Fuel Gauge Sender Unit (Sub)

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Remove the fuel gauge sender unit (sub). (See FUEL GAUGE SENDER UNIT REMOVAL/INSTALLATION [AWD] .)
Verify that the resistance at fuel gauge sender unit (sub) terminals B and A is as indicated in the chart according to the height of the float.

Fig 1: Measuring Resistance At Fuel Gauge Sender Unit (Sub) Terminals
Courtesy of MAZDA MOTORS CORP.

Fig 2: Fuel Gauge Sender Unit Resistance Graph
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the chart, replace the fuel gauge sender unit (sub).