M1559

SERVICE BULLETIN M1559: REVOLUTION MAX ECM UPDATE. PURPOSE: This bulletin informs dealers that Harley-Davidson has an Electronic Control Module (ECM) update that is available on Digital Technician II (DT II). This update is to address Diagnostic Trouble Code (DTC) P000000 setting and putting the bike into the fast idle position (4,000 rpm). The update also addresses the concern of an inadvertent tripping of P227900 for the intake air leak under certain riding conditions when no intake leak is present.