TL V6-3.5L (2007)
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. 21 METER (7.5 A) fuse in the under-dash fuse/relay box before testing.
2. Do the B-CAN system diagnosis Test Mode A troubleshooting.
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If no problem is found, go to step 3.
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If DTC B1175 is indicated, go to the indicated DTC's troubleshooting.
3. Turn the ignition switch OFF.
4. Remove the trunk floor.
5. Remove the access panel (A) from the floor.
6. Disconnect the fuel pump 5P connector (B).
7. Measure voltage between fuel tank unit 5P connector terminals No. 1 and No. 2 with the ignition switch ON (II). There should be battery voltage.
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If the voltage is OK, go to step 8.
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If the voltage is not as specified, check for:
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a short in the YEL/BLK wire to ground.
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an open in the YEL/BLK or BLK/WHT wire.
8. Turn the ignition switch OFF.
9. Remove the fuel tank unit from the fuel tank.