Basic methods of fault diagnosis for electronically controlled engines.

The fault diagnosis of the electronic control system of the electronically controlled engine shall be carried out according to the following procedures: b#uNdq3 1. Ask the user about the time, phenomenon, situation at that time, the cause of the fault and whether to overhaul or disassemble it. "0 * yd [2 2], initially determine the fault range and location. s & ltz` & ltHRE 3。 Call up the fault code and find out the fault content. q！ 9 4, according to the fault code shows the fault range, maintenance, pay special attention to whether the connector is loose, fall off, wire connection is correct. 1iA0+Ex(j 5, after maintenance, verify whether the fault has been eliminated. & gtM$jJlAv8 6。 If the fault code cannot be called out, or the fault content cannot be found after calling out, the fault range can be roughly judged according to the fault phenomenon, and the working performance of components can be checked one by one to eliminate the fault. $ol]G`+ II。 Common fault diagnosis rt rPRR\:" 1. The engine won't start or it is difficult to start.