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FUEL PUMP OPERATION CHECK
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1. Remove the fuel tank cap.
noteThe operating sound of the fuel pump is difficult to be heard because the pump is in-tank type. Therefore, remove the fuel cap to check the sound from the fuel filler port.
2. Using scan tool (M.U.T.-III SE), forcibly drive the fuel pump (integrated in the fuel pump and gauge assembly) to check the fuel pump operation.
3. When the fuel pump drives, install the fuel tank cap.
4. If the fuel pump does not operate, follow the procedure below to check the pump for operation. If it is normal, check the driving circuit.
(1) Turn the power supply mode of the electric motor switch to OFF.
(2) Remove the second seat assembly (Refer to Body Interior - Seat, Removal and Installation, Second Seat Assembly, Removal and Installation Removal and Installation).
(3) Remove the floor inspection lid (LH).
(4) Disconnect the fuel pump and gauge assembly connector.
(5) When the battery is connected to the fuel pump and gauge assembly connector terminals No. 4 and 5 (fuel pump and gauge assembly side), check that the pump operating sound can be heard. When the pump operating sound cannot be heard, replace the fuel pump and gauge assembly (Refer to Fuel Supply - On-Vehicle Service, Fuel Pump and Gauge Assembly Replacement FUEL PUMP MODULE REPLACEMENT).
(6) Connect the fuel pump and gauge assembly connector.
(7) Install the floor inspection lid (LH).
(8) Install the second seat assembly (Refer to Body Interior - Seat, Removal and Installation, Second Seat Assembly, Removal and Installation Removal and Installation).