United States 99V253000
IC CORPORATION
The problem
VEHICLE DESCRIPTION: SCHOOL BUSES. SOME HEATER/DEFROSTER UNITS WERE BUILT WITH THE BLOWER MOTOR WIRED IMPROPERLY. WHEN WIRED IMPROPERLY THE BLOWER MOTOR RUNS BACKWARD AND AIRFLOW FOR HEATING AND DEFROSTING IS VERY LIMITED. THIS DOES NOT MEET THE REQUIREMENTS OF FMVSS NO. 103, "WINDSHIELD DEFROSTING AND DEFOGGING SYSTEMS."
Risk
DEFROSTING NEEDS MAY NOT BE ACHIEVED AND COULD RESTRICT DRIVER VISIBILITY, INCREASING THE RISK OF A CRASH.
What owners should do
OWNERS WILL BE INSTRUCTED ON HOW TO INSPECT AND REPAIR THE DEFECT BY SWITCHING THE CONNECTION OF TWO WIRES.
Units 41