Fuel Gauge Sending Unit Test - Honda Civic 2002-2003 Service Manual

Fuel Supply System
Fuel Gauge Sending Unit Test
Special Tools Required
Fuel sender wrench 07XAA-00101 OA
NOTE: For the fuel gauge system circuit diagram, refer
to the Gauges Circuit Diagram (see page 22-S81.
1. Check the No. 10 METER (7.SAI fuse in the under-
dash fuse/relay box before testing.
2. Do the gauge drive circuit check (see page 22-S61.
• If the fuel gauge needle sweeps from minimuni
to maximum position and then returns to the
minimum position, the gauge is OK. Go to step 3 .
• If the fuel gauge needle does not sweep from
minimum to maximum position position and
then return to the minimum position, replace the
gauge assembly and retest.
3. Turn the ignition switch OFF.
4. Remove the rear seat cushion (see page 20-801.
S. Remove the access panel (AI from the floor.
B
6. Disconnect the fuel pump SP connector (BI.
11-156
7. Measure voltage between fuel pump SP connector
terminals No.1 and No.2 with the ignition switch
ON (III. There should be battery voltage.
If the voltage is as specified, go to step 8.
If the voltage is not as specified, check for:
- an open in the YEUBLK or BLK wire.
- poor ground (GS511.
FUEL PUMP 5P CONNECTOR
(BLKI
Wire side of female terminals
8. Turn the ignition switch OFF. Remove the No.9
BACK UP (7.5AI fuse from the under-hood fuse/
relay box for at least 10 seconds, then reinstall it.
9. Install a 2
Q
resistor between fuel pump 5P
connector terminals No.1 and No.2, then turn the
ignition switch ON (III.
FUEL PUMP 5P CONNECTOR
Wire side of female terminals
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