Kia Cadenza: Fuel Delivery System / Fuel Pump Repair procedures

Kia Cadenza YG 2016-2025 Service Manual / Engine Control / Fuel System / Fuel Delivery System / Fuel Pump Repair procedures

Inspection

[Fuel pump]

1.	Turn the ignition switch OFF, and then remove battery (-) cable.

2.	Remove the fuel pump assembly.

Check that motor operates properly when applying battery voltage to terminals 2 and 4 of fuel pump connector (A).

Pin No.	Description
1	Fuel sender signal
2	Fuel pump motor (+)
3	Fuel sender ground
4	Fuel pump motor ground

[Fuel sender]

1.	Turn the ignition switch OFF, and then remove battery (-) cable.

2.	Remove the fuel pump assembly.

Using an ohmmeter, measure the resistance between terminals 1 and 3 of sender connector (A) at each float level.

Pin No.	Description
1	Fuel sender signal
2	Fuel pump motor (+)
3	Fuel sender ground
4	Fuel pump motor ground

Also check that the resistance changes smoothly when the float is moved from "E" to "F".

[ Analog cluster type]

Posion	Resistance (Ω)	Capacity (ℓ)
E	198 ~ 205	5
1/2	65 ~ 67	37.5
F	7 ~ 9	67

[Digital cluster type]

Posion	Resistance (Ω)	Capacity (ℓ)
E	198 ~ 205	5
1/2	72.7	35
F	7 ~ 9	67

Removal

1.	Release the residual pressure in fuel line. (Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line").

2.	Remove the floor mat after open the trunk.

3.	Remove the fuel pump service cover (A) in the trunk.

4.	Disconnect the fuel pump control module & fuel pump extension connector (A).

5.	Disconnect the fuel feed tube quick-connector (B).

6.	Disconnect the fuel tank pressure sensor connector (C).

7.	Disconnect the fuel tank tank pressure sensor connector (D).

8.	Remove the fuel pump plate cover (E) after removing the bolts.

9.	Remove the fuel pump from the fuel tank.

Installation

Install in the reverse order of removal.

Be careful of fuel pump direction (Refer to the groove in the fuel tank).

Fuel pump plate cover installation bolt :

2.0 ~ 2.9 N.m (0.2 ~ 0.3 kgf.m, 1.4 ~ 2.2 lb-ft)

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