This bulletin applies to 2015-2016 Hyundai Genesis vehicles. DTC U0109/U010900 may be set, related to a communication error with the fuel pump control module (FPCM).
Example of the FPCM.
If any FPCM codes are present, replace the FPCM. Using a voltmeter, check the fuel pressure sensor output voltage. Specified voltage is 5V. Check the FPCM output voltage at idle. Specified voltage is 1.4-3.2V. Test the fuel pressure at the fuel delivery line from the fuel tank. Refer to the shop manual.
Check fuel pressure sensor output voltage. Spec is 5V.
To replace the FPCM, turn the ignition switch off and disconnect the negative battery terminal. Remove the trunk rear transverse trim. Fold the LH luggage side trim to access the FPCM. Disconnect the FPCM connector and remove the FPCM. Install the new FPCM and reassemble.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
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