Electrical Load System
WARNING: This page is about a different car, the 1995 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Remove Central Processing Unit (CPU) from behind left side of instrument panel. Measure voltage at specified terminals of CPU connector. See CPU VOLTAGE CHART. See Fig 1 . If voltages are incorrect, check appropriate circuit. If all voltages are correct and problem exists, replace CPU.