22. FUEL INJECTION SYSTEM                                 MXU 500i



 FUEL PUMP

 INSPECTIION

 Put the side stand up and the engine stop
 switch is at "RUN"

 Disconnect the fuel pump/fuel unit
 connector.                                           F
 Connect the multimeter (+) probe to the Red
 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
 voltage for a few seconds.                       E

 If there is still battery voltage, replace the
 fuel pump.
 If there is not any battery voltage, inspect
 the following:
  Fuse
  Fuel pump relay
  ECU

 Measure the resistance between the Red and
 Black 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 red
 and blue terminals of the 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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