Cummins fault code 2314 is documented on this DiagTechPro library page for Cummins ISM CM871 (2007-09) engines, where it flags a Engine Timing Actuator Driver 2 Circuit Error – Condition Exists condition (PID S084, SPN 1245, FMI 11/31, Amber lamp). This 5-page PDF reproduces the manufacturer description, shop talk, component location and step-by-step troubleshooting so technicians can confirm and clear the code.
Cummins fault code 2314 overview
Cummins defines this code as “ENGINE TIMING ACTUATOR DRIVER 2 CIRCUIT ERROR – CONDITION EXISTS” on the Rear Timing Actuator Circuit. The timing actuators are commanded by the electronic control module (ECM) to control fuel timing. Each timing actuator is connected to the ECM by a timing actuator (+) and timing actuator (-) wire. An electrical signal is sent to the timing actuator from the ECM on the (+) wire and is returned to the ECM on the (-) wire. Each actuator is normally closed, and it is only opened by an electrical pulse from the ECM during metering.
The document’s shop talk section highlights the following:
- An open circuit in the engine harness, connectors, or actuator.
- A short circuit to ground in the engine harness or actuator.
- A short circuit to voltage source in the engine harness.
- Low or high resistance in the actuator.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) |
| System / Group | Rear Timing Actuator Circuit — ISM CM871 fault codes |
| Fault code | 2314 (SPN 1245, FMI 11/31) |
| Source | TruckFaultCodes.com Cummins fault code reference (© 2017) |
| Pages | 5 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (PID, SPN, FMI, lamp)
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Applicable truck models and engines
This document applies to Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) equipped diesel engines that log Fault Code 2314 on the Rear Timing Actuator Circuit. Always confirm engine calibration and use a Cummins diagnostic tool such as INSITE to read live data before starting repairs. Full engine specifications and service information are published on the Cummins official website.
Who needs this Cummins fault code 2314 manual
Heavy-duty truck technicians, fleet workshops and owner-operators diagnosing an electronic control module warning on ISM CM871 engines will use this sheet to verify SPN 1245 before parts are replaced.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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