What Causes No Response When Turning the Key and No Dashboard Lights?
1 Answers
No response when turning the key and no dashboard lights may indicate an issue with the car battery. Additionally, it's necessary to check if the starter fuse is blown. Below are solutions for dashboard lights not turning on: 1. Press the horn: Try pressing the horn to assess the battery's charge based on the horn's loudness. If the horn doesn't sound or is very weak, it indicates a depleted battery. Alternatively, try turning the key and listening carefully; if there's no sound at all, it likely means the battery is dead. 2. Low-voltage circuit fault: Common low-voltage circuit faults include insufficient battery charge, poor or tangled wiring connections, poor battery grounding, damaged distributor or Hall sensor, faulty ignition switch or poor wiring connections, and damaged transistor ignition control unit or poor wiring connections. Most low-voltage circuit faults are diagnosed using an ammeter or voltmeter to check each wire and eliminate the fault point. 3. High-voltage circuit fault: Common high-voltage circuit faults include detached or leaking high-voltage wires, cracked or punctured distributor cap, burnt or punctured distributor rotor, spark plug electrode gaps too large or too small, excessive spark plug carbon buildup, damaged spark plug insulators, and damaged ignition coil or detached wiring. Most high-voltage circuit faults are diagnosed using the high-voltage spark test method: detach the central high-voltage wire or a cylinder's high-voltage wire from the distributor, place the wire end 3-6mm away from the cylinder body, and start the engine to test for sparks. If there's a strong spark, the ignition system is functioning normally.
