1. Clear fault code with the method of removing battery connecting linesFor most electronically controlled engines, remove the battery connection or remove the fuse to the ECU, keep the power out of the ECU to clear the fault code stored in the ECU. However, for some engines, it is not suitable for this method because the memory of the vehicle burgtes, the sound, quartz clock, etc. also stores in a random memory. These memory will also be cleared together, resulting in sound lock code and other phenomena. These engines should be removed by the method requested in the maintenance manual to clearly remove the battery connection.
2. Do not remove the battery connection before the fault code of the engine electric control unit record
Because the battery connection is removed or unplugged before reading the failed code, the fault code stored in its random memory is automatically eliminated due to the interrupting power supply. If you want to get a fault message, you must repeat or reproduce the operating status and environmental conditions when the fault occurs, and for the engine that cannot be started, it will never get a fault code after operation, and lose an important fault judgment information, so Before serving the electronically controlled engine, you should follow the fault code required to be recorded first, other repairs.
3. When the ignition switch is on the connection, the battery connection cannot be removed casually.
When the ignition switch is in position, no matter whether the engine is operating, it is absolutely no possible to remove the battery connection or unplug the power fuse. Because, sudden power outage causes the coil in the circuit to generate self-electro-electricity, there is a high instantaneous voltage such that Microelectronic devices such as ECU and related sensors are severely damaged.
Furthermore, the wires of other electrical devices having the same battery voltage can not be removed when the ignition switch is ON position, otherwise the associated coil will generate self-inductive motion, thereby ECU or sensor. These electrical devices include: ignition systems, idle step motors, ECUs programmable read only memory, injectors, air conditioners, and other electromagnetic clutches, and some of the ECUs, etc. Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
