Fuel Pump Relay

Fuel Pump Relay

The fuel pump relay coil (C0730) receives a feed from the energised main relay (C0063) on an NO wire. If the ECM (C0658) has received the correct re-mobilisation signal from the antitheft alarm ECU, it provides an earth path for the fuel pump relay coil (C0730) on a UP wire.

The energised fuel pump relay (C0730) is now able to provide a feed to the fuel pump (C0114 on 90 models, C0115 on 110 vehicles, C2063 on 130 vehicles) on a WP wire. The fuel pump (C0114 on 90 models, C0115 on 110 vehicles, C2063 on 130 vehicles) is earthed on a B wire.

Fuel Tank Sender Unit

The fuel tank sender unit (C0114 on 90 models, C0115 on 110 vehicles, C2063 on 130 vehicles) is provided a feed by the energised fuel pump relay (C0730) on a WP wire. The output voltage supplied by the sender to the instrument pack (C1061) on a GB wire varies in relation to fuel level. The sender unit (C0114 on 90 models, C0115 on 110 vehicles, C2063 on 130 vehicles) is earthed on an SB then B wire.

For more information on fuel gauge operation, refer to the Instruments section of this manual.  INSTRUMENTS.