This Cummins fault code 758 reference documents the Cummins fault code 758 fuel injector fault (PID 129, SPN 1349, FMI 7/7, yellow lamp) on ISM CM570 engines. It is part of the DiagTechPro truck manuals library and preserves the original Cummins ISM CM570 fault-code reference republished by TruckFaultCodes.com (Copyright 2017).
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | Cummins ISM CM570 (1999-2002) engines. |
| System / Group | ISM CM570 (1999-02) / DTCs |
| Fault code | Code 758 (PID 129, SPN 1349, FMI 7/7) |
| Source | Cummins ISM CM570 fault-code reference republished by TruckFaultCodes.com (Copyright 2017) |
| Pages | 2 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description and injector location
- Shop talk – rear fuel rail pressure
- Drain line and air-in-fuel checks
- Injector diagnosis
Diagnostic steps in the Cummins fault code 758 document
The electronic control module measures fuel metered to each injector using the rear fuel rail pressure sensor, and sets the code when no fuel is detected entering an injector. Troubleshooting measures drain-line restriction below 4.0 in Hg and checks for air in the pressure-side fuel before moving on to identify and address the affected injector.
The Fuel injector – no fuel entering injector (rear rail) code on Cummins ISM CM570 engines is read with INSITE and the INLINE datalink adapter; the PID, SPN and FMI values identify the affected circuit and failure type. Work each troubleshooting step in the published order, inspect every connector for corroded, bent or pushed-back pins, and re-verify after the repair by starting the engine, reaching the stated conditions and confirming the code goes inactive before clearing stored codes. Keep the diagnostic log with the repair order for warranty and quality tracking.
Applicable truck models and engines
This document applies to Cummins ISM CM570 (1999-2002) engines. For factory service data, parts and warranty information, consult the official Cummins support site.
Who needs the fault code 758 manual
It is for technicians tracing a no-fuel injector fault on the rear rail of a Cummins ISM CM570 engine.
The complete PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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