IC Bus CE Series 2020, Operation And Maintenance Manual

Page: 21 / 287

Introduction
Emission Control Systems
NOTE: Federal and California Emission system warranties
are found in your Engine Operation and Maintenance
Manual.
HD-OBD Foreword
Heavy Duty On-Board Diagnostics (HD-OBD) is a U.S.
Government mandated standard for all 2013 and later Class 4
and above vehicles with a Gross Vehicle Weight Rating (GVWR)
of 14,001 pounds or more. The HD-OBD system monitors the
engine and aftertreatment systems to verify they are operating
within emissions limits.
If an emissions fault is logged, the
Malfunction Indicator Lamp (MIL) will illuminate and one or more
fault codes will be set.
The HD-OBD system operates similarly to previous power train
control systems by storing fault codes and turning on the MIL. If
the problem that caused the fault goes away, the code will clear
and the MIL will go out after certain operating conditions have
been met. This may take several times operating the vehicle.
Supplemental Federal Emission Control System Warranty
The United States Environmental Protection Agency adopted
new heavy-duty Greenhouse Gas (GHG) vehicle regulations on
15 September 2011. This vehicle may be certified to the GHG
regulations. For certified vehicles, additional GHG emissions
control system warranty covers certain vehicle components.
This Supplemental GHG Federal Emission Control System
Warranty coverage for these vehicle components will be
managed according to current Federal Emission Control System
Warranty process. The GHG emission control system warranty
applies to the below listed vehicle components such that they
meet the following two conditions:
1. The vehicle and / or GHG emission control system
component is designed, built, and equipped so it
conforms at the time of sale to the ultimate purchaser
with the requirements of the GHG regulations and such
component is an emission control and appears on the
GHG vehicle emission certification label, and
2. The vehicle and / or GHG emission control system
component is free from defects in materials and
workmanship that cause the vehicle to fail to conform
to the GHG requirements during the applicable
supplemental warranty period.
GHG Emission Control System Warranty Period
The GHG emission control system warranty period begins on
the date the new GHG certified vehicle is delivered to you.
The period of coverage is the greater of the base mechanical
warranty or:
• Five (5) years or 50,000 miles, whichever comes first,
for spark-ignition and light heavy-duty diesel vehicles with
GVWR below 19,500 pounds.
• Five (5) years or 100,000 miles, whichever comes first,
for medium and heavy heavy-duty vehicles with GVWR
equal to or greater than 19,500 pounds.
• Two (2) years or 24,000 miles, whichever comes first, for
tires.
7