How do you troubleshoot a 1994 achieva?

To troubleshoot a 1994 Achieva, start by checking the battery and connections for any signs of corrosion or loose wires. Next, inspect the fuses and relays in the fuse box, replacing any that are blown. If the engine won't start, listen for the fuel pump activation when the ignition is turned on, and check for spark at the spark plugs. Additionally, use an OBD-I scanner to retrieve any diagnostic codes if the check engine light is on, helping to pinpoint specific issues.