SKYACTIV-G 2.5, SKYACTIV-G 2.5T

Perform the "Fuel Line Safety Procedure" referring to the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION)] .) (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.5T] .)
If the fuel gauge level indicates 8/16 or more, refer to the "FUEL DRAINING PROCEDURE" and drain the fuel. (See FUEL DRAINING PROCEDURE [SKYACTIV-G (WITH CYLINDER DEACTIVATION)] .) (See FUEL DRAINING PROCEDURE [SKYACTIV-G 2.5T] .)
Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the fuel gauge sender unit (sub). (See FUEL GAUGE SENDER UNIT REMOVAL/INSTALLATION .)

Verify that the resistance at fuel gauge sender unit terminals A and C is as follows according to the height of the float.

Resistance when float is in the highest position

Resistance when float is in the lowest position

197-203 ohms

Courtesy of MAZDA MOTORS CORP.

If the resistance is not within the specification, replace the fuel gauge sender unit. (See FUEL GAUGE SENDER UNIT REMOVAL/INSTALLATION .)