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電噴柴油發(fā)動機通過隨車故障指示燈（閃碼）排除故障

2015/5/15 14:41:34

EFI diesel engine through the vehicle fault indicator (flash code) troubleshooting

控制器(ECU)具有故障自診斷功能，但沒有自清除歷史記錄的功能，一旦ECU檢測出電噴系統(tǒng)故障,將:

The controller (ECU) with fault self diagnosis function, but since there is no clear record function, once the ECU detect the EFI system fault, will:

1、產(chǎn)生對應的故障碼并存入內存。

1, produce a corresponding fault code and stored in memory.

2、依照故障的嚴重等級，自動進入不同的失效保護策略。

2, according to the severity of the fault, automatically enter the protection failure of different strategies.

3、大部分情況下，失效保護策略仍能保持發(fā)動機以降低功率的方式繼續(xù)工作。

3, in most cases, the failure protection strategy can still continue to work to keep the engine in order to reduce the power of the way.

4、極其嚴重的故障，失效保護策略會停止噴油，然后發(fā)動機停止運轉。

Fault 4, extremely serious, failure protection strategy will stop fuel injection, then the engine stops running.

5、出現(xiàn)故障閃碼后，可根據(jù)閃碼與對應的故障描述進行故障的

5, failure flash code, according to the flash code and the corresponding fault description of fault

排除。

Exclude.

6、閃碼的出現(xiàn)及讀取時，請開啟故障請求開關，診斷開關有中斷式的和復位式的兩種形式：對應整車是K65引腳線，開關出現(xiàn)短路，故障指示燈常亮，在實際過程中利用發(fā)動機故障指示燈讀取故障碼往往是不精確的，會出現(xiàn)偏差，給故障的診斷帶來不真實的現(xiàn)象，所以，最好利用專用診斷儀進行診斷。

6, flashing code and read, please open failure to request the switch and diagnostic switch interrupt and reset type two forms: the corresponding vehicle is K65 pin line, switch circuit, fault indicator light, in the actual process of using engine fault indicator read fault codes are often imprecise, deviation, for fault diagnosis and bring not true, so, it is best to use the special diagnostic instrument for diagnosis.

7、故障燈對應整車是K55，如果與ECU相連，故障燈出現(xiàn)常亮。

7, the corresponding vehicle fault light is K55, if ECU is connected, the fault often appears bright lights.

8、ECU故障診斷功能和故障碼：

8, function of ECU fault diagnosis and fault codes:

a）故障閃碼閃爍方式（以閃碼：5-5-3為例）

A) fault flash code flashing mode (with flash code: 5-5-3)

b) 故障代碼列表：故障代碼表的使用方法:讀取故障碼后，根據(jù)故障代碼表中的閃碼來查找是什么故障。對于故障級別的定義：

B) list of fault code: fault code table using the method: read the fault code, according to the fault code table in the flash code lookup is what kind of trouble. The definition of fault level:

0：表示錯誤不存儲，系統(tǒng)燈不亮

0: error storage, system does not light

1：表示錯誤存儲，系統(tǒng)燈不亮

1: error storage system, light is not bright

2：表示錯誤存儲，系統(tǒng)燈馬上亮

2: error storage system, lamp light immediately.

3：表示錯誤存儲，系統(tǒng)燈兩個駕駛循環(huán)后亮

3: storage system two error, the lamp light after the driving cycle

故障指示燈

Fault indicator

a)一般說明該燈位于儀表板上,形狀為發(fā)動機示意圖。電噴系統(tǒng)出現(xiàn)故障后點亮，燈亮時為黃色。

A) general description of the lamp is located on the dashboard, the shape for the engine schematic. Light failure of EFI system, light yellow.

打開點火開關后，系統(tǒng)先進行自檢，點亮故障燈。如無故障，則故障燈在自檢結束后自動熄滅。

After switching on the ignition system, the first self, light fault lamp. If there is no fault, then the fault lights automatically in self-test after the end.

電噴系統(tǒng)故障消失后，故障指示燈在下一駕駛循環(huán)自動熄滅。

EFI system fault disappears after the malfunction indicator lamp automatically extinguished in a driving cycle.

按下故障請求開關，如ECU存有故障代碼，該燈將按設定的閃碼閃爍。

The fault request switch, such as ECU have the fault code, the lights will be set according to the flash flash code.

b)通過故障指示燈讀取故障碼/故障閃碼的方法

B) through the fault indicator method of fault fault code reading / flash code

點火開關處于ON（電路接通）位置。

The ignition switch in the ON position (circuit).

待機與運行工況下均可進行。

Can stand with the operating conditions of.

按下—松開診斷請求開關即可激活閃碼。每一次操作只閃爍一個故障碼，依次進行即可讀完所有故障碼。

Press release - diagnosis request switch to activate flash code. Every operation only flashes a fault code, in order to read all the fault code.