Breakdown phenomenon
Delay of occurrence brow of the appearance after colliding before WEY VV5 of one minister city falls breakdown, ESP breakdown, ACC breakdown, FCE/AEB is not usable
Case study
ACC radar breakdown
Wiring harness breakdown
Radar calibration breakdown
Other breakdown
Breakdown is diagnosed
Undertake an accident tear open through communicating this car with student above all outfit, accident of right front door is bumped relatively serious, change door and door wiring harness, and tear open outfit bumper and ACC of front door radar
Had undertaken tearing open installing to ACC radar in tearing open outfit process
Tear open next radar to undertake examination and watch bracket to whether be out of shape, radar adjusts screw to whether damage, did not see through the examination unusual
Use path connects a detector to enter ACC system to read take breakdown to be angle deviation too big
According to breakdown code the analysis is the diagonal in tearing open outfit process to spend the shift that has a mistake, want to undertake demarcate, demarcate needs special tool, because do not have special tool, so preparation buys a gradienter to undertake adjustment to hardware store
Gradienter of a smooth feet is bought in hardware store, undertake calibration to radar angle, if deviation too congress is brought about match failure
After undertaking to radar the level is adjusted, need detector undertakes sparking study, use path connects what the detector can have this model to read take malfunction code and cleared malfunction code, but the demarcate after making work this one flow,
Cause study failure
Because,connect a detector to adjust a function without this, must change a detector to undertake maintaining so, below the condition that sought a 431 detectors, without VV5 this model can choose, this model belongs to new fund model, bring about cannot enter this system to detect maintenance, but this model belongs to Great Wall banner to fall, so other model may configure this function, entered H7 model to find ACC demarcate program so
Click flow of junior travel demarcate to learn, already after the speed of prep above 51KM undertakes travel 5 minutes, instrument malfunction lamp goes out, this function returns to normal,
Breakdown summary
In maintaining a course we should be good at summing up, reasonable use equipment, because this model is new fund model, be in not only the circumstance of check, the equipment of model of very much new fund does not have development, want to use motion equipment and sharp mind neatly, cannot act wilfully, make maintenance enters deadlock.
