This Cummins fault code 589 PDF is the official Engine Start Alarm Circuit troubleshooting chart for the Cummins ISM CM570 (1999-02) engine platform, covering PID S121, SPN 611, FMI 4/4 and the Yellow warning lamp. It is a step-by-step diagnostic flow, not a general manual, and it takes a technician from symptom to confirmed repair on this specific code.
Cummins fault code 589 explained
The engine start alarm circuit turns on the audible engine start alarm to warn of an automatic engine start. The engine start alarm is typically located in the engine compartment; the OEM manual gives the specific location. This fault typically indicates a short circuit to ground; the engine must have a three-level engine braking harness with the ICON feature enabled for the alarm to function. The chart uses the ICON alarm test.
Official document details
| Brand | Cummins |
| Model coverage | ISM, ISX and Signature CM570 (1999-02) |
| System / Group | DTCs — Engine Start Alarm Circuit |
| Fault identifiers | Fault Code 589, PID S121, SPN 611, FMI 4/4, Yellow lamp |
| Source / Revision | TruckFaultCodes.com, Copyright 2017 |
| Pages | 7 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Fault code verification and clearing
Applicable truck models
This chart applies to on-highway trucks and equipment built on the Cummins ISM, ISX and Signature CM570 (1999-02) engines with the CM570 electronic control module. Because component and battery locations vary by chassis maker, the document repeatedly refers you to the OEM manual for exact positions. For engine specifications and dealer support, see the official Cummins engine site.
Who needs this Cummins fault code 589 manual
Heavy-duty diesel technicians and workshop owners servicing ISM, ISX or Signature CM570 engines need this chart to diagnose the Engine Start Alarm Circuit correctly instead of guessing at parts. It pairs with a diagnostic scan tool and standard shop meters.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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