Figure 1 Schematic diagram of mechanical structures Symptoms: a 2003 article Shanghai Public B51.8T Passat sedan, equipped with ZF of Germany produced the 01V type (5HP-19FL) Hand / from one 5-speed electronically controlled automatic Transmission , Mileage to 120,000 km. The car’s transmission had been repaired in the other repair shop, to repair the fault is no reverse gear, the impact of forward gears, no reptiles and transmission within Abnormal noise .
Troubleshooting: plant maintenance personnel in the next car after the repair, but repairs to a certain degree it difficult to continue. I take car to the maintenance staff asked them about their maintenance through. Maintenance personnel is that statement: First connection failure Diagnostic On the transmission electronic control system was tested, only found a P0730 fault code. When checking the transmission oil level and found missing at least 2L of about ATF, ATF again added test, fault phenomenon remains intact. Because the new automatic transmission plant maintenance experience failure is not very rich, so can only do simple dismantling. Remove the transmission oil pan, ATF found that black and pollution, but did not find too many Wear and tear Particles, so they remove transmission hydraulic control valve body to decompose wash, in the cleaning process does not find all slide valve have wear and cable wiring. Refitted after the test, the results reverse gear still no crawling process, only the increase Accelerator To 2000r/min be driving around the same time, there is creeping forward while blocking cold hot car is not crawling, it does not conduct road tests. .