Current Sensor Removal

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the current sensor connector.
Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Loosen the current sensor nut while fixing the negative battery terminal using a wrench.

Fig 1: Loosening Current Sensor Mounting Nut Using Tool
Courtesy of MAZDA MOTORS CORP.
Remove the current sensor.

Fig 2: Identifying Current Sensor Components
Courtesy of MAZDA MOTORS CORP.