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Home >> Infiniti >> 2003 >> G35 4D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0461: Fuel Level Sensor Circuit Range/Performance >> DTC Confirmation Test (Using Generic Scan Tool)
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DTC Confirmation Test (Using Generic Scan Tool)

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 PRESSURE RELEASE under FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article.
  2. Remove rear seat cushion. Remove fuel feed hose from fuel level sensor unit. See Figure . Connect a fuel hose where fuel feed hose was removed.
  3. Place other end of hose into a suitable fuel container. Turn ignition off and wait at least 10 seconds.
    4. CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  4. Measure voltage between engine ground and ECM terminal No. 69 by backprobing. Turn ignition on and monitor voltmeter.
  5. Drain 7.93 Gals. (30.0 L) of fuel from tank. Refill tank with drained fuel. Voltage should change more than .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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