18. LIGHTS/SWITCHES                                           MXU 500EXi/MXU500i


 FUEL PUMP UNIT                                       Screw               Hose quick band

 REMOVAL

 Disconnect the connector and fuel band
 from the fuel pump.
 Remove the six screws onto the fuel pump.
 Remove the fuel pump and O-ring.
 INSPECTION
 Put the side stand up and the engine stop
 switch is at "RUN"

 Disconnect the fuel pump/fuel unit                              Fuel Pump Connector
 connector.
 Connect the multimeter (+) probe to the
 Gray terminal and the multi-meter (-) probe
 to the Gray terminal.
 Turn the ignition switch to "ON" and
 measure the voltage between the terminals.
 It should be shown the current battery                  F
 voltage for a few seconds.

 If there is still battery voltage, replace the
 fuel pump.
 If there is not any battery voltage, inspect
 the following:
  Fuse
  Fuel pump relay                                 E
  ECU
 Measure the resistance between the both
 Gray.terminals of the fuel pump side
 connector.
 Standard (at 20°C/68°F): About 10.7 
 Fuel level sensor inspection
 Measure the resistance between the Gay and
 Gray terminals of fuel pump side connector.

 Standard (at 20°C/68°F):
 Float at full position   About101
 Float at empty position  About 3 




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