【Fault description】
    The car suddenly a sudden turn off the car, after the car can not immediately car, wait a few minutes after the car, so repeated.
    【Inspection process】
    The ignition system failure, the ignition coil resistance is normal, with the car power to the primary coil through, power off the high voltage flashover results are good, check and ignition directly related to the Hall sensor operating voltage of 0V (normally should be 5V) The sensor operating voltage directly from the engine control computer to provide computer-to-sensor-side conduction is good, replace the computer failure phenomenon remains the same, indicating that the computer no problem, but does not rule out the computer to provide power lines are faulty. So the ignition switch to "ON" position, with a digital multimeter to measure the computer's power line voltage is 0 volts, and finally determine the computer control relay or related lines are faulty. Click to watch maintenance video teaching
    【Fault Analysis】
    The computer control relay is normally open, the relay coil is energized and the contacts are closed to supply power to the engine control computer. In the relay with the coil reverse parallel to a discharge diode, the role is to eliminate the coil of the induced potential. The temperature of the low diode is working properly, the working time is long, the diode is raised to a certain temperature due to thermal breakdown (like short circuit), the coil does not pass through, so the relay contacts are disconnected, the engine controls the computer to power off, Turn off, wait a few minutes after the diode temperature drop, work back to normal, so there repeated.
    【Maintenance】
    Replacement of a new relay after the test troubleshooting.