Fuel Gauge: Testing and Inspection
FUEL GAUGE / TEST1. Check the No. 25 (7.5 A) fuse in the under-dash fuse/relay box before testing.
2. Remove the rear seat.
3. Remove the protective cover and access panel from the floor.
4. With the ignition switch OFF, disconnect the 3-P connector from the fuel gauge sending unit.
5. Connect the voltmeter positive probe to the YEL/WHT terminal and the negative probe to the BLK/WHT terminal, then turn the ignition switch ON (II). There should be between 5 and 8 V.
If the voltage is as specified, go to step 6.
If the voltage is not as specified, check for
- an open in the YEL/WHT, BLU/WHT or BLK/WHT wire.
- poor ground (G501-G502).
6. Turn the ignition switch OFF. Attach a jumper wire between the BLK/WHT and YEL/WHT terminals, then turn the ignition switch ON (II).
Check that the pointer of the fuel gauge starts moving toward the "F" mark.
CAUTION: Turn the ignition switch OFF before the pointer reaches "F" on the gauge dial. Failure to do so may damage the fuel gauge.
NOTE: The fuel gauge is a bobbin (cross-coil) type gauge, hence the fuel level is continuously indicated even when the ignition switch is OFF, and the pointer moves more slowly than that of a bimetal type gauge.
- If the pointer of the fuel gauge does not move at all, replace the gauge.
- If the gauge is OK, inspect the fuel gauge sending unit.