Faults caused by the electronic control unit (ECU) of the engine.
Generally, the ECU of low-end cars cannot detect faults in the high-voltage ignition circuit caused by issues such as a malfunctioning ignition coil, contaminated or damaged spark plugs, or a broken core in the high-voltage wire.
Release time:
2024-10-26
The electronic control engine computer ECU cannot monitor faults caused by the following reasons.
(1) The ECU of general low-end vehicles cannot detect faults in the high-voltage ignition circuit caused by ignition coil failure, spark plug contamination or damage, or broken high-voltage wire cores.
(2) The ECU cannot detect fuel intake faults caused by blockage of the electric gasoline pump inlet filter, fuel filter pipeline, or crushing of the fuel inlet or return pipeline.
Smooth, or the mixture is too thin. The rearview mirror of the Mercedes-Benz car is loose.
(3) The ECU cannot monitor the air filter inlet or blockage or throttling of the air filter. Solutions for faults caused by changes in air flow rate or vibrations. Summary of commonly used parts for maintenance and repair of Mercedes-Benz.
(4) The ECU cannot monitor the high and low cylinder pressure, or the uniformity of pressure in each cylinder.
(5) The ECU cannot monitor damage to plugs and pins, but will generate fault codes caused by such situations. (6) The ECU cannot monitor poor grounding, but will generate fault codes caused by such situations.
(7) The ECU cannot monitor leaks or throttling in the vacuum lines of the vacuum booster in the engine control system. However, the vacuum level of the intake manifold absolute pressure sensor will be monitored, and the ECU will also record fault codes.
The above 10 items are the reasons for faults that the electronic control engine cannot detect, which should be noted when repairing the electronic control engine. Whether it is an electronic control fault or a mechanical fault, it is necessary to correctly distinguish the location and performance characteristics to accurately and quickly identify and eliminate the fault.
During the inspection, if the engine has a fault and the engine fault warning light is not on (no fault codes displayed), it indicates that the engine fault may be in the mechanical part.
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Faults caused by the electronic control unit (ECU) of the engine.
Generally, the ECU of low-end cars cannot detect faults in the high-voltage ignition circuit caused by issues such as a malfunctioning ignition coil, contaminated or damaged spark plugs, or a broken core in the high-voltage wire.
2024-10-26
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