Turbine Shaft Speed Sensor (A/T)
WARNING: This page is about a different car, the 1995 Mazda B4000, 1995 Mazda B3000, and 1995 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect sensor. Measure resistance between turbine shaft speed sensor terminals. If resistance is not 64-200 ohms, replace sensor.