Fuel Gauge Sender Unit Inspection

WARNING:

Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure" to prevent the fuel from spraying.
- Fuel may cause irritation if it comes in contact with skin and eyes.
- If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
A person charged with static electricity could cause a fire or explosion, resulting in death or serious injury. Before draining fuel, make sure to discharge static electricity by touching the vehicle body.

CAUTION:

Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting using a cloth or soft brush, and make sure that it is free of foreign material.

NOTE:

The fuel gauge sender unit is located in the fuel pump unit. Therefore, when replacing the fuel gauge sender unit, refer to "FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY". (See FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY [SKYACTIV-G 2.0] .)

Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.0] .)
If the fuel gauge level indicates 15/16 or more, refer to the "FUEL DRAINING PROCEDURE" and drain the fuel. (See FUEL DRAINING PROCEDURE [SKYACTIV-G 2.0] .)
Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Seat (LH) (See SEAT REMOVAL/INSTALLATION .)
2. Selector lever knob (AT) (See AUTOMATIC TRANSMISSION SHIFT MECHANISM REMOVAL/INSTALLATION .)
3. Shift lever knob (MT)
4. Shift panel component (See SHIFT PANEL REMOVAL/INSTALLATION .)
5. Upper panel (See UPPER PANEL REMOVAL/INSTALLATION .)
6. Parking brake lever boot panel (See PARKING BRAKE LEVER BOOT PANEL REMOVAL/INSTALLATION .)
7. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION .)
8. Scuff plate (See SCUFF PLATE REMOVAL/INSTALLATION .)
9. Tire house trim (See TIRE HOUSE TRIM REMOVAL/INSTALLATION .)
10. Seat back bar garnish (See SEAT BACK BAR GARNISH REMOVAL/INSTALLATION .)
11. Quarter trim (See QUARTER TRIM REMOVAL/INSTALLATION .)
12. Roof hook lever (See ROOF HOOK REMOVAL/INSTALLATION .)
13. Back trim (See BACK TRIM REMOVAL/INSTALLATION .)
14. CD player, CD player bracket (with CD player) (See CD PLAYER REMOVAL/INSTALLATION .)
15. Side shelf (LH) (See SIDE SHELF REMOVAL/INSTALLATION .)
16. Rear package trim (See REAR PACKAGE TRIM REMOVAL/INSTALLATION .)
17. Fuel pump unit (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] .)
Verify that the resistance between fuel pump unit terminals C and D is as indicated in the table.

Courtesy of MAZDA MOTORS CORP.

Condition of float	Resistance (ohm)
Float is at top position	18.5-21.5
Float is at bottom position	197-203

If not within the specification, replace the fuel gauge sender unit. (See FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY [SKYACTIV-G 2.0] .)