Q7 Quattro V8-4.2L (BAR) (2008)
Specified value: 450 to 1000 ohms.
If the specified value was not obtained:
-
Replace the Fuel Metering Valve (N290).
If the specified value was obtained:
Checking voltage
Switch the ignition on.
-
Using a Multimeter, check the Fuel Metering Valve (N290) electrical harness connector terminal 1 to Ground (GND) for voltage.
-
Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained:
-
Check the wiring from the Fuel Metering Valve (N290) 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.
-
Check the electrical harness connector for damage, corrosion, lose or broken terminals.
-
If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking wiring connections