Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
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This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 1037 to ensure continued compliance with greenhouse gas (GHG) regulations.
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New CARB Idle Reduction Change Request
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This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are added or removed, the comparison runs automatically with no manual action required. The program presents results in an interactive table that shows feature codes, descriptions, access levels, and whether each feature is present in each selected file. Built-in search, filtering, and sorting make it easy to locate specific features or focus only on differences between files. Column visibility can be customized to show or hide descriptions and access information as needed. Users can remove files individually or clear all files at once, with results updating instantly. The tool also includes reporting and export options that reflect exactly what is visible on screen, allowing results to be printed, copied, saved as text, or exported to CSV for use in Excel or other spreadsheet tools. Overall, the program streamlines the process of comparing vehicle feature configurations, helping users quickly identify differences, validate setups, and document results without manual comparison or external tools.
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Engine replacements for all International engines will need to follow this procedure.
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This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
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This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
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IC Bus Operator's Manuals
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In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine. This article lists all the currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
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Title: Service Portal iKNow Feedback Case Types Applies To: All
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Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
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Title: A/C Refrigerant and Oil Capacities Applies To: All current models
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Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
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Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
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Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
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Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
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This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes in blue will help you to determine the source of the lean and identify the action and parts required to correct the lean.
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Suggested alignment target values when performing a vehicle axle alignment.
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Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or PSI engine.
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J1939 Data Link Source Address Information
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Diagnosis of chassis wander complaints.
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General Wheel Speed Sensor Troubleshooting
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Bus seat back foam inspection guidelines
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Cummins B6.7 Grid Heater Relay
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Luggage rack upholstery repair; only busses equipped with luggage rack.
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J1939 Data Link Troubleshooting
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Bus Diesel fuel Cap Leaks; only models built 11/30/2020 through 05/18/2023
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QLS Emergency Calibration Revert Process
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Per agreement with EPA and CARB, Cummins, Inc. provided an emergency calibration for Cummins ISB, B6.7, ISL9, L9, and X15 engines when a DEF Quality Sensor (DQS) was not available. This action addressed the Diesel Exhaust Fluid (DEF) Quality Sensor failures in the field and the unavailability of parts due to the worldwide chip shortage. This recall is step two of this program designed to revert all affected vehicles back to the certified calibration and to provide them with the latest improved DQS and Coolant Control Valve (CCV) designs. Additionally, the emergency calibration and the restoration to the certified calibration with the latest improved DQS and Coolant Control Valve (CCV) designs have no effect on vehicle Emissions.
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Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
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Air Compressor Inlet Hose Chaffing / Leaking
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QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
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Pico Scope CCOS (Crankcase Separator Test)
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PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
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PicoScope Test for Datalink (CAN) Health Shorts & opens
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PicoScope Test Resistance and Ohmmeter
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PicoScope Test One Channel RCT
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Certain IC RE school and commercial buses may have outdated BCM calibration that could result in the ABS indicator light illuminating at all times
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Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
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How to obtain As built parameter list
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Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
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Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.