Fuel Gauge Sending Unit Test

Flammable - Keep Fire Away

NOTE: Refer to the Fuel and Emissions Systems Service Precautions before disconnecting the fuel line.

2. DTC - Check
1.
Check for DTCs with the HDS. If any of the following DTCs are indicated, troubleshoot the indicated DTCs.
NOTE: If the PGM-FI system's DTC and the body electrical system's DTC are indicated at the same time, troubleshoot the PGM-FI system's DTC first.
PGM-FI system: P0462, P0463
Body electrical system: B1175, B1176

5. Fuel Gauge Sending Unit - Test
1.
Measure the resistance between the following terminals 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.
Test circuit
Connector
Terminal
FUEL GAUGE+
Fuel tank unit 4P connector
(male terminals):
No. 2
FUEL GAUGE-
No. 4
Float Position
F
158.6 mm
(6.244 in)
1/2
90.7 mm
(3.571 in)
LOW
37.0 mm
(1.457 in)
E
17.0 mm
(0.669 in)
Resistance
(?)
19 to
21
205.3 to 215.3
520.9 to 630.5
772 to
788
2.
Reconnect the fuel tank unit 4P connector.
3.
Remove the No. A18 (10 A) fuse in the under-hood fuse/relay box and the No. B7 (10 A) fuse in the under-dash fuse/relay box for at least 10 seconds, then reinstall them.
4.
Turn the vehicle to the ON mode.
5.
Check that the pointer of the fuel gauge indicates F with the float at F.
If the pointer of the fuel gauge does not indicate F, replace the gauge control module.
If the gauge is OK, the test is complete.
NOTE:
The pointer of the fuel gauge returns to the bottom of the gauge dial when the vehicle condition is in the ACCESSORY or OFF (LOCK) mode, regardless of the fuel level.
Remove the No. A18 (10 A) fuse in the under-hood fuse/relay box or the No. B7 (10 A) fuse in the under-dash 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.