A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
Fuel Pressure Sensor: Testing and Inspection
Low Fuel Pressure Sensor, Checking
Low Fuel Pressure Sensor, Checking
Observe all safety precautions: => [ Safety Precautions ] See: Powertrain Management/Computers and Control Systems/Service Precautions/Safety
Precautions
View clean working conditions: => [ Clean Working Conditions ] See: Powertrain Management/Computers and Control Systems/Service
Precautions/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
‹› multimeter.
‹› Wiring diagram.
Test requirements
‹› The Fuel Pump (FP) Control Module (J538) OK.
‹› The Motronic Engine Control Module (ECM) ( J623 ) fuses OK.
‹› The fuel filter OK.
‹› The battery voltage at least 12.5 V.
‹› All electrical consumers switched off (radiator fan must NOT run during test).
‹› A/C switched off.
‹› The fuel tank at least 1/4 filled.
‹› The ignition switched off.
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
-
Remove the engine cover with air filter. Refer to appropriate service manual.
Checking voltage
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Disconnect the Low Fuel Pressure Sensor (G410 ) electrical harness connector - 2 -.