Warning Light Flashes 4 Times
- Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. Disconnect diagnostic module Black and Gray connectors. See Figure
or Figure
. Check continuity between Black connector Green/White wire terminals. If continuity is not present, replace wire harness.
- If continuity is present, check continuity between Black connector Green wire and ground (1990 Miata), or between Gray connector Red/Black wire terminal and ground (all others). If continuity is not present, go to step 4). If continuity is present, check continuity between Black connector Green wire terminal and Gray connector Green/Black wire terminal. If continuity is present, go to step 4) (1990 Miata), or step 5) (all others).
- If continuity is not present, disconnect rear safing sensor connectors. Check continuity between sensor terminals "B" and "E". See Fig 1
. If continuity is present, replace wire harness. If continuity is not present, replace rear safing sensor.
- Check rear safing sensor installation; repair as necessary. If installation is okay, disconnect rear safing sensor connectors. Check continuity between sensor terminal "A" and ground. If continuity is not present, replace rear safing sensor. If continuity is present, replace wire harness.
- Disconnect diagnostic connector. Check continuity between Black connector Green/White wire and ground. If continuity is present, replace wire harness. If continuity is not present, repeat step 4).
Courtesy of MAZDA MOTORS CORP.