The first two days are busy repairing a car, a car advocate pushing a motorcycle to the shop, saying that this car is always battery loss, and today hit, to see.
Pick up a car to see, is a miscellaneous brand straddle ride motorcycle, outside watch some years. The owner said that his car battery loss is a frequent thing, as long as it is put a few days do not ride, when the car starts in the morning, the starter or turn feebly, or simply do not turn, it is difficult to start the vehicle, had to use foot kick.
Fortunately, the foot start is not bad, almost can start the engine, such as the motorcycle to the unit, and then press the electric start, can normal car.
In this case, either the charge is insufficient, or the battery does not store electricity, or it is a leakage.
First check the vehicle, the motorcycle charging system charging voltage, charging current detection, found that the charging system technology is in good condition, nothing wrong. The battery was tested again, and there was nothing wrong with it. In this case, it is usually suspected that there is a leakage point on the car.
Leakage this situation, there is a small method can be very convenient to check out, the owner even at home, can also operate. Specific methods are as follows: often deficient electric motorcycle, if take a day or two days later can't electric start, then go home to ride on your normal after parking, can take out insurance tube if the next day or the third day, transport, then put insurance tube, the launch vehicle, if it can be started, you can confirm there is a obvious leakage phenomenon.
Then back to the car for analysis, from the electrical system fault characteristics and inspection results, there must be leakage in the electrical system of the car.
Checking for specific electrical leaks and eliminating them is the usual mode of repair for such vehicles. The checking methods are multimeter and charging detector.
This section describes how to use a multimeter for detection. Turn off the ignition switch, remove the ground terminal on the negative terminal of the battery, use the DC current range of 25mA multimeter, connect the multimeter series to the electrical system, the black meter pen is connected to the negative terminal of the battery, the red meter pen is connected to the ground terminal, detect the leakage current of the electrical system.
After detection, the reading of the car multimeter needle is 13mA, generally speaking, the normal leakage current of the motorcycle electrical system should not be greater than 1mA, the 13mA has been a big.
Another way is to use MSC charging detector, as shown in the picture below. After connecting the charging detector to the front and back of the safeguard tube, three clips can be clamped according to the picture, and the voltage and leakage current of the current battery can be displayed at the same time, which is particularly convenient.
Due to the complexity of the electrical circuit connection of the motorcycle electrical system, there are many electrical parts and connection lines that may produce leakage current, so it is not convenient to use a multimeter to check one by one.
Multimeter or MSC charge detector can be continue concatenated in electric system, respectively, in turn, disconnect all electrical components plug wire and cable connections, then observe the changes of multimeter or MSC charge detector readings, if is when disconnecting a electrical parts splice connection, wire and cable equipment readings by 13 ma drop to zero, It indicates that the disconnected electrical part has a leakage fault.
In this way, disconnect the cable harness connectors of the stabilized rectifier and ignition switch in turn, and the reading is still 13mA, indicating that there is no leakage fault of the stabilized rectifier and ignition switch.
Continue in turn off other parts of the electrical plug wire and cable testing, when disconnecting the engine tachometer splice pieces, wire and cable equipment readings by 13 ma drop to zero, indicates a engine tachometer leakage failure, in order to prevent the lapse in judgment, and connect engine tachometer splice validation, wire and cable equipment readings above freezing to 13 ma again, After repeated inspection, it is confirmed that the engine tachometer has leakage fault.