Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHONDA2001ODYSSEY LXREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL SUPPLY SYSTEMFUEL GAUGE TEST

2001 Honda Odyssey LX

Fuel Gauge Test

2001 Honda Odyssey LXSECTION Fuel Gauge Test

NOTE: For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram. (see appropriate WIRING DIAGRAMS article ).

Check the No. 9 BACK UP LIGHT INSTRUMENT LIGHT (7.5A) fuse in the driver's under-dash fuse/relay box before testing.
Turn the ignition switch OFF.
Remove the rear seats and carpet.
Remove the access panel from the floor. See Fuel Line/Quick-Connect Fitting .
Disconnect the fuel pump 5P connector.
Measure voltage between fuel pump 5P connector terminals No. 1 and No. 2 with the ignition switch ON (II). There should be between 5 and 8 V (about 5V on '03-04 models).
- If the voltage is as specified, go to step 9.
- If the voltage is not as specified, go to step 7.
Fig 1: Measuring Voltage Between Fuel Pump 5P Connector Terminals No. 1 & No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF. Check for continuity between fuel pump 5P connector terminal No. 1 and body ground. There should be continuity.
- If there is continuity, go to step 8.
- If there no continuity, check for an open in the BLK wire or a poor ground (G551).
Fig 2: Checking For Continuity Between Fuel Pump & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure voltage between gauge assembly 16P connector terminal No. 11 and body ground with the ignition switch ON (II). There should be between 5 and 8 V.
- If the voltage is as specified, check for an open in the YEL/BLU wire.
- If the voltage is not as specified, replace the gauge assembly.
Fig 3: Measuring Voltage Between Gauge Assembly 16P Connector Terminal No. 11 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Install a 2 ohms resistor between fuel pump 5P connector terminals No. 1 and No. 2, then turn the ignition switch ON (II).

Fig 4: Installing Resistor Between Fuel Pump 5P Connector Terminals No. 1 & No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check that the pointer of the fuel gauge starts moving toward the "F" mark.
- 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. See Fuel Gauge Sending Unit Test/Replacement .
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.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.