Note. DTC P1107 indicates a low voltage problem and DTC P1108 indicates a high voltage problem.
Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING DTCS . Turn ignition on. If DTC P1107 or P1108 is indicated, substitute a known-good PCM and recheck. If neither DTC P1107 or P1108 is indicated, problem is intermittent, system is okay at this time.