What is the reason for the 48V power failure displayed on the Mercedes-Benz C260?
1 Answers
It may be an electrical equipment failure. Here are the methods to troubleshoot electrical equipment failures: Resistance Test Method: This method involves using the resistance range of a multimeter to measure whether components such as motors, circuits, and contacts meet the nominal usage values and whether they are conducting or open. Alternatively, a megohmmeter can be used to measure the insulation resistance between phases or between phase and ground. During measurement, pay attention to selecting the appropriate range and verifying the accuracy of the meter. Generally, when using the resistance method, it is common practice to start with a low range. Also, ensure that the circuit being measured is not live and never measure under power. Voltage Test Method: The voltage test method involves using the corresponding voltage range of a multimeter to measure the voltage values in a circuit. Typically, measurements may include the voltage of the power supply or load, or sometimes the open-circuit voltage to determine if the circuit is functioning normally. When measuring, pay attention to the meter's range and select an appropriate scale. Generally, when measuring unknown AC or open-circuit voltages, it is advisable to use the highest voltage range to avoid operating under high voltage with a low range, which could damage the meter. Additionally, when measuring DC, be mindful of the positive and negative polarities.
