2021 Ic Bus Ce TSBs
62 Technical Service Bulletins across 12 categories
Categories
Engine
20 bulletinsThe purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and...
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LPG.
How to request a horsepower quote; all International and Cummins engines
CE Bus Engine Cover Sealing
Per agreement with EPA and CARB, Cummins, Inc.
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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.
Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI...
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engines or Cummins ISB engine with Allison transmissions
QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
QLS Emergency Calibration.
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applies to 2016 and newer Cummins B6.6, X15, and L9 engines and all A26 engines
Bus, DuraStar, and MV air compressor inlet hose chaffing/leaking; equipped with Cummins ISB / B6.7 Engines
With the vehicle in motion, the engine control module (ECM) may set a fault code resulting in engine shut down without warning.
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Only models equipped with certain PSI engines
QLS Emergency Calibration; Models equipped with 2016 and newer Cummins B6.7, X15 and L9 engines or International A26...
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engine.
With the vehicle in motion, the engine control module (ECM) may set a fault code resulting in engine shut down without...
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warning; only models equipped with PSI gasoline or LPG engines.
QLS Emergency Calibration; Models with 2016 Cummins ISX, A26 and EPA 2017 and newer Cummins X15, L9, or B6.7 engines
Engine Oil Capacities.
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All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
DuraStar and MV Air Compressor Inlet Hose Rub.
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Only models equipped with Cummins ISB or B6.7 engines
QLS Emergency Calibration.
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Only models with EPA 2017 and newer Cummins X15, L9, or B6.7 engines
Cummins engine vibration with aftermarket air conditioning installed
Bus with Cummins B6.7 engine and Dual A/C - Cylinder Head Failures
Fuel Filters, Winter Additives, and Blending Fuels for Cummins Engines
Certain school buses equipped with PSI gasoline or propane engines may have engine blocks without the counterbore...
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machined where the oil pressure sensor is installed.
Other
16 bulletinsJ1939 Data Link Source Address Information
Diagnosis of chassis wander complaints.
Luggage rack upholstery repair; only busses equipped with luggage rack.
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
Telematics installation guidelines - Only units with 500K data link
J1939 Data link source address information
Pico Scope CCOS (Crankcase Separator Test)
PicoScope Test One Channel RCT
PicoScope Test Resistance and Ohmmeter
PicoScope Test for Datalink (CAN) Health Shorts & opens
J1939 Data Link Source Address Information
Greenhouse Gas Phase 2 Regulatory Compliance Implementation
J1939 Data Link Troubleshooting
How to obtain As built parameter list
Driveline Information Center and Troubleshooting Procedures
Electrical
9 bulletinsThis document details the procedure that must be followed to ensure proper alternator troubleshooting.
Cummins B6.7 Grid Heater Relay
General Wheel Speed Sensor Troubleshooting
PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
General wheel speed sensor troubleshooting
Cummins B6.7 Grid Heater Relay
The electrical harness to the air dryer heater may have been assembled without the ground circuit for the heater element to function.
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School bus only; NOT TRANSIT BUS
CE Bus Cowl Panel Relay Kit
Fuel System
3 bulletinsBus Diesel fuel Cap Leaks; only models built 11/30/2020 through 05/18/2023
Certain IC Bus CE buses may be built with Webasto fuel lines routed incorrectly.
CE Bus fuel sending access hole in wrong location; only models with feature 47AEU built between 5/7/19 and 2/19/20
HVAC & Climate
3 bulletinsAir Compressor Inlet Hose Chaffing / Leaking
Factory Installed Air Conditioning, EC4.0 System operating instructions and the service manual
Bus Air Conditioning Service Contacts for HVAC Information
Software & Calibration
2 bulletinsQLS Emergency Calibration Revert Process
QLS Emergency Calibration Revert Process
Transmission
2 bulletinsPower Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
This article is for adding additional protection to the driver's area of the bus to help mitigate the transmission of...
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germs.
Body & Paint
2 bulletinsAftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
This document will guide the user through determining if there is a sealing issue with the rear emergency door on a CE...
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Bus.
Infotainment
2 bulletinsCE Bus Radio PA not switching to external / internal speakers; only models with feature codes 49CLM or 49CLN
Radio Diagnostics and Information
Brakes
1 bulletinThis document is to guide users to eliminate brake pedal rattle noise.
Pre-Delivery & Maintenance
1 bulletinBus seat back foam inspection guidelines
Lighting
1 bulletinRepair Procedures for Vehicles Struck by Lightning