Fuel Gauge Sender: Testing and Inspection

Fuel Gauge Sending Unit Test

NOTE: For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram.

1. Check the No. 12 METER (7.5 A) fuse in the driver's under-dash fuse/relay box, and replace it if needed.

2. Check for body electrical system DTCs.

- If no DTCs are found, go to step 3.
- If DTC B1175 or B1176 is indicated, go to the indicated DTC's troubleshooting.

3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

4. Remove the rear seat cushion.

5. Remove the access panel (A) from the floor.





6. Disconnect the fuel tank unit 4P connector (B).

7. Measure the voltage between fuel tank unit 4P connector terminals No. 1 and No. 3 with the ignition switch in ON (II)/engine start/stop button to select the ON mode. There should be battery voltage.

- If the voltage is OK, go to step 8.
- If the voltage is not as specified, check for:
- a short in the PUR wire to ground.
- an open in the PUR or BRN wire.





8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

9. Remove the fuel tank unit from the fuel tank Fuel Tank Unit Removal/Installation.

10. Measure the resistance between fuel tank unit 4P connector terminals No. 1 and No. 3 with the float at E (EMPTY), LOW (LOW FUEL INDICATOR), 1/2 (HALF FULL), and F (FULL) positions.

If you do not get the following readings, replace the fuel gauge sending unit Fuel Pump/Fuel Gauge Sending Unit Replacement.









11. Reconnect the fuel tank unit 4P connector.

12. Remove the No.15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds, then reinstall it.

13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

14. Check that fuel gauge pointer indicates F with the float at F.

- If the fuel gauge pointer does not indicate F, replace the gauge control module Service and Repair.
- If the fuel gauge pointer indicates F, the test is complete.

NOTE:

- The pointer of the fuel gauge returns to the bottom of the gauge dial when the ignition switch is in ACC (I) and LOCK (0), or vehicle in ACC or OFF mode, regardless of the fuel level.
- Remove the No. 15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds after completing the test, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level.