Shift Lock Testing: RX7

Disconnect negative battery cable. Remove gear selector console cover. Disconnect Park switch connector "A". See Fig 1 .
Place gear selector in Park. Continuity should be present between both Black wires. Depress gear selector release button and ensure no continuity is present. If Park switch works as described, go to next step. If Park switch does not work as described, replace Park switch.
Disconnect shift-lock actuator connector. Turn ignition on. Check terminal voltages and continuity. See Fig 1 . If not as specified, replace shift-lock actuator.

Fig 1: Testing Shift Lock Actuator, Park Switch & Connectors

Courtesy of MAZDA MOTORS CORP.