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Clear Diagnostic Information Clears diagnostic trouble codes (DTC's) from ECU memory. DTC grouping is used to loosely identify fault locations in undocumented ECU's. 0x14 00 00 00 to FF FF FF clears specific powertrain DTC's; 0x14 40 00 00 to 7F FF FF clears specific chassis DTC's; 0x14 80 00 00 to BF FF FF clears specific body DTC's
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
An ECU from a Geo Storm An electronic control unit ( ECU ), also known as an electronic control module ( ECM ), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle .
The European on-board diagnostics (EOBD) regulations are the European equivalent of OBD-II, and apply to all passenger cars of category M1 (with no more than 8 passenger seats and a Gross Vehicle Weight rating of 2,500 kg, 5,500 lb or less) first registered within EU member states since January 1, 2001 for petrol-engined cars and since January ...
It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control Module (BCM), for a total of three separate computers. These automotive computers are generally very reliable.
Previously, Nissan Motor, Hitachi and Robert Bosch owned 25%, 17% and 10% respectively. [4] 2003 Unisia JECS opens factory in Shenzhen, China, to cut costs as demanded by Nissan. [5] 2004 Hitachi Unisia Automotive Ltd. merged into Hitachi, Ltd. 2004 Unisia JECS opens factory in Guangzhou, China, to make water pumps and valves.
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An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems.