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Home >> Mazda >> 1987 >> RX-7 Base, Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft Systems >> Trouble Shooting >> Alarm Code 4

Alarm Code 4

This is the Alarm Phase 1, Alarm sounds continuously, not intermittently. Disconnect control unit connector. Check if horn still sounds. If it doesn't, control unit is faulty. If it is ok, alarm circuit is faulty.