The fault code 288 DTCs troubleshooting manual is the official Cummins diagnostic procedure for the SAE J1939 multiplexing remote accelerator on the ISX11.9 CM2250 engine platform. Multiplexing lets the remote accelerator pedal or lever report its position to the ECM through an OEM vehicle control unit over the SAE J1939 data link instead of a direct wire. This 10-page PDF walks a technician from symptom to verified repair.
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | Cummins ISX11.9 CM2250 (2010-12), Cummins ISX12 CM2250 (2010-12) |
| System / Group | SAE J1939 multiplexing remote accelerator, DTCs |
| Fault code reference | Fault Code 288 — SPN 974, FMI 19 |
| Warning lamp | a red STOP lamp |
| Revision (Last Modified) | 11-Jun-2010 |
| Pages | 10 |
| File size | 0.20 MB |
| Format | |
| Language | English |
fault code 288 DTCs document contents
- Overview and Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Code
- Action Taken When the Fault Code Is Active
- Conditions for Clearing the Fault Code
- Shop Talk and possible causes
- Associated Procedures table
- Guided troubleshooting steps
- Verify the repair
Applicable truck models covered
This procedure applies to Cummins engines that report Fault Code 288 (SPN 974, FMI 19), including the Cummins ISX11.9 CM2250 (2010-12), Cummins ISX12 CM2250 (2010-12). Always confirm the exact calibration and publication for your engine on the official Cummins engine support site before ordering parts.
Common causes and symptoms
This fault reports remote accelerator pedal or lever position data received in error over the network and commands the red STOP lamp for safety. Shop Talk in the document lists the most likely causes:
- Invalid remote accelerator data on the SAE J1939 network
- A malfunctioning OEM multiplexing device or data link fault
Who needs the fault code 288 DTCs manual
Diesel technicians and workshop owners diagnosing Fault Code 288 on ISX11.9 CM2250 trucks need this manual to follow the guided steps, use the correct connector pins and verify the repair with INSITE electronic service tool instead of guessing.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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