Fuel Tank Unit: Testing and Inspection

Fuel Gauge Sending Unit Test

4WD

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

1. Check the No. B5 METER (7.5 A) fuse in the 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).

4. Remove the rear seat cushion Rear Seat Removal / Installation.

5. Remove the access panel (A) from the left side of the floor.





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

7. Remove the fuel tank unit from the fuel tank.

8. Measure the resistance between the No. 2 and No. 4 terminals of the fuel tank unit 4P connector with the float at E (EMPTY), LOW (LOW FUEL INDICATOR), 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.
- If the fuel gauge sending unit readings are OK, do the secondary fuel gauge sending unit test Testing and Inspection.





NOTE: Remove the No. A15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 30 seconds after completing the test, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level.