It is necessary to write the following contents: 1. The fault is: the car continuously falters when driving in 4th gear and downshifts in 3rd gear, similar to passing through the deceleration belt, and also sends out a "click" sound; 2. The diagnosis and maintenance process: (1) using the ODIS diagnostic instrument to conduct guided fault query on the car, and no fault code is found in the relevant control unit; (2) reading all data measurement values from the transmission control unit of the car All data measured by the engine control unit are normal; (3) raise the vehicle to check whether the transmission fluid level is normal, check the transmission case and find no trace of external force, and no abnormality is found in the transmission circuit; (4) check the tpi2056101 / 3 guidance document, and adjust the dual mass flywheel according to the guidance document, and the test failure still exists after too many times The fault of repeated operation is still not eliminated; (5) the basic setting of transmission control unit is 1-5, and the fault still exists after repeated operation for more than 10 times; (6) the problem can not be solved by turning off the sliding mode; 3. Technical conclusion: after communication with the Technical Teacher of the main engine plant, the final conclusion is that the imported clutch needs to be replaced; 4. Maintenance result: the imported clutch needs to be replaced for troubleshooting;<br>
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