13. FUEL INJECTION SYSTEM Downtown 300i ABS FUEL PUMP INSPECTIION Full Position Put the side stand up and the engine stop switch is at "RUN" Disconnect the fuel pump/fuel unit connector. Connect the multimeter (+) probe to the Red/Black terminal and the multi-meter (-) probe to the Green terminal. Turn the ignition switch to "ON" and Green measure the voltage between the terminals. It should be shown the current battery voltage for a few seconds. Yellow/White If there is still battery voltage, replace the fuel pump. If there is not any battery voltage, inspect the following: Fuse B (10 A) Fuel cut-off relay ECU Measure the resistance between the Empty Position Red/Black and Green terminals of the fuel pump side connector. Standard (at 20°C/68°F): 1.90.3 Fuel level sensor inspection Measure the resistance between the Yellow/White and Green terminals of the fuel pump side connector. Standard (at 20°C/68°F): Float at full position 110033 Float at empty position 1003 13-14