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Fuel Gauge Sending Unit Test: Test

NOTE: Unless otherwise indicated, illustrations used in the procedure are for USA and Canada models
  1. Fuse - Check
      1. Check the No. B29 (10 A) +B BACK UP fuse in the under-hood fuse/relay box and the No. C34 (7.5 A) IG1 METER fuse in the under-dash fuse/relay box before testing.
  2. Body Electrical DTCs - Check
      1. Check for body electrical system DTCs.
    • If no problem is found, go to the next procedure (Center Console - Remove).
    • If DTC B1175 or B1176 is indicated, go to the indicated DTC's troubleshooting.
  3. Center Console - Remove
  4. Access Panel - Remove
    GHH81832Courtesy of HONDA, U.S.A., INC.
    		 1. Disconnect the connector (A).
    GHH81833Courtesy of HONDA, U.S.A., INC.
    		 2. Remove the access panel (A) from the floor

    3. Disconnect the connector (B).
  5. Open or Short Wire at Fuel Gauge Sending Unit Connector - Check
    GHH81834Courtesy of HONDA, U.S.A., INC.
    		 1. Measure the voltage between fuel tank unit connector terminals No. 2 and No. 4 with the vehicle in ON mode. There should be 12 volt battery voltage.
    • If the voltage is OK, go to step 2.
    • If the voltage is not as specified, check for:
      • a short in the GRY wire to ground.
      • an open in the BRN wire.

    2. Turn the vehicle to the OFF (LOCK) mode.
  6. FUEL TANK UNIT REMOVAL AND INSTALLATION
  7. Fuel Gauge Sending Unit - Test
    GHH81835Courtesy of HONDA, U.S.A., INC.
    		 1. Measure the resistance between fuel tank unit 4P connector terminals No. 2 and No. 4 with the float at E (EMPTY), LOW (LOW FUEL INDICATOR), 1/2 (HALF FULL), and F (FULL) positions. If you do not get the following readings, replace the fuel tank unit. Refer to: FUEL TANK UNIT REMOVAL AND INSTALLATION .

    USA and Canada models 
    Float Position F4.953 in(125.8 mm) 1/22.634 in (66.9 mm) LOW0.961 in(24.4 mm) E0.465 in(11.8 mm)
    Resistance(Ω) 19 to21 195.7 to 205.7 518.7 to 650.3 772 to788

    Mexico models 

    Float Position F3.827 in(97.2 mm) 1/22.000 in (50.8 mm) LOW0.764 in(19.4 mm) E0.496 in(12.6 mm)
    Resistance(Ω) 19 to21 197.6 to 207.6 551.7 to 713.7 772 to788

    2. Reconnect the fuel tank unit connector

    3. Remove the No. B29 (10 A) +B BACK UP fuse in the under-hood fuse/relay box and the No. C34 (7.5 A) IG1 METER fuse in the under-dash fuse/relay box for at least 10 seconds, then reinstall it

    4. Turn the vehicle to the ON mode

    5. Check that the pointer of the fuel gauge indicates F with the float at F.

    NOTE:
    • The pointer of the fuel gauge returns to the bottom of the gauge dial when turned the vehicle in the ACCESSORY or OFF (LOCK) mode, regardless of the fuel level.
    • Remove the No. B29 (10 A) +B BACK UP fuse in the under-hood fuse/relay box or the No. C34 (7.5 A) IG1 METER fuse in the under-dash fuse/relay box for at least 10 seconds after completing the test, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level.
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