How would you troubleshoot a vehicle that won't start but has a good battery?

When troubleshooting a vehicle that won’t start but has a good battery, checking the starter, fuses, relays, and ignition system is crucial because these components directly affect the engine's ability to start. The starter motor is responsible for turning the engine over, and if it is malfunctioning, the vehicle will not start despite having power from the battery.

Fuses and relays are part of the electrical system that allows current to flow to various components. If a fuse is blown or a relay is faulty, it can interrupt the starting circuit and prevent the vehicle from starting. The ignition system is also fundamental, as it generates the spark needed to ignite the fuel-air mixture in the engine. If any part of this system is compromised, it can result in a no-start condition.

In contrast, the other options are less relevant. Replacing the battery would not address the underlying issue since the battery is already confirmed as being in good condition. Inspecting the fuel tank may be necessary if the symptoms suggest fuel starvation, but in a no-start scenario with a confirmed good battery, it is often secondary to checking the electrical components first. Examining the tires for pressure is not applicable to the starting issue, as tire pressure does not influence the engine's