Fuel Gauge Sending Unit Test

NOTE: Unless otherwise indicated, illustrations used in the procedure are for USA and Canada models

1. HDS - Connect
1.
Turn the vehicle to the ON mode, but do not start the engine.
2.
Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
3.
Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting.

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

5. Fuel Gauge Sending Unit - Test
1.
Measure the resistance between fuel tank unit 4P connector terminals No. 2 and No. 4 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.
USA and Canada models
Float Position
F
4.953 in
(125.8 mm)
1/2
2.634 in (66.9 mm)
LOW
0.961 in
(24.4 mm)
E
0.465 in
(11.8 mm)
Resistance
(?)
19 to
21
195.7 to 205.7
518.7 to 650.3
772 to
788
Mexico models
Float Position
F
3.827 in
(97.2 mm)
1/2
2.000 in (50.8 mm)
LOW
0.764 in
(19.4 mm)
E
0.496 in
(12.6 mm)
Resistance
(?)
19 to
21
197.6 to 207.6
551.7 to 713.7
772 to
788
2.
Reconnect the fuel tank unit connector.
3.
Move the float to F, then turn the vehicle to the ON mode.
4.
Check that the fuel gauge indicators F with the float at F.
If the fuel gauge does not indicate F, replace the gauge control module.
If the gauge is OK, the test is complete.
5.
Turn the vehicle to the OFF (LOCK) mode and remove the No. B29 fuse and the No. C34 fuse 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.