LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2007 >> S6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 5.2L - Generic Scan Tool - On Board Diagnostic (OBD) - Engine Code: BXA >> 01 On Board Diagnostic (OBD) >> Diagnosis And Testing >> Fuel Pump, Electrical Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pump, Electrical Testing

Special tools and workshop equipment required 

Test conditions 

Test sequence 

-- Remove the rear seat bench. Refer to BENCH SEAT .

-- Remove the screws -arrows- and the right locking flange.

Fig 1: Removing/Installing Cover Bolts For Locking Flange
GWWA20-0803Courtesy of AUDI OF AMERICA, LLC

-- Disconnect fuel delivery unit electrical harness connector -arrow-.

Fig 2: Disconnecting Electrical Harness Connector At Right Locking Flange
GWWA20-10018Courtesy of AUDI OF AMERICA, LLC

-- Connect a Hand held remote control (jumper) to terminal -1- of the fuel delivery unit and to vehicle battery (+).

-- Connect a jumper cable from a Electrical connector test lead set to terminal -4- of the fuel delivery unit and to vehicle Ground (GND).

Fig 3: Connecting Jumper Cable From Electrical Connector Test Lead Set To Terminal Of Fuel Delivery Unit And To Vehicle Ground (GND)
GWWA20-10084Courtesy of AUDI OF AMERICA, LLC

-- Press the Hand held remote control (jumper) switch in.

NOTE:

The Fuel Pump (FP) runs quietly. Avoid surrounding noises while testing the fuel pump.

The fuel pump should operate and an audible noise heard.

If no operating noise is heard:

-- Remove the fuel delivery unit. Refer to Fuel Delivery Unit .

-- Using a Multimeter, check the fuel delivery unit electrical terminals 1 to 4 for continuity.

Specified value: 0 ohms.

If the specified value is not obtained:

-- Check the fuel delivery unit for damage, corrosion, lose or broken terminals.

-- Check the fuel delivery unit for an open circuit, short to Ground (GND), or short to Battery (+).

-- Repair the electrical circuit as necessary.

If no malfunction is detected in electrical circuit, replace the fuel delivery unit. Refer to Fuel Delivery Unit .

Assembly is performed in the reverse order of removal.