Hyundai Genesis: Fuel Delivery System / Fuel Pump Repair procedures

Removal
1.
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
2.
Fold the rear seat cushion.
3.
Remove the fuel pump service cover (A) at both the highest (H) and lowest (L) float level.

4.
Disconnect the fuel pump connector (A) and fuel pressure connector (B).
5.
Disconnect the fuel feed tube quick-connector (C) and the suction hose (D).
6.
Remove the fuel pump plate cover (E) after loosening installation bolts, and then remove the fuel pump.

Installation
1.
To install, reverse the removal procedure.

Fuel pump plate cover installation bolt :
2.0 ~ 2.9 N.m (0.2 ~ 0.3 kgf.m, 1.4 ~ 2.2 lbf.ft)

   
When installing the fuel pump module, be careful not to get the seal-ring entangled.
Inspection
[Fuel sender]
1.
Turn ignition switch OFF and disconnect the negative (-)battery cable.
2.
Remove the fuel pump assembly.
(Refer to Fuel Delivery System - "Fuel Pump")
3.
Using an ohmmeter, measure the resistance between terminals 5 and 6 of sender connector (A) at each float level.

Pin No.
Description
1
Fuel pump (U) phase control
2
Fuel pump (V) phase control
3
Fuel pump (W) phase control
4
Ground
5
Fuel sender signal
6
Fuel sender ground

4.
Check that the resistance is within the specification.
Position
Resistance (?)
Capacity (?)
L
81.6 ~ 83.6
6
 1/2
3 ~ 5
38
H
3 ~ 5
73

   
[Main fuel sender + sub fuel sender synthesis of resistance]
Position
Resistance (?)
Capacity (?)
L
198 ~ 202
6
 1/2
107 ~ 111
38
H
6 ~ 10
73

[Fuel pump three phase coil inspection]
1.
Turn ignition switch OFF and disconnect the negative (-)battery cable.
2.
Remove the fuel pump assembly.
(Refer to Fuel Delivery System - "Fuel Pump")
3.
Using an ohmmeter, measure the resistance between terminals U-V, V-W, W-U.
4.
Check that the resistance is within the specification.

Specification: 0.09 ~ 0.13 ?

Pin No.
Description
1
Fuel pump (U) phase control
2
Fuel pump (V) phase control
3
Fuel pump (W) phase control
4
Ground
5
Fuel sender signal
6
Fuel sender ground

[Fuel Pump]
1.
Turn ignition switch OFF and disconnect the negative (-)battery cable.
2.
Remove the fuel pump assembly.
(Refer to Fuel Delivery System - "Fuel Pump")
3.
Connect the fuel pump connector and fuel pressure sensor connector.
4.
Reconnect the negative (-) battery cable.
5.
Turn ignition switch ON or perform cranking at the no-load state.
6.
Operate the fuel pump.
   
In case of cranking for a longer time at the no-load state, it may cause overheating. Perform cranking for Max. 3 seconds.
7.
Check the normal state of the fuel pump.
Fuel Tank Repair procedures
Removal 1. Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line") 2. Turn the ignition switch OFF and disconnect the negative ...

Sub Fuel Sender Repair procedures
Removal 1. Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line") 2. Fold the rear seat cushion. 3. Remove the fuel pump se ...

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