Removal (Land Cruiser & LX470)
- Intake manifold must be removed for access to knock sensors. Knock sensors are located below intake manifold, on the cylinder block. See Figure-5.
- Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEM. Manufacturer recommends removing throttle body from intake manifold with hoses attached and electrical connectors installed. Drain cooling system if necessary to disconnect coolant hoses for access to intake manifold. Remove intake manifold cover located on top of engine, above the intake manifold.
- Remove air intake hose with intake air connector located between throttle body and air cleaner assembly. Disconnect accelerator cable from throttle body. Remove throttle body bolts/nuts, throttle body and gasket from intake manifold.CAUTION: Use care when disconnecting fuel inlet hose from fuel filter, as some residual fuel pressure may still exist in the fuel system.
- Depress both sides of retainer and pull fuel inlet hose with disconnect fitting from fuel filter. See Fig 1.
- Disconnect necessary electrical connectors, fuel return hose, vacuum hoses, PCV hose and wiring clamps for removal of intake manifold. Remove bolts and disconnect engine wiring harness protector from rear intake manifold. See Fig 2.
- Remove bolts/nuts and intake manifold with fuel injectors and fuel rails as an assembly. Remove gaskets for intake manifold. Disconnect electrical connectors at knock sensors. Using Socket (SST 09816-30010), remove knock sensor(s) from cylinder block.