Td4
The fuel system on Td4 vehicles features a single fuel pump. The low pressure pump is mounted in the RH rear wheel arch, and delivers diesel fuel to the high pressure FIP. For more information on the Td4 fuel system, refer to the FUEL DELIVERY SYSTEM - TD4 of the System Description and Operation Workshop manual.
K Series and KV6
The electric fuel pump is mounted in the plastic fuel tank, and supplies fuel at a constant pressure to the fuel rail via a filter. The fuel rail distributes fuel equally to each of the four injectors. The system also incorporates a spill return line, which returns any unused fuel back to the tank.
For more information on the K Series and KV6 fuel systems, refer to the Fuel Delivery System - K Series 1.8 and Fuel Delivery System - K Series KV6 of the System Description and Operation Workshop manual.
General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3, fuse 10, and the main relay (C0632) on an R wire. All are located in the engine compartment fuse box.
Operation of the main relay (C0576) is controlled by the Engine Control Module (ECM) (C0603) on a WK wire. For more information on main relay operation, refer to ENGINE MANAGEMENT SYSTEM of the System Description and Operation Workshop manual.
Fuse 10 (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire.
Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on an N wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0028) to fuse 22 of the passenger compartment fuse box (C0588) on a G wire.
Fuse 22 (C0580) provides an ignition feed to the ECM (C0603) on a W wire.
Inertia Switch
Fuse 10 of the engine compartment fuse box (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. The inertia switch is a normally closed switch. If the inertia switch hasn't been tripped, current flows across the switch (C0123) to the fuel pump relay (C0575) on a GU wire.