Kia Stinger CK Quiz
Engine Control System/Fuel System

Fuel Pump Control Module (FPCM)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 27Engine Mechanical System — 47Engine Electrical System — 19Emission Control System — 12Engine Control System/Fuel System — 51Automatic Transmission System — 34All-Wheel Drive (AWD) System — 7Drive Shaft and Axle — 15Suspension System — 25Steering — 8Restraints — 19Brake System — 22Body (Interior and Exterior) — 47Front Seat Belt — 63Body Electrical System — 99Windshield Wiper/Washer — 11Heating, Ventilation, and Air Conditioning — 32
13steps
~78min
3/5difficulty
Done 0 of 13

Description and Operation

Description

Installed on the right side of the fuel tank, the Fuel Pump Control Module (FPCM) controls the DC motor installed inside the low pressure fuel pump.

The module compares the real-time fuel pressure information measured by the Fuel Pressure Sensor (FPS) with the target fuel pressure information provided by the ECM, and creates the desired target fuel pressure by controlling the fuel pump motor and regulating the fuel flow in the low pressure fuel line between the low and high pressure fuel pumps.

Operation

  1. The ECM sends the target fuel pressure to the FPCM via the CAN network.

  2. The FPS sends the actual pressure in the low pressure fuel line between the low and high pressure fuel pumps to the FPCM, and the FPCM forwards it to the ECM. The FPCM also diagnoses malfunctions in the FPCM, fuel pump motor and FPS, and then sends the diagnostic information to the ECM.

  3. The FPCM compares the actual fuel pressure measured by the FPS with the target fuel pressure provided by the ECM, and controls the voltage supplied to the low pressure fuel pump motor. The FPCM continues to regulate the fuel flow rate by controlling the low pressure fuel pump according to engine speed (rpm) and vehicle load.

Circuit Diagrams

Wiring Diagram

Terminal Information

Terminal Illustration

Terminal Function

Pin No. Description Connected To
1 Battery Power (B+) Fuel Pump Relay
2 Fuel Pump (Y) Low Pressure Fuel Pump
3 Fuel Pump (B) Low Pressure Fuel Pump
4 Fuel Pump (W) Low Pressure Fuel Pump
5 CAN [Low] Other Control Module
6 CAN [High] Other Control Module
7 Ground (-) Ground
8 Fuel Pump Shield (Ground) Ground
9 Fuel pressure sensor (FPS) ground (-) Fuel Pressure Sensor (FPS)
10 Fuel pressure sensor (FPS) signal input Fuel Pressure Sensor (FPS)
11 - -
12 Fuel Pressure Sensor (FPS) Power Supply [+5V] Fuel Pressure Sensor (FPS)

Repair Procedures

Removal

  1. Turn the ignition switch OFF and disconnect the negative (-) battery terminal.

  2. Remove the rear crossmember trim.

    (Refer to Body (Interior and Exterior) - "Rear Pillar Trim")

  3. Remove the luggage side trim.

    (Refer to Body (Interior and Exterior) - "Luggage Compartment Side Trim")

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

  5. Loosen the mounting nuts (B), then remove the fuel pump control module (C) from the vehicle.

Installation

  1. Install in the reverse order of removal.

Inspection

  1. Connect the KDS to the vehicle's Data Link Connector (DLC).

  2. Check the DTCs and repair them in accordance with the DTC troubleshooting guide.

  3. Check the power supply voltage to the Fuel Pressure Sensor (FPS). [9 and 12]

    Specification: 5 V

  4. Check the voltage supplied to the Fuel Pressure Sensor (FPS) at idle. [9 and 10]

    Specification: 1.9-3.2 V

  5. Check the fuel pressure in the low pressure fuel line.

    (Refer to Fuel Delivery System - Fuel Pressure Inspection)

Test yourself

A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.