TSBs

Replacing Genesis fuel pump control module

July 15, 2024

This bulletin applies to 2019-2020 Genesis G80 vehicles. The technician may find DTC U0109/U010100 (communication error/lost communication with fuel pump control module FPCM) stored.

Motor Age Staff

Related To: Mitchell 1

Check voltage at the FPS at pin locations one and three. Spec is 5V.

This bulletin applies to 2019-2020 Genesis G80 vehicles. The technician may find DTC U0109/U010100 (communication error/lost communication with fuel pump control module FPCM) stored.

Connect GDS to the data link connector (DLC). If there are any FPCM DTC related codes, replace the FPCM.

Check output voltage at idle, at pins two and three. Spec voltage is 1.4-3.2V.

Using a voltmeter, check the fuel pressure sensor (FPS) output voltage at pins one and three. Specified voltage is 5V.

Check output voltage ai idle at pins two and three. Specified voltage is 1.4 – 3.2V.

Test fuel pressure at the fuel delivery line from the fuel tank.

If the FPCM is out of specification, replace the FPCM.

Access to the FPCM is through the left side of trunk trim.

1. Turn the ignition switch OFF and disconnect the battery negative terminal (be sure to record radio presets prior to battery disconnection).

2. Remove the trunk rear transverse trim (driver side).

3. Fold the left hand luggage side trim to access the FPCM.

A) FPCM connector; B)Three mounting nuts; C) FPCM.

4. To remove the FPCM, disconnect the FPCM connector mounting nuts and the FPCM.

5. Reinstall all parts in reverse order. Restore radio presets.

About the Author

Motor Age Staff

Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored.