Beetle L4-1.9L DSL Turbo (ALH) (1998)
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Fuel Gauge: Service and Repair
Fuel gauge, checking (adaptation)
If the fuel gauge displays the contents of the fuel tank as being too high or too low, the fuel gauge needle position in the instrument cluster can be
corrected (adapted).
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Perform Output Diagnostic Test Mode (DTM) for instrument cluster. Refer to "Output Diagnostic Test Mode (DTM) (Function 03)/Scan Tool
Testing", See: Testing and Inspection/Scan Tool Testing and Procedures/Output Diagnostic Test Mode (DTM) (Function 03)
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Check function of fuel gauge sender if Output Diagnostic Test Mode (DTM) does not indicate a malfunction:
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Check resistance value of fuel gauge sender in measuring value block. Refer to "Reading/Measuring Value Blocks" See: Testing and
Inspection/Scan Tool Testing and Procedures/Measuring Value Blocks (Function 08)
If measuring value block does not display a short circuit or open circuit in the wiring or the fuel gauge sender, continue checks:
Special tools, testers, measuring units and auxiliary items required
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Switch ignition off.
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Drain fuel tank completely using approved fuel cart, then fill with 10 liters (2.64 gal) of fuel (ensure ignition is OFF).
WARNING!
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Fire hazard. DO NOT smoke or work near heaters or have anything in the area that can ignite fuel
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Drain fuel using an approved fuel cart.
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Wear fuel-resistant gloves whenever working with open parts of the fuel system.
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Connect VAG 1551 Scan Tool (ST), select 1 "Rapid Data Transfer", switch on ignition, input address word 17 "Instrument cluster".
Indicated on display
Rapid data transfer
Q
17 - Instrument Cluster
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Press -Q- button to confirm input.
Indicated on display (example only)
1C0919951E KOMBIINSTR. M73 V24
->
Coding 02241 WSC 00000
-
Press -> button.
Indicated on display (select function):
Rapid data transfer
HELP
Select function XX
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Press buttons -1- and -0- to select function 10 "Adaptation".
Indicated on display
Rapid data transfer
Q
10 - Adaptation
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Press -Q- button to confirm input.
Indicated on display
Adaptation
Input channel number XX
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Press buttons -3- and -0- to select channel 30.
Indicated on display
Adaptation
Q
Input channel number 30
