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一辆别克GLX轿车,累计行驶8万km,自动变速器出现换档冲击过大,行驶油耗增加的故障。据车主反映,该车曾因上述故障在其他修理厂进行过多次维修,先后更换过TCC(液力变矩器锁止离合器)电磁阀和换档电磁阀等,但故障均未能排除。对该车路试,发现在换档时自动变速器有明显的顿车现象,换档冲击严重。连接元征X-431故障检测仪进行检测,调得的故障代码为P1860——液力变矩器锁止离合器脉冲宽度调制电磁阀电路故障。该故障提示明显指出是自动变速器电控部分
A Buick GLX sedan, traveling a total of 80,000 km, the automatic transmission shift shocks occur too much, increased fuel consumption driving fault. According to the owner, the car has been repaired in the other repair shop for the above-mentioned many repairs, has replaced the TCC (torque converter lock-up clutch) solenoid valve and shift solenoid valve, etc., but the failure can not be ruled out. On the road test, found that when the shift automatic transmission obvious Dayton car phenomenon, shift serious impact. Connect the yuan levy X-431 fault detector for testing, tune the fault code is P1860 - torque converter lock-up clutch pulse width modulation solenoid valve circuit failure. The fault prompts clearly pointed out that the automatic transmission electronic control part