天冷了以后有3次冷车打火缺缸，明显异响。 这几天天气回温，发动机故障灯亮了。

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从提供的录音听，这是启动机异响，可以先保养一下启动机

动力方面，建议清洗油路积碳试试，刹车希望检查刹车盘片！！

玛莎拉蒂GT车型报故障码c1023 经查询得知是右后侧减震线束故障导致 建议检查从模块到右后减震器的线束是否有断路和短路

真空、二次空气泵、阀门都没有部题，哪就确定故障原因为歧管二次空气通道堵塞，通一下就可以了。

建议首先确定一下意向是从哪个部位发出来的然后再走一的缩小范围

玛萨拉蒂倒车提示喇叭，已经提供线路图及备件位置

可能原因： 正时变速器熔断器 变位器 发动机控制节点 (NCM) 检查确认 - Digital Multimeter - Oscilloscope - Box 150way (cod. xxxxxx – HW01BOX) - Motronic Interconnector (cod. xxxxxxxx) - Diagnosis system + - Battery disconnected ECU disconnected 1 A01 GND Electronic ground 1 (chassis) 200 Ω < 1Ω 2 A02 GND Electronic ground 2 (chassis) 200 Ω < 1Ω 3 A04 GND Electronic ground 3 (chassis) 200 Ω < 1Ω 4 A53 GND Reference Ground 200 Ω < 1Ω 5 A46 A01 GND signal from inertial switch 200 Ω < 1Ω 6 B36 B51 Engine revolution sensor impedance 2K Ω 1000Ω ±10% 7 A13 A64 Air flow temperature sensor impedance (signal) 20k Ω 2kΩ±5% 8 A85 A64 Air flow sensor impedance (signal) 2M Ω 270kΩ ±10% 9 B10 B14 Internal temperature sensor (engine) 2M Ω To temperature environment 10 A15 A53 External temperature signal (radiator) 2M Ω To temperature environment 11 A67 A01 C-CAN line isolation 2M Ω 12 A68 A01 C-CAN line isolation 2M Ω 13 A67 A68 Public C-CAN Network impedance 200 Ω 60Ω ±5% Battery disconnected ECU connected 14 A67 A68 Public C-CAN Network impedance 200 Ω 60Ω ±5% -30°C = 40KΩ 130°C = 90Ω - Key in STOP position. - Disconnect power supply from the vehicle using battery disconnector. - Connect power supply unit to battery in parallel. - Check condition of protection fuses. - Visually check the condition of the connections present on the wiring of the components being examined. - Connect box (cod. xxxxxxxx), the 3 Male-Male cable bundles 50PIN and the Maserati interconnector (cod. xxxxxxxxx) to the vehicle wiring, leaving the ECU disconnected. Necessary equipment Preliminary operations for checks N Tester Terminals ..\..\immagini\Ferrari_Cavallo.wmf Maserati M139 4.7 RST - Engine Control Node (Motronic ME9) ../../immagini/NCM_CENTRALINA.jpg DIAGNOSIS DATA SHEET N. 01 2,5KΩ ±10% >1MΩ Component / Check Operations Range and U.M. Value Notes 018_0177_DX 1/5 + - N Tester Terminals Component / Check Operations Range and U.M. Value Notes Battery connected ECU disconnected 15 A92 A01 Permanent power supply (+30) 20 V= Vbat B