Coolant Level Switch Inspection

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the coolant level switch.
Verify the continuity between the coolant level switch terminals.
- If the continuity is not as indicated, replace the coolant reserve tank. See Fig 1.
Fig 1: Coolant Level Switch Terminals Continuity
Courtesy of MAZDA MOTORS CORP.

Fig 2: Identifying Coolant Level Switch Terminals Connection
Courtesy of MAZDA MOTORS CORP.