Automotive electronic control engine lubrication system structure and the traditional engine is basically the same, in the instrument instructions used in the oil pressure warning light to display. Oil pressure warning light flashes, it shows that oil pressure problems, need to stop the inspection and troubleshooting.
    For engines with oil pressure alarm and oil pressure warning lights, you should first know what is normal and under what circumstances is not normal.
    Usually the engine idling work, the engine oil pressure can not be less than 0.03MPa, when the engine speed is greater than 1800r / min, the oil pressure can not be less than 0.18MPa. When the engine just started, the oil pressure is lower than 0.03MPa, oil pressure warning light should be lit, the alarm should be activated; when driving, the engine speed is higher, and oil pressure below 0.18MPa, the warning light should be lit , The alarm should be alarm.
    Electronically controlled engine lubrication system failure type and the traditional engine is basically the same. Eliminate this problem, you should first check the circuit failure, and then check other aspects. If the instrument, then, should try a special instrument to check. For example, the public company to provide special tools V.A.GB43 and diode test pen to determine the fault, without these instruments, can also use oil pressure gauge and multimeter to determine the fault.
    For example, Jetta sedan engine can be used to diagnose oil pressure gauge and multimeter. When the engine is running idle, the oil pressure warning light will flash. If the state of the 30kPa oil pressure switch is closed or disconnected, the second step is to remove the oil pressure switch and replace the oil pressure gauge. Three steps to start the engine and make it idle operation, read the oil pressure value, with 30kPa hydraulic switch state to analyze. If the oil pressure is greater than 30kPa, 30kPa switch is closed, indicating 30kPa switch damage; if the pressure is less than 30kPa, indicating that the idling oil pressure is too low, if the oil pressure is greater than 30kPa, 30kPa switch is disconnected, indicating the alarm and control circuit is faulty.
    Engine speed higher than 2050r / min, the oil warning light flashes, buzzer sound, then you can first use the multimeter ohm file check 180kPa oil pressure switch is open or closed; the second step to remove the oil pressure switch , The oil pressure gauge on the facelift; the third step to start the engine and 2200r / min speed operation, read the oil pressure value, at the same time with 180kPa oil pressure off the state analysis. If the oil pressure is greater than 180kPa, 180kPa switch is off, indicating 180kPa switch damage; if the oil pressure is less than 180kPa, indicating that the high-speed oil pressure is too low; if the oil pressure is greater than 180kPa, 180kPa switch is in the closed state, indicating the alarm and control circuit failure.
    Engine Idle oil pressure warning light flashes, the speed exceeds 2050r / min when the buzzer alarm. This failure due to the oil pressure is too low due to the exclusion method with the same general car engine, should check the oil oil, oil filter, oil pump, bearing gap and so on.