HARLEY-DAVIDSON

M1720

2026-03-31 · NHTSA 11031172

車型關聯可作查閱線索；引擎、生產範圍與軟體條件請核對原廠資料。

原廠摘要

以下為英文原文

SERVICE BULLETIN M1720 (REV A): PAN AMERICA ELECTRONIC CONTROL MODULE (ECM) UPDATE. PURPOSE: Initial release 3/3/2026. Revision A. 3/30/2026. Updated: Purpose for Service Bulletin and Required Dealer Action. Adjust information for 2024 models. Purpose for Service Bulletin. This bulletin informs dealers that there is an Electronic Control Module (ECM) update available for 2021-2025 RA1250, RA1250S, RA1250ST and RA1250SE on Digital Technician II (DT II). The update improves engine function by addressing engine operation after a cold start by improving idle stability and improved Quickshifter function. For 2021-2024 models the Body Control Module (BCM) and ECM update must both be completed. If only the ECM is updated, a nuisance Diagnostic Trouble Code (DTC) U040000 will populate and not be able to be cleared. Because of this, the BCM update should be done first and then the ECM.

僅在原廠、通報編號、發布日期和完整摘要一致時，才合併重複登錄，並保留原始編號。舊資料仍可查閱；確認明確取代關係後才標示後續版本。1994 年以前的車輛關聯與預設結果分開顯示；未註明年式不等於所有年式適用。