How do you find the PCM on a 1998 Mazda b4000?

To locate the Powertrain Control Module (PCM) on a 1998 Mazda B4000, open the driver's side door and look beneath the dashboard. The PCM is typically mounted on the driver's side, near the firewall, and may be secured by screws or clips. You may need to remove a cover or panel for better access. Always ensure the vehicle is turned off and the battery is disconnected before handling the PCM.