Fuel Gauge Sending Unit Test
NOTE:
For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram (see
CIRCUIT DIAGRAM
).
- Do multiplex integrated control system troubleshooting test mode A (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- If no problem is found, go to step 2.
- If DTC B1175 is indicated, go to the DTC B1175 troubleshooting (see DTC B1175: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT OPEN ).
- Check the No. 21 METER (10 A) fuse in the driver's under-dash fuse/relay box.
- Do the gauge drive circuit check (see
THE GAUGE DRIVE CIRCUIT CHECK
).
- If the fuel gauge needle sweeps from the minimum to maximum position and then returns to minimum, the gauge is OK. Go to step 4.
- If the fuel gauge needle does not sweep correctly, replace the gauge control module and retest.
- Turn the ignition switch OFF.
- Remove the rear seat cushion (see REAR SEAT REMOVAL/INSTALLATION ).
- Remove the access panel (A) from the left side of the floor.
- Disconnect the fuel pump 5P connector (B).
- Remove the fuel tank unit from the fuel tank (see FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT
).NOTE: If the fuel tank is full, drain the fuel (see FUEL TANK DRAINING ).
- Measure resistance between the No. 1 and No. 2 terminals of the fuel pump 5P 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 (see FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT ).
- If the fuel gauge sending unit test is OK, do the secondary fuel gauge sending unit test (see SECONDARY FUEL GAUGE SENDING UNIT TEST ).
FLOAT POSITION CHARTFloat Position F 1.1 in. (28.9 mm) LOW 4.7 in. (118.1 mm) E 5.7 in. (144.7 mm) Resistance (Ω) 9 to 11 217.2 to 243 284.1 to 294.1 NOTE: Remove the No. 15 BACK UP (40 A) fuse from the under-hood fuse/relay box for at least 30 seconds after completing troubleshooting, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level.