This code 288 DTCs document is a troubleshooting PDF for the SAE J1939 multiplexing remote accelerator pedal or lever position sensor system on Cummins ISB6.7 CM2150 applications. It explains why the Cummins engine ECM receives network data in error from an OEM VECU or transmission ECU, and how INSITE™ electronic service tool checks are used to confirm configuration and throttle status.
Official code 288 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC and ISL with CM2150 |
| System/Group | DTCs; SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System |
| Publication no. | Not shown in extract |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 9 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the OEM VECU and engine ECM for proper multiplexing configuration.
- Guided Step 3 – Monitor the remote accelerator parameters with INSITE™ electronic service tool.
- Guided Step 4 – Clear the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 engines in the 2007-09 coverage group and to the ISB, ISC and ISL with CM2150 remote accelerator multiplexing fault description shown in the extract. The OEM VECU location and J1939 datalink wiring vary by OEM, so the procedure points technicians back to OEM information for vehicle-side configuration, source addresses, remote throttle wiring, and VECU checks. See the official manufacturer site at Cummins.
Who needs this code 288 DTCs manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this code 288 DTCs manual when a red STOP ENGINE lamp is triggered and the engine will not respond to the remote throttle. The guide is useful when checking whether the remote throttle switch shows ON, whether Percent Throttle reads zero or greater than zero in the expected pedal positions, and whether the engine ECM multiplexing configuration matches the OEM VECU multiplexing configuration.
The procedure states that Fault Code 288 is set when the OEM VECU detects a remote throttle signal wire shorted high or shorted low, or a remote throttle enable switch shorted high or shorted low, then transmits that status to the Cummins engine ECM over the SAE J1939 datalink. It also notes that the primary or cab accelerator may still be usable while the multiplexed remote device will not operate. The full PDF is available in the DiagTechPro manuals library, free account required to download.
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