## Fuel Supply System

#### Fuel Gauge Sending Unit Test

11-441

Special Tools Required Adjustable ring wrench 07WAA-0010100 NOTE: For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram (see page 22-88).

1. Check the No. 10 METER (75A) fuse in the under-dash fuse/relay box before testing.
2. Turn the ignition switch OFF.
3. Remove the rear seat cushion (see page 20-237).
4. Remove the access panel from the floor.
5. Disconnect the fuel pump 5P connector.
6. Measure voltage between the fuel pump 5P connector terminals No. 1 and No. 2 with the ignition switch ON (II). There should be between 5 and 8 V.

- If the voltage is as specified, go to step 7.
- If the voltage is not as specified, check for:

- an open in the YEL/BLK or BLK wire.
- poor ground (G551).

FUEL PUMP 5P CONNECTOR

Wire side of female terminals

7. Turn the ignition switch OFF.

8. Install a 2 ohm; resistor between the fuel pump 5P connector terminals No. 1 and No. 2, then turn the ignition switch ON (II).

FUEL PUMP 5P CONNECTOR

Wire side of female terminals

9. Check that the pointer of the fuel gauge indicates ''F''.

- If the pointer of the fuel gauge does not indicate ''F'', replace the gauge.
- If the gauge is OK, inspect the fuel gauge sending unit.

NOTE: The pointer of the fuel gauge returns to the bottom on the gauge dial when the ignition switch is OFF regardless of the fuel level.