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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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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:

1. Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.0].)
2. 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].)
3. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
4. Remove the following parts:
a. Seat (LH) (See SEAT REMOVAL/INSTALLATION.)
b. Selector lever knob (AT) (See AUTOMATIC TRANSMISSION SHIFT MECHANISM REMOVAL/INSTALLATION.)
c. Shift lever knob (MT)
d. Shift panel component (See SHIFT PANEL REMOVAL/INSTALLATION.)
e. Upper panel (See UPPER PANEL REMOVAL/INSTALLATION.)
f. Parking brake lever boot panel (See PARKING BRAKE LEVER BOOT PANEL REMOVAL/INSTALLATION.)
g. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION.)
h. Scuff plate (See SCUFF PLATE REMOVAL/INSTALLATION.)
i. Tire house trim (See TIRE HOUSE TRIM REMOVAL/INSTALLATION.)
j. Seat back bar garnish (See SEAT BACK BAR GARNISH REMOVAL/INSTALLATION.)
k. Quarter trim (See QUARTER TRIM REMOVAL/INSTALLATION.)
l. Roof hook lever (See ROOF HOOK REMOVAL/INSTALLATION.)
m. Back trim (See BACK TRIM REMOVAL/INSTALLATION.)
n. CD player, CD player bracket (with CD player) (See CD PLAYER REMOVAL/INSTALLATION.)
o. Side shelf (LH) (See SIDE SHELF REMOVAL/INSTALLATION.)
p. Rear package trim (See REAR PACKAGE TRIM REMOVAL/INSTALLATION.)
q. Fuel pump unit (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
5. Verify that the resistance between fuel pump unit terminals C and D is as indicated in the table.

Condition of float

Resistance (ohm)

Float is at top position

18.5—21.5

Float is at bottom position

197—203
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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