Fuel Gauge

Gauge Test

NOTE: Refer to page 23-135 for the fuel gauge system circuit.
1. Check the No. 15 (10 A) fuse in the under-dash fuse box before testing.
2. Remove the access panel from the floor.

3. Disconnect the 3-P connector from the fuel gauge sending unit.

4. Connect the voltmeter positive probe to the B (YEL/WHT) terminal and the negative probe to the A (BLK/WHT) terminal, then turn the ignition switch ON.
There should be between 5 and 8 V.

•   If the voltage is as specified, go to step 5.
•   If the voltage is not as specified, check for:
- An open in the YEL, YEL/WHT or BLK wire.
- Poor ground (G551, G552).
5. Turn the ignition switch OFF. Attach a jumper wire between the B (YEL/WHT) and A (BLK/WHT) terminals, then turn the ignition switch ON.
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, 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.

•   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.