This document is a Fault Code 3528 DTCs troubleshooting manual for the accelerator pedal or lever idle validation switch abnormal update rate. It explains the J1939 multiplexed circuit, fault effects, diagnostic conditions, guided checks, harness testing, ECM calibration review, and fault clearing using INSITE™ electronic service tool.
Official Fault Code 3528 DTCs document details
| Brand | Cummins |
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Accelerator Pedal or Lever Idle Validation Switch Circuit |
| Publication no. | 4022254, 4022257, 4022250, 2883445, 4022256, 4022255 listed in associated procedures |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 06-Dec-2010 |
| Pages | 14 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- FAULT CODE 3528 – Accelerator Pedal or Lever Idle Validation Switch – 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 3 – Check the OEM VECU and engine ECM for proper multiplexing configuration
- Guided Step 4B – Check for an open or short circuit in the J1939 data link harness
- Guided Step 5B – Check for an open or short circuit in the ECM J1939 data link harness
- Guided Step 5D – Check for an inactive fault code
- Guided Step 6 – Check ECM calibration and clear fault codes
Applicable truck models
The extract identifies this procedure for Cummins CM2250 applications including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The fault is SPN 558 FMI 9, where the ECM detects no communication or an invalid data transfer rate on the SAE J1939 data link between the ECM and the accelerator pedal or lever idle validation switch; the listed effect is that the engine will only idle. For official manufacturer information, visit Cummins official website.
Who needs this Fault Code 3528 DTCs manual
This manual is useful for diesel mechanics, fleet technicians, and workshop owners diagnosing multiplexed accelerator pedal idle validation faults on Cummins CM2250 engines. It supports checks for INSITE™ communication, OEM VECU source addresses, service data link connector damage, J1939 resistance values from 50 ohms to 70 ohms, shorts above 100k ohms, ECM calibration revision status, and final fault code clearing.
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