RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
Knock Sensor: Service and Repair
Knock Sensors
Locations engine compartment
1. Intake Manifold Runner Position Sensor (G336 )
2. Intake Manifold Runner Control (IMRC) Valve ( N316)
3. "Brown" connector for Knock Sensor 4 (G199)
4. "Black" connector for Knock Sensor 3 (G198)
5. "Brown" connector for Knock Sensor 2 (G66)
6. "Black" connector for Knock Sensor 1 (G61)
Removing
CAUTION!
‹› Fuel system is under high pressure! Before opening high pressure components of the fuel injection system, pressure must be relieved
to residual pressure. Refer to => [ Before Opening High Pressure Fuel Injection System ] See: Fuel Delivery and Air Induction/Fuel
Filter/Fuel Pressure Release/Service and Repair.
‹› Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.
‹› Observe safety precautions when disconnecting the battery.
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Remove intake manifold. Refer to => [ Intake Manifold ] See: Engine, Cooling and Exhaust/Engine/Intake Manifold/Service and Repair/Intake
Manifold.
Remove the respective right cylinder bank knock sensor.