Add To Cart. Complete your purchase by midnight on and receive back in Points on any purchase Added to your cart:. Continue shopping Checkout. Description Specifications. The Canobd2 Gives You an Inside Look at your Engine This Craftsman diagnostic tool delivers clear, precise, to-the-minute diagnostic information you can use to keep your rig running its best. Built to link up with engines made after , this tool gives you the insight to take care of persistent problems and the knowledge to make little tweaks now that can turn into huge repair savings down the road.
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Those benefits were not conditioned on the positive or negative content of the review. To standardize communication procedures and protocols between the diagnostic equipment Scan Tools, Code Readers, etc.
The following terms and their definitions are related to OBD2 systems. Read and reference this list as needed to aid in the understanding of OBD2 systems. Currently, up to fifteen Monitors are used in OBD2 systems.
Additional Monitors will be added as the OBD2 system is further developed. Others may require a set of complex procedures, such as, starting the vehicle when cold, bringing it to operating temperature, and driving the vehicle under specific conditions before the Monitor can run and complete its diagnostic testing.
These conditions may include starting the vehicle when it is cold, driving the vehicle at a steady speed cruising , accelerating, etc. Only those trips that provide the Enabling Criteria for all Monitors applicable to the vehicle to run and complete their individual diagnostic tests qualify as an OBD2 Drive Cycle.
OBD2 Drive Cycle requirements vary from one model of vehicle to another. Vehicle manufacturers set these procedures. The PCM uses warm-up cycles as a counter to automatically erase a specific code and related data from its memory. When no faults related to the original problem are detected within a specified number of warm-up cycles, the code is erased automatically. DTCs are alphanumeric codes that are used to identify a problem that is present in any of the systems that are monitored by the on-board computer PCM.
Each trouble code has an assigned message that identifies the circuit, component or system area where the problem was found. The 1st character is a letter B, C, P or U. It identifies the. The 2nd character is a numeric digit 0 thru 3. Generic DTCs are codes that are used by all vehicle manufacturers.
Manufacturer-Specific DTCs are codes that are controlled by the vehicle manufacturers. The Federal Government does not require vehicle manufacturers to go beyond the standardized generic DTCs in order to comply with the new OBD2 emissions standards.
However, manufacturers are free to expand beyond the standardized codes to make their systems easier to diagnose. The 3rd character is a letter or a numeric digit 0 thru 9, A thru F. It identifies the specific system or sub-system where the problem is located. The 4th and 5th characters are letters or numeric digits 0 thru 9, A thru F. They identify the section of the system that is malfunctioning. Identifies the system where the problem is located.
Some faults require detection for two trips in a row before the MIL is turned on. The MIL continues to flash as long as the condition exists. The DTCs are automatically erased if the fault that caused them to be set is not detected again during that period. The program has several procedures and diagnostic strategies. 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. I hope this is helpful. Please let me know if you needed further assistance.
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