A6 Sedan V6-2.8L (ATQ) (2000)
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Connect multimeter to terminal 19 of relay socket and Ground (GND) for voltage measurement.
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Specification: approx. battery voltage
If specified value is not obtained:
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Check wire connections.
If specified value is obtained:
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Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
Central electric in driver-side footwell
VAG1598/31 test box Socket
left, position 4 Terminal
16
65
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Repair open circuit or short circuit if necessary.
If no malfunctions are detected:
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Replace Fuel Pump (FP) relay -J17-.
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Re-connect Engine Control Module (ECM).
Check voltage supply for Fuel Pump (FP) and components