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Conditions for Updating I/M System Status Each system requires at least one, and sometimes several, diagnostic tests. The results of these tests are reported z The vehicle is new from the factory and has not yet been driven through the necessary drive conditions to z The battery has been disconnected or discharged below operating voltage. z The control module power or ground has been interrupted. z The control module has been reprogrammed. z The control module DTCs have been cleared as part of a service procedure. Monitored Emission Control Systems The OBD-II System monitors all emission control systems that are on-board. Not all vehicles have a full z Air conditioning system. z Catalytic converter efficiency. z Comprehensive component monitoring. Emission related inputs and outputs. z Evaporative (EVAP) emissions system. z Exhaust Gas Recirculation (EGR) system. z Fuel delivery system. z Heated catalyst monitoring. z Misfire monitoring. z Oxygen Sensor system (O2S or HO2S). z Oxygen sensor heater system (HO2S heater). z Secondary Air Injection (AIR) system. Systems such as fuel delivery, misfire, and comprehensive components may not be listed in a system status list. Drive Cycle
1998 Chevrolet Pickup C1500 DRIVE CYCLES OBD-II Vehicles - OBD-II Readiness Monitors
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