Ignition System Troubleshooting Methods?

[McHaven]

Here are the troubleshooting methods for the ignition system: 1. For ignition system faults, first start the engine and check if the warning light is illuminated. If it is, use a fault code reader to retrieve the fault codes. 2. Diagnose faults in the low-voltage circuit based on the fault code content. If the warning light is normal, then check the high-voltage circuit of the ignition system. Common causes of ignition system faults include: 1. Difficulty starting: Mainly manifests as trouble during initial startup, normal idling, normal acceleration in neutral, occasional jerking when starting, and stalling easily when starting on an incline. 2. Engine misfire: The engine misfire mainly manifests as no faults during idling and low speeds, but starts to shake after continuous high-speed driving for a period of time.