TT Quattro Coupe V6-3.2L (BHE) (2005)
Fuel Pump Relay: Testing and Inspection
Fuel Pump Relay, 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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Fuse S132OK.
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Fuse S134OK.
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Battery voltage at least 12.5 volts.
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All electrical consumers such as, lights and rear window defroster, switched off.
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Vehicles with automatic transmission, selector lever in position "P" or "N".
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A/C switched off.
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Ground (GND) connections between engine/transmission/chassis OK.
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Ignition switched off.
Start diagnosis
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Using a Multimeter, check the following wiring connection for voltage.
Fuel Pump (FP) Relay
Measure to
J17 socket
17/30
Engine Ground (GND)
Specified value: 12.5 V
If the specified value was not obtained:
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Check the Fuel Pump (FP) Relay J17 socket 17/30 to the Battery A B (+) terminal for an open circuit or short to Ground (GND).
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Check the electrical harness connectors for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking voltage
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Switch the ignition on.
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Using a Multimeter, check the following wiring connection for voltage.
Fuel Pump (FP) Relay
Measure to Ignition/Starter Switch D terminal
J17 socket
22/50
1/50
19/86
6/15
Specified value: 12.5. battery voltage.
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Switch the ignition off.
If the specified value was not obtained:
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Check for an open circuit or short to Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking Ground (GND)
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Using a Multimeter, check the Fuel Pump (FP) Relay J17 socket 16/Mot to the Motronic Engine Control Module (ECM) J220 electrical harness
connector terminal 65 for resistance.
Specified value: 1.5 Ohms.
If the specified value was not obtained:
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Check the Fuel Pump (FP) Relay J17 socket 16/Mot to the Motronic Engine Control Module (ECM) J220 electrical harness connector terminal 65
for an open circuit or a short to Battery (+).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.