A4 V6-3.0L (AVK) (2004)
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Fuel Pump (FP) relay (position 1, at 9-pin relay carrier in driver's footwell, left) must trigger and Fuel Pump (FP) must run.
A - If Fuel Pump (FP) runs:
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Check voltage supply of Fuel Pump (FP) relay.
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Checking activation of Fuel Pump (FP) relay.
B - If Fuel Pump (FP) does not run:
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Check voltage supply for Fuel Pump (FP) and components (via Fuel Pump -FP- relay).
Check Voltage Supply Of Fuel Pump (FP) Relay
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Remove Fuel Pump (FP) relay.
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Connect multimeter for voltage measurement as follows.
9-pin relay carrier in driver's
Measure to
footwell, left side, position 1
Terminal
1
Chassis Ground (GND)
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Specified value: approx. battery voltage
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Connect multimeter for voltage measurement as follows:
9-pin relay carrier in driver's
Measure to
footwell, left side, position 1
Terminal
3
Chassis Ground (GND)
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Switch ignition on.
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Specified value: approx. battery voltage
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Switch ignition off.
If specified values are not obtained:
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Check wire connections for open circuit according to wiring diagram:
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Specified value: Wire resistance max 1.5 Ohm
If specified values are obtained:
Checking activation of Fuel Pump (FP) relay
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Remove cable bridge.