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2008 - MX-5 - Body and Accessories

NO. 1 FUEL GAUGE NEEDLE POSITION INCORRECT [INSTRUMENT CLUSTER]



1

Fuel gauge needle position incorrect

POSSIBLE CAUSE

  • Fuel gauge sender unit malfunction

  • Instrument cluster malfunction

  • Connector or pin malfunction

  • Fuel gauge sender unit is improperly installed

  • Open or short circuit in wiring harness between instrument cluster and GND

  • Open or short circuit in wiring harness between instrument cluster and fuel gauge sender unit


Diagnostic procedure

STEP

INSPECTION

ACTION

1

  • Turn the ignition switch to the ON position.

  • Verify that the fuel gauge needle does not move after ignition switch is turned off, or the display does not indicate F even though fuel tank is full.

  • Is the fuel gauge normal?

Yes

Troubleshooting completed.

No

Go to the next step.

2

  • Start the instrument cluster input/output check mode.

  • Select the check code 22.

  • Display value is 7—206?

Yes

Go to the next step.

No

Go to Step 4.

3

  • Perform the check code 23 inspection.

  • Is there any malfunction?

Yes

Replace the instrument cluster.

No

Go to the next step.

4

  • Perform the check code 22 inspection.

  • Is there any malfunction?

Yes

Go to the next step.

No

Go to Step 6.

5

  • Turn the ignition switch off.

  • Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).

  • Are the terminals normal?

Yes

Replace the instrument cluster.

No

Repair or replace the terminal.

6

  • Turn the ignition switch to LOCK position.

  • Remove the instrument cluster.

  • Disconnect the instrument cluster connector.

  • Inspect for continuity between the following wiring harnesses.

    • 2R terminal—GND

    • 2T terminal—GND

  • Is there continuity?

Yes

Repair or replace the wiring harness between the instrument cluster and GND.

No

Go to the next step.

7

  • Turn the ignition switch off.

  • Inspect the fuel gauge sender unit connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).

  • Are the terminals normal?

Yes

Go to the next step.

No

Repair or replace the terminal.

8

  • Turn the ignition switch to LOCK position.

  • Inspect for continuity following the wiring harness between instrument cluster and fuel gauge sender unit.

    • 2R terminal—C terminal

    • 2T terminal—A terminal

  • Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness between the instrument cluster and the fuel gauge sender unit.

9

  • Turn the ignition switch off.

  • Is the fuel gauge sender unit installed properly?

Yes

Inspect the fuel gauge sender unit.

No

Reinstall the fuel gauge sender unit.




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