A3 L4-2.0L Turbo (BPY) (2006)
Fuel Pressure Sensor/Switch: Testing and Inspection
Low Fuel Pressure Sensor G410 , Checking
Low Fuel Pressure Sensor G410, 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 Low Fuel Pressure Sensor G410 electrical harness connector - 2 -.
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Switch the ignition on.
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Using a multimeter , check the Low Fuel Pressure Sensor G410 electrical harness connector for voltage.
Low Fuel Pressure Sensor
Specified value
G410 electrical harness
connector terminals
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 Low Fuel Pressure Sensor G410.
If the specified value was not obtained:
Checking wiring
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 Low Fuel Pressure Sensor G410 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.