A3 L4-2.0L Turbo (BPY) (2006)
Fuel Pressure Sensor/Switch: Testing and Inspection
Fuel Pressure Sensor G247 , Checking
Fuel Pressure Sensor G247, Checking
Special tools, testers and auxiliary items required
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Multimeter.
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Wiring diagram.
Test requirements
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The Fuel Pump (FP) Control Module J538 OK.
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The Motronic Engine Control Module (ECM) J220 fuses OK.
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The fuel filter OK.
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The battery voltage at least 12.5 V.
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All electrical consumers switched off (radiator fan must NOT run during test).
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A/C switched off.
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The fuel tank at least 1 / 4 filled.
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The ignition switched off.
Procedure
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Remove the engine cover with air filter.
Checking voltage
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Disconnect the Fuel Pressure Sensor G247 electrical harness connector.
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Switch the ignition on.
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Using a Multimeter , check the Fuel Pressure Sensor G247 electrical harness connector terminals for voltage.
Fuel Pressure Sensor G247
Specified value
electrical harness connector
terminal
1 to Battery positive (+)
Battery positive (+)
2 to Ground (GND)
Battery positive (+)
3 to Ground (GND)
about 5 V
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Switch the ignition off.
If the specified value was obtained:
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Replace the Fuel Pressure Sensor G247.
If the specified value was not obtained:
Checking wiring connections
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) J220.
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Using a Multimeter , check the Fuel Pressure Sensor G247 electrical harness connector terminals to the Motronic Engine Control Module (ECM)
J220 electrical harness connector T60 terminals for an open circuit according to the wiring diagram.
Fuel Pressure Sensor G247
Motronic Engine Control Module
electrical harness connector
(ECM) J220 electrical connector
terminals
T60 terminals or test box socket
1
14
2
25
3
26
Specified value: 1.5 Ohms Max.
If the specification is not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.