Changsha automotive air conditioning odor processing company Changsha Huaxing auto repair shop specializing in vehicle maintenance, vehicle rescue service 24 hours, sheet metal painting, maintenance, car air conditioning deodorant, car smell processing, paint plating crystal, polishing, waxing, insurance claims, car Service agents, car painting, car, paint care and other services. Changsha automotive air conditioning odor processing company Changsha Huaxing car repair shop Mr. Cheng: 13908462346 Tang: 13707480626 Website:? Http: //www.huaxingqx.com/ Address:? Furong District, Changsha Yuanda Road Ma Poling (Mapo Road Primary School opposite) Changsha Automobile Air Conditioning smell common diagnostic company: According to the car reflects the owner, this car ABS previous work has been normal since come a road car after the rocks have this fault. Maintenance personnel to use VAG1 551 inquiries fault, found no fault codes, road test, everything normal, the fault does not appear, but to notify the owner before running for some time to come back to check. Can car had just left a few minutes, the owner will come back and say the fault appeared. So maintenance personnel with VAG1 551 test, not any fault occurs. Why do I test failures do not appear 7 There must be a reason, stumbled on the driver's seat of VAG1 551, think of it, when the vehicle is in motion the process of ABS self-diagnosis function is turned off. If you enter the self-diagnosis function is used in the parking VAG1 551, but does not exit the self-diagnosis function when the vehicle is traveling, the ABS system functions will be closed. Then re-test, this is not connected VAG1 551. Sure enough, a failure, and the car just as the owner said, as long as the brake pedal during driving, ABS, work. With V.A.G1 551 Interrogate fault and not the fault storage. ABS pumps work ahead, the signal must be taken with a sensor-related. So the two front and two rear wheel speed sensors simultaneously replaced, re-test failure remains. Failure may occur on the line, there is no fault line, so the failure to lock the ABS pump. The consent of the owner. Replace the ABS pump and its exhaust. Test again. Failure remains. Where is the problem then? Re test read data stream (note this time ABS function interrupt). Read the wheel speed of each wheel 002 in the display group. At this time a new discovery, data display area 2 of abnormal changes, lack of coordination with the other three rounds, when the wheel speed of the other three rounds of 47km / h, the display area will be 2 wheel speed suddenly drop to 35km / h back to 47km / h. When the speed down to 7km / h, the display area of ??the wheel speed suddenly drop to 3km / h. 2 corresponding to the display area is a right front wheel so to say, it must be the right front wheel of the signal is wrong. Can not fault the line and the sensor, to look at the gap between the right front wheel speed sensor and target wheel Remove the right front wheel and brake discs, we found a tooth target wheel has been a serious distortion. Changsha automotive air conditioning odor processing company answer finally surfaced replacement target round, again test, troubleshooting a month after returning, vehicle everything is normal. Fault summary: Troubleshooting can be said to go a lot of detours, reasons: ① understanding of the principles of the ABS system is not enough for the owners to provide profound clues placed no serious understanding. The owner said after running for some fault in the way the rocks appear, and on that target wheel teeth damaged by a stone exactly caused this is a good clue. It did not cause me attention, which is why we work often Ignore the interrogation. "Changsha automotive air conditioning odor processing company