Continuity Check
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1994 Mazda MX-5 Miata, 1992 Mazda MX-5 Miata, 1992 Mazda MPV, 1992 Mazda B2200, and 1991 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect HOLD switch. Check continuity between terminals. With switch released, there should be no continuity. With switch depressed, continuity should exist. If continuity is not as described, replace switch. If continuity is as described, check wiring harness between hold switch and PCMT and between hold switch and ground.