Each procedure or diagnostic strategy is made to monitor the operation of, and run diagnostic tests on, a specific emissions-related component or system. Currently, fifteen Monitors are supported by OBD2 systems.
Additional monitors may be added as a result of Government regulations as the OBD2 system grows and matures. Not all vehicles support all fifteen Monitors. Continuous Monitors run constantly when the engine is running.
The Continuous Monitors are:. Misfire Monitor. Fuel System Monitor. Oxygen Sensor Monitor. Oxygen Sensor Heater Monitor. Catalyst Monitor. Heated Catalyst Monitor. EGR System Monitor. Secondary Air System Monitor. The following Monitors became standard beginning in The majority of vehicles produced before this time will not support these Monitors. NMHC Monitor. NOx Adsorber Monitor. Boost Pressure System Monitor. Exhaust Gas Sensor Monitor. PM Filter Monitor. Comprehensive Component Monitor CCM - This Monitor continuously checks all inputs and outputs from sensors, actuators, switches and other devices that provide a signal to the computer.
The Monitor checks for shorts, opens, out of range value,. Example: The signal from the throttle position sensor indicates the vehicle is in a wide-open throttle condition, but the vehicle is really at idle, and the idle condition is confirmed by the signals from all other sensors.
Based on the input data, the computer determines that the signal from the throttle position sensor is not rational does not make sense when compared to the other inputs. In this case, the signal would fail the rationality test. Fuel Trim is a set of positive and negative values that represent adding or subtracting fuel from the engine.
The program is designed to add or subtract fuel, as needed, up to a certain percent. If the correction needed is too large and exceeds the time and percent allowed by the.
Misfire Monitor - This Monitor continuously checks for engine misfires. A misfire occurs when the air-fuel mixture in the cylinder does not ignite. The misfire Monitor uses changes in crankshaft speed to sense an engine misfire. When a cylinder misfires, it no longer contributes to the speed of the engine, and engine speed decreases each time the affected cylinder s misfire. The misfire Monitor is designed to sense engine speed fluctuations and determine from which cylinder s the misfire is coming, as well as how bad the misfire is.
There are three types of engine misfires, Types 1, 2, and 3. If a fault is sensed on the first trip, the computer temporarily saves the fault in its memory as a Pending Code.
The MIL is not commanded on at this time. When a Type 2 misfire is sensed on the first trip, the computer commands the MIL to light when the misfire is sensed.
Catalyst Monitor - The catalytic converter is a device that is installed downstream of the exhaust manifold. It helps to oxidize burn the unburned fuel hydrocarbons and partially burned fuel carbon monoxide left over from the combustion process. To accomplish this, heat and catalyst materials inside the converter react with the exhaust gases to burn the remaining fuel.
Some materials inside the catalytic converter also have the ability to store oxygen, and release it as needed to oxidize hydrocarbons and carbon monoxide. In the process, it reduces vehicle emissions by converting the polluting.
The computer checks the efficiency of the catalytic converter by monitoring the oxygen sensors used by the system. One sensor is located before upstream of the converter; the other is located after downstream of the converter. If the catalytic converter loses its ability to store oxygen,.
In this case, the monitor fails the test. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. The main difference is that a heater is added to bring the catalytic converter to its operating. The computer determines when, for how long, and how much exhaust gas is recirculated back to the intake manifold.
I hope the information below will answer your question. If not please let me know and I will contact the manufacturer. Comes with access to Innova. Sam A. Could you please contact the manufacturer and find out if that scan tool works on dodge vehicles.
Thank you. Sincerly, Preston Coates. The Dodge vehicles belong to the Chrysler Corporation so it should work fine. If you need information on a specific model I will be glad to contact the manufacturer.
Thanks Preston. The dodge neon has a 2. Yes according to the support line for this product and the information in the previous answer it will work with the dodge neon.
If you need some direct help from the customer support line you can use this link to contact them. I just bought a Craftsman Model Scan Tool.
I like a lot about it but there 2 things that bother me. I can't download a manual for it. I'm going to try a simple adapter cable, but if tat doesn't work than I still have one PC with a serial port on it. Vehicle health reports delivered right to your mobile device. Find out exactly what part needs replacing and buy it directly from your favorite online retailer.
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