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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0461: Fuel Level Sensor Function >> DTC Confirmation Test (Using CONSULT-II)
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DTC Confirmation Test (Using CONSULT-II)

NOTE: Use the following test to check overall function of fuel level sensor circuit. During this test, 1st trip DTC may not be confirmed.
  1. Release fuel system pressure. See FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article. Remove fuel feed hose from fuel level sensor unit located under trunk liner.
  2. Connect a fuel hose to fuel level sensor unit. Turn ignition off and wait at least 10 seconds. Turn ignition on. Select FUEL LEVEL SE in DATA MONITOR mode with CONSULT-II. Check FUEL LEVEL SE output voltage and note it.
  3. Select FUEL PUMP in ACTIVE TEST mode with CONSULT-II. Press ON and drain about 7.93 Gals. (30 L) of fuel, then press OFF. Fill tank with drained fuel.
  4. Check FUEL LEVEL SE output voltage. Voltage should change more than 0.03 volt during draining and refilling. If voltage is not as specified, go to DIAGNOSTIC PROCEDURE  . If voltage is as specified, system is okay at this time.
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