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2001 MY OBD System Operation Summary for 7.3L Diesel Engine

July 18th, 2010 · No Comments

OBD-II Systems
California OBD-II applies to all gasoline engine vehicles up to 14,000 lbs. Gross Vehicle Weight Rating (GVWR) starting in the 1996 MY and all diesel engine vehicles up to 14,000 lbs. GVWR starting in the 1997 MY. “Green States” are states in the Northeast that chose to adopt California emission regulations, starting in the 1998 MY. At this time, Massachusetts, New York, Vermont and Maine are Green States. Massachusetts and Maine receive California – certified vehicles for passenger cars and light trucks up to 14,000 lbs. GVWR. New York and Vermont receive California – certified vehicles for passenger cars and light trucks up to 6,000 lbs. GVWR. The National LEV program (NLEV) requires compliance with California OBD-II, including 0.020″ evaporative system monitoring requirements. The NLEV program applies to passenger cars and light trucks up to 6,000 lbs. GVWR nation-wide from 2001 MY through 2003 MY
Federal OBD applies to all gasoline engine vehicles up to 8,500 lbs. GVWR starting in the 1996 MY and all diesel engine vehicles up to 8,500 lbs. GVWR starting in the 1997 MY. OBD-II system implementation and operation is described in the remainder of this document.
OBD-I Systems
If a vehicle is not required to comply with OBD-II requirements, it utilizes an OBD-I system. OBD-I systems are used on all over 8,500 lbs. GVWR Federal truck calibrations. Federal > 8,500 lbs. OBD-I vehicles use the same PCM, J1850 serial data communication link, J1962 Data Link Connector, and PCM software as the corresponding OBD-II vehicle.

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