Automotive computer control system maintenance

Automotive computer control system maintenance 1) Do the engine running off the battery cable to prevent loss of load caused by the generator voltage is too high can damage your computer.
2) When the engine fault light (CHECKENGINE) is lit, the fault did not disconnect the battery before repairing the computer line to prevent the trouble code is stored in clear. Difficult to repair.
3) prohibit the use of multiple batteries in series or start power supply to start the vehicle.
4) Do not do high-voltage flash experiments, in order to avoid potential damage to the computer self-inductance.
5) vehicles to burn welding should first disconnect the battery cable. Remove the computer.
6) the majority of car engine computers have a permanent power source, disconnect the battery before disassembly ban on computer, to avoid potential self-inductance caused by damage to the computer.
7) Do not plug in the engine running with the inductive nature of computer-related components.
8) in the detection of computer-related components as much as possible with a digital multimeter, multimeter test such as the use of computer-related devices over when to use resistance 20KΩ impedance multimeter.
9) In the absence of absolute certainty in the case do not use test lamps to test any and computer-related devices.
10) Do not install the battery polarity is connected correctly.
11) No water in the washing vehicles, washing computers and related components.
12) fuel injection system, electric fuel pump by the air flow meter or computer control. After the ignition switch is turned on only when the engine is running or starting circuit when the pump can be connected. Non-modified fuel pump circuit, turn off the engine to prevent fuel exhaustion, fuel pump continues to operate a spark of fire.
13) car paint if the paint needs to enter the room, you must remove all the computers in order to avoid heat damage.
14) repair airbag vehicle, you must first disconnect the power after a few minutes to repair. Measured with a multimeter with non-airbag-related components and control devices cited violence. To prevent accidental air bag open.