The Sparrow Pride in 2011 lasted about 56,000 kilometers. According to customers, the car has traveled 55213 kilometers. A few days ago, a faulty light suddenly appeared in the driving process. When the engine goes out, it can't start again.

　　故障診斷:預約客戶后，安排維修技術人員對車輛進行檢查，使用SM3診斷儀器對發動機診斷系統進行檢查。故障代碼顯示P0890自閉繼電器故障。為了確定是否偶爾出現故障，維修人員會清除故障代碼，然后打開鑰匙，車輛順利啟動。

　　Fault Diagnosis: After booking customers, arrange maintenance technicians to inspect the vehicle, and use SM3 diagnostic instrument to inspect the engine diagnostic system. The fault code shows the fault of P0890 self-closing relay. In order to determine whether there are occasional failures, maintenance personnel will clear the fault code, and then open the key, the vehicle starts smoothly.

　　似乎與報道的返修現象不同，客戶陪同的路檢沒有發現異常。這真的是由于未知原因造成的意外故障嗎?出乎意料的是，當我進入車站時，我撞上了一個減速帶，看到儀表上的AT油在閃爍。然后我進入車間關車，連接診斷儀器檢查故障代碼，原來的故障代碼。

　　It seems that unlike the reported repairs, no abnormalities were found in the road inspection accompanied by customers. Is this really an accident caused by an unknown cause? Unexpectedly, when I entered the station, I hit a deceleration belt and saw AT oil flashing on the instrument. Then I went into the workshop and shut down, connected the diagnostic instrument to check the fault code, the original fault code.

　　當你試圖重新啟動汽車時，你會發現汽車沒有啟動，你只會聽到啟動器上“噠噠噠”的聲音。盡管故障再次出現，技術員認為可能是電池故障或發電機故障。從倉庫借一個新的蓄電池，但安裝后仍不能啟動。

　　When you try to restart the car, you will find that the car did not start, you will only hear the "beep" sound on the starter. Despite the recurrence of the failure, technicians believe that it may be a battery failure or a generator failure. A new battery was borrowed from the warehouse, but it could not be started after installation.

　　根據故障代碼，發現故障代碼所指的繼電器實際上是TCM電源。

　　According to the fault code, it is found that the relay referred to by the fault code is actually the TCM power supply.

　　繼電器各回路狀態良好，無松動現象。把它拿下來，檢查繼電器本身。靜態和動態測試都是正常的。這懷疑中醫內部接觸不良現象存在于本身,而是因為這個網站沒有模型的中醫,中醫加載,所以不得不繼電器,試著用手搖晃兩部分測試和震動皮瓣與中醫,故障沒有出現,但是當帕特繼電器在石油儀器上突然亮了起來,立即關閉發動機,車輛不能重新開始。

　　Each circuit of the relay is in good condition without loosening. Take it down and check the relay itself. Static and dynamic tests are normal. This suspicion is that the harmful internal contact of TCM exists in itself, but because the website has no model of TCM, TCM loading, so it has to relay, try to shake two parts of the test and vibration skin flaps and TCM, the failure did not appear, but when the Pat relay suddenly lights up on the petroleum instrument, immediately shut down the engine. Vehicles can't start over.

　　此時，可以說缺陷零件終于被識別出來了。這是中醫繼電器，內部有松動的地方，這將發生在通過顛簸的道路。更換繼電器，故障排除。

　　At this point, it can be said that the defective parts were finally identified. This is a traditional Chinese medicine relay. There is a loosening place in it. This will happen on the bumpy road. Replace relay and troubleshoot.

　　故障總結:在維修口腔時，當出現一些故障時，一定要遵循故障判斷的邏輯，尤其是當診斷儀器有比較清晰的故障代碼可供參考時，一定不能忽視。

　　Fault summary: When repairing oral cavity, we must follow the logic of fault judgment when some faults occur, especially when the diagnostic instrument has a clear fault code for reference, it must not be ignored.

　　本案例由于維修技師的經驗，從開機時“噠噠”的聲音，得到了電池故障，于是繞道而行。

　　In this case, due to the experience of maintenance technicians, the battery malfunction was obtained from the "beep" sound when the machine was turned on, so it was detoured.

　　三包政策的出臺對我們的維修工作也是一個考驗，在短時間內對車輛進行維修，那么故障判斷就顯得尤為重要。

　　The introduction of the three-package policy is also a test for our maintenance work. If the vehicle is repaired in a short time, the fault diagnosis is particularly important.