[Previous][Next]
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 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 the scan tool (M.U.T.-IIISE), activate the fuel pump (integrated in the fuel pump module) to check the fuel pump operation.
3. 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 ignition switch to the "LOCK" (OFF) position.
(2) Remove the rear seat assembly (Refer to GROUP 52A, Rear Seat Assembly ) and turn up the floor carpet.
(3) Remove the floor inspection lid (LH).
(4) Disconnect the fuel pump module connector.
(5) Remove the fuel cap.
(6) When the battery is connected to the fuel pump module connector (fuel pump module side), check that the pump operating sound can be heard. When the pump operating sound cannot be heard, replace the fuel pump module (Refer to GROUP 13B, On-Vehicle Service - Fuel Pump Module Replacement ).
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.
(7) Install the fuel tank cap.
(8) Check for fuel pressure by pinching the fuel hose with fingertips.
(9) Connect the fuel pump module connector.
(10) Install the floor inspection lid (LH).
(11) Return the floor carpet to the original condition and install the rear seat assembly (Refer to GROUP 52A, Rear Seat Assembly ).