TT L4-1.8L Turbo (BEA) (2004)
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Disconnect fuses S228, S232, S234 and S243 (positions 28, 32, 34 and 43) from fuse holder.
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Initiate output Diagnostic Test Mode (DTM) and activate Evaporative Emission (EVAP) canister purge regulator valve -N80-. See: Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Manufacturer's Scan Tool/Output Diagnostic Test Mode
(DTM), (Function 03)
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Connect multimeter for voltage measurement to Ground (GND) and to one terminal of the following fuses in the fuse holder.
Fuse
Specified value at one of the terminals
S228
approx. battery voltage
S232
approx. battery voltage
S234
approx. battery voltage
S243
approx. battery voltage
If specified values are not obtained:
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Repeat test at another terminal of fuse socket.
If specified values are not obtained again:
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Check wire connections.
If no malfunctions are detected:
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Replace Fuel Pump (FP) relay -J17-.
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Re-insert fuses.