo (ATC) (2001)
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Fuel Gauge Sender: Testing and Inspection
Fuel Consumption Signal, Testing
Fuel Consumption Signal, Testing
Special tools and equipment
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VAG1526 multimeter
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VAG1598 test box with VAG1598/25 adapter
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VAG1594 connector test kit
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Test box for relevant Engine Control Module (ECM)
Scan Tool (ST) and test equipment safety precautions
WARNING:
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Due to weight, size and need for manual operation of test instruments while vehicle is driven on public roads, instrument must be used
only with a Driver operating the vehicle and an Instrument Operator operating the test equipment.
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Do not use Instrument with Driver only. Always use two persons to conduct test.
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Do not place Instrument on lap of Driver or front seat passenger because emergency stop may dislodge Instrument and cause airbag
deployment with risk of injury to Instrument Operator.
Use of Instrument in Audi TT Coupe:
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Place Instrument in rear seating area and secure by available safety belt.
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Instrument Operator must be seated in the other rear seating position, after sliding front passenger seat and moving the seat back as far
forward as possible. Do not activate the seat back release lever.
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Instrument Operator must wear safety belt. Use of Instrument in Audi TT Roadster:
Use of Instrument in Audi TT Roadster:
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Use only Instrument VAG 1551 Scan Tool (ST). DO NOT USE VAS 5051.
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Before test, deactivate passenger's airbag using key operated switch in glove compartment.
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Instrument Operator must be seated on passenger seat with safety belt worn.
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Place Instrument in foot well in front of passenger seat in a manner allowing the Operator to use the Instrument in a safe manner.
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After completion of test, re-activate front passenger airbag.
CAUTION: To prevent damage to electronic and electrical components, note the following:
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Always switch off the ignition before connecting or disconnecting test instruments.
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During some of the tests the control module may identify and record DTCs. The Diagnostic Trouble Code (DTC) memory should
therefore be checked and (if necessary) erased after completing the tests and any repair work that may be required.
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Start engine and perform road test. Observe consumption display in instrument cluster
What is indicated in consumption display?
1. Always 0.0 L / 100 km
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Signal wire may have a short circuit to Ground
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Switch ignition off.
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Connect relevant 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.
