What are the methods for checking car electrical leakage?
1 Answers
There are two methods to detect whether a car has electrical leakage: one is the current detection method, and the other is the empirical detection method. Below are the introductions to these methods: 1. Current Detection Method: Turn off the ignition switch, remove the negative terminal of the battery, set the digital multimeter to the ammeter (1A range), and then take two wires. Connect one end of each wire to the positive and negative probes of the multimeter, and the other end to the negative terminal post and the negative wire, respectively. Observe the ammeter reading. Compare the measured current value with the maintenance data to see if it is within the normal range. If the measured current value is too high, it indicates that the vehicle has an electrical leakage fault. The troubleshooting method involves pulling out each fuse one by one and observing the pointer changes. When removing a certain fuse causes the pointer to stop moving, the fault point is in the circuit or appliance connected to that fuse. Similar to the current detection method, by consulting the circuit diagram or checking the wiring direction, trace the line to find the damaged part for repair. 2. Empirical Detection Method: Turn off the ignition switch, remove the negative terminal of the battery, and then touch the wire to the negative terminal post of the battery, observing the strength of the spark. The stronger the spark, the more severe the electrical leakage phenomenon.
