A3 L4-2.0L Turbo (CBFA) (2008)
Fuel Pressure Sensor/Switch: Testing and Inspection
Fuel Pressure Sensor, Checking
Fuel Pressure Sensor, Checking
Observe all safety precautions.
View clean working conditions.
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
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) J623 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.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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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 electrical
Specified value
harness connector terminals
1 to Battery positive (+)
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