Failure symptoms: the use of air conditioning when the engine cooling water temperature rise, the brake has sound.
    Troubleshooting: to investigate, because there is no driving, so what symptoms can not see. The pointer to the water temperature table in the running has risen to the top, the pointer to the water temperature table when parking is also high. General hot weather even if the parking, air conditioning is also open, the engine is gradually a little overheating. Open the engine compartment cover, see the fan or get inside the suction, but feel the air volume is a bit weak, maybe the reason here.
    Turn the fan by hand and feel the resistance of the fan coupler is a bit small. So the reason is determined on the coupler, and the coupler is replaced. After the replacement of the water temperature table pointer a little bit down, but still can not meet the requirements. Replace the radiator core work found in the timing belt is not very good, so also replaced.
    After a period of time and found that the brake has a different sound. Test driving, without braking when the car is quite quiet, but a step on the brake pedal, you can hear quite blunt sound. Decrease the brake a look, the brake pads have a lot of margin, but the disc rotor wear a lot, while the front wheel bearings were slightly worn, so replaced. Rear wheel disc rotor and the front wheel, so the rear wheel of the rotor is also replaced. After the completion of the test run, the results of the vehicle quite quiet.
    After a while, the brake alarm light. Previously confirmed the caliper, it is estimated that there will be no problem. Investigate the brake tank, the liquid level has dropped to the lower limit position. Then it must be where the leakage brake fluid. A trace of the main cylinder on the back of the traces of leakage. So replace the master cylinder.
    And then investigate the other places with or without leakage, the results of the internal brake no problem, there is no abnormal bending on the road, did not see the traces of the impact. But found in the next cover with a brake fluid, open the lower cover to find ABS actuator leakage. Because the ABS actuator is an inseparable part, the actuator assembly is replaced.
    Carried out for a period of observation, the results did not have any problems, the maintenance of the end.