Cummins ISM code 649 is the DiagTechPro reference page for this Cummins diagnostic fault code 649 document, a 2-page PDF sourced from TruckFaultCodes.com (Copyright 2017) covering the lamp: maintenance engine oil change interval – condition exists condition. The electronic control module (ECM) informs the driver of a maintenance event by using the Maintenance Monitor feature’s lubrication oil drain limits. The maintenance lamp alerts the driver when the condition exists.
Cummins ISM code 649 document details
| Brand | Cummins |
|---|---|
| Model coverage | Maintenance Reminder (ISM CM871, 2007-09) |
| System / Group | ISM CM871 (2007-09) / DTCs |
| Fault identifier | Code 649 (PID S115, SPN 1378, FMI 11/31) |
| Warning lamp | Maintenance |
| Source | TruckFaultCodes.com |
| Year / Revision | Copyright 2017 |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Repair verification and clearing fault codes
Applicable truck models
This document applies to Cummins Maintenance Reminder electronic engines in the ISM CM871 (2007-09) family used in on-highway and vocational trucks. The oil filter is located on the exhaust side of the engine, and the oil fill port varies by application. Verify the electronic control module (ECM) calibration is correct. If necessary, recalibrate the ECM. The troubleshooting section walks through connector and pin inspection, circuit measurements and step-by-step checks, then confirms code 649 is inactive before all fault codes are cleared. Verify engine calibration and coverage against the official Cummins engine support site before ordering parts.
Who needs this ISM code 649 manual
Any mechanic or workshop owner diagnosing ISM code 649 needs this PDF to follow the factory diagnostic steps in the correct order and avoid replacing parts that are still good. This fault code will only become active if the Maintenance Monitor is enabled in diagnostic tool.
Related manuals library
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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