Hyundai Sonata LF Quiz
Engine Control System/Fuel System

Fuel Pump Repair Procedures

In this manual: Engine Control System/Fuel System
General Information — 9Engine Mechanical System — 90Engine Electrical System — 58Emission Control System — 24Engine Control System/Fuel System — 114Drive Shaft and Axle — 15Suspension System — 35Steering — 19Restraints — 50Brake System — 54Body (Interior and Exterior) — 213Body Electrical System — 241Heating, Ventilation, and Air Conditioning — 56DCT (Dual Clutch Transmission) System — 52
15steps
~95min
4/5difficulty
1special tools
010203040502.92N·mlb·ft
Tightening torque found on this page
Done 0 of 15

Inspection

[Fuel Sender]
  1. Turn the ignition switch OFF and disconnect the (-) battery cable.
  2. Remove the fuel pump assembly.
  3. Using an ohmmeter, measure the resistance between terminals 1 and 6 of the sensor connector (A) at each float level.
    Pin No. Description
    1 Fuel Level Sensor Ground
    2 Fuel pressure sensor (FPS) signal input
    3 CAN [High]
    4 Fuel Pressure Sensor (FPS)
    Power supply (+5V)
    5 Fuel pressure sensor (FPS) ground (-)
    6 Fuel Level Sensor Signal
    7 -
    8 CAN [Low]
    9 Ground
    10 Battery Power (B+)
  4. Also check that the resistance changes smoothly when the float moves from the "E" position to the "F" position. [Analog Cluster Type]
    Position Resistance (Ω) Capacity (?)
    E 298 ~ 305 3
    1/2 80 ~ 84 35,7
    F 14 ~ 16 68,6

    [Digital Cluster Type]
    Position Resistance (Ω) Capacity (?)
    E 298 ~ 305 3
    1/2 80 ~ 84 35,7
    F 14 ~ 16 68,6

Removal

  1. Release the fuel line residual pressure. (Refer to Fuel System - "Release Fuel Line Residual Pressure")
  2. Raise the vehicle.
  3. Support the fuel tank with a jack.
  4. Pull the fuel tank downward after loosening the fastening nut (A) appropriately.
  5. Remove the rear seat cushion. (Refer to Body - "Rear Seat Assembly")
  6. Remove the fuel pump service cover (A).
  7. Disconnect the connector (A) of the fuel pump control module.
  8. Disconnect the quick-connector of the fuel supply tube (B).
  9. Disconnect the fuel pressure sensor connector (C).
  10. Remove the snap ring (A) using the special service tool (B) [No.: 09310-B9100].
  11. Remove the fuel pump from the fuel tank.

Installation

  1. Install in the reverse order of removal.
    Be careful of the fuel pump direction (refer to the groove in the fuel tank).
    Fuel pump plate cover bolt: 2.0 ~ 2.9 N·m

Test yourself

A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.