日产天籁，报ECM发动机控制模块备用电路。

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玛萨拉蒂倒车提示喇叭，已经提供线路图及备件位置

需要用玛莎拉蒂专用电脑匹配

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

根据维修技师提问内容通过沟通了解车辆情况通过图文指导拆除螺丝

提问，玛莎拉蒂总裁11款车型气囊电脑在哪里？ 经查询资料得知，玛莎拉蒂11款总裁的气囊电脑在中控仪表台的下方。拆卸气囊电脑首先需要拆掉中央控制台的空调出风面板， 还要拆掉中央控制台的通道。最后 我们可以通过副驾驶侧看到气囊电脑。在中央控制台前部安装！

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

更换正时调节器就Ok了，感谢对汽车大师的支持。

黄色的发动机故障灯 是为了提示驾驶员 当前的发动机不正常 但这个不正常不是绝对的 比如 哪个传感器虚接 线路虚接 汽油品质不好等 都会导致故障灯点亮 有的不影响正常驾驶 具体是什么故障 怎么维修 就需要借助设备来看当前究竟是什么故障