This Cummins 3488 troubleshooting document covers Fault Code 3488 for an Anti-Lock Braking (ABS) Controller abnormal update rate on SAE J1939 multiplexing circuits. It explains the circuit description, fault conditions, INSITE checks, OEM VECU configuration checks, harness inspections, resistance tests, ECM calibration review, and clearing steps.
Official Cummins 3488 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, and GX CM2250 in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; SAE J1939 Multiplexing Circuit |
| Publication no. | Associated bulletin numbers shown: 4022254, 4022257, 4022250, 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010 and 08-Dec-2010 |
| Pages | 14 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- FAULT CODE 3488 – Anti-Lock Braking (ABS) Controller – Abnormal Update Rate
- 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 for ECM communication with INSITE™ electronic service tool
- Guided Step 2 – Check the fault codes
- Guided Step 3 – Check the OEM VECU and engine ECM for proper multiplexing configuration
- Guided Step 4 – Check the service data link harness
- Guided Step 5 – Check the OEM harness
- Guided Step 6 – Check ECM calibration and clear fault codes
Applicable truck models
This file applies to Cummins CM2250 engine platforms named in the procedure: ISB6.7 CM2250, ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, and GX CM2250. The document concerns vehicles using an OEM VECU or transmission ECU to send multiplexed component information to the Cummins engine ECM over the SAE J1939 data link, including the ABS controller message related to SPN 563 FMI 9. For manufacturer information, visit Cummins official website.
Who needs this Cummins 3488 troubleshooting manual
Workshop technicians, fleet mechanics, and diagnostic specialists need this manual when Fault Code 3488 is active, inactive, or returning after repairs. It is useful when checking INSITE™ communication, OEM VECU source addresses, J1939 connector condition, 50 ohms to 70 ohms data link resistance, greater than 100k ohms short checks, and ECM calibration status.
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