Civic L4-1.8L (2006)
Fuel Gauge Sender: Testing and Inspection
Fuel Gauge Sending Unit Test
NOTE: For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram.
1. Check the No. 10 METER (7.5 A) fuse in the under-dash fuse/relay box before testing.
2. Check for body electrical system DTCs.
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If no problem is found, go to step 3.
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If DTC B1175 or B1176 is indicated, go to the indicated DTC's troubleshooting.
3. Turn the ignition switch OFF.
4. Remove the rear cushion.
5. Remove the rear floor upper cross-member (A).
6. Remove the access panel (A) from the floor.
7. Disconnect the fuel tank unit 4P connector (B).
8. Measure voltage between fuel tank unit 4P connector terminals No. 1 and No. 3 with the ignition switch ON (II). There should be battery voltage.
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If the voltage is OK, go to step 9.
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If the voltage is not as specified, check for:
