RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
If the specified value was obtained:
Checking voltage
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Switch the ignition on.
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Using a Multimeter , check the Fuel Metering Valve 2 N402 electrical harness connector terminal 1 to Ground (GND) for voltage.
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Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained:
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Check the wiring from the Fuel Metering Valve 2 N402 electrical harness connector terminal 1 to the Engine Component Power Supply Relay
J757 terminal 2/87 for a short circuit to Ground (GND), or an open circuit.
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking wiring connections
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Engine Control Module (ECM) 2 J624.
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Using a multimeter , check the Fuel Metering Valve 2 N402 electrical harness connector terminal 2 to the Engine Control Module (ECM) 2 J624
electrical harness connector T60a terminal 35 for an open circuit.
Fuel Metering Valve 2 N402
Engine Control Module (ECM) 2
electrical harness connector
J624 electrical connector T60a
terminal
terminal or test box socket
2
19
Specified value: 1.5 Ohms Max.
If the specification was not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND), or an open circuit.