TT Roadster L4-1.8L Turbo (AWP) (2003)
Testing voltage supply to fuel pump and other components
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Remove fuse Nos. S228, S232, S234 and S243 (sockets 28, 32, 34 and 43) from fuse holder.
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Start output diagnostic test mode and activate evaporative emission (EVAP) canister purge -N80-. See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan Tool/Output Diagnostic
Test Mode (DTM) (Function 03)
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For each of the following fuse positions in the fuse holder, connect the multimeter (voltage measurement range) between Ground and one of the
fuse contacts:
Fuse
Specification (for one contact)
S228
Approx. battery voltage
S232
Approx. battery voltage
S234
Approx. battery voltage
S243
Approx. battery voltage
If the specifications are not obtained:
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Repeat the test on the other fuse contact.
If the specifications are again not attained:
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Check wiring
If no fault is found:
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Install a new fuel pump (FP) relay -J17-.
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Install fuses.