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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.5 >> Diagnostic Tests >> DTC P0461: Fuel Level Sensor Function >> DTC Confirmation Test (Overall Function Check)
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DTC Confirmation Test (Overall Function Check)

NOTE: Use the following test to check overall function of fuel level sensor. During this test, DTC may not be confirmed.
  1. To check overall function of fuel level sensor, release fuel system pressure. See FUEL PRESSURE RELEASE under FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article. Remove fuel feed hose from fuel level sensor unit located behind access cover under rear seat.
    2. CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  2. Connect a spare fuel hose to fuel level sensor unit. Turn ignition off. Prepare voltmeter leads to measure voltage between ground and fuel level sensor signal circuit at ECM terminal No. 87 (Green/Red wire) by backprobing. See Figure. Turn ignition on and note voltage reading.
  3. Using suitable equipment, drain 7.93 gals. (30.0 L) of fuel from tank and note voltage reading. Refill tank with drained fuel. Voltage should change more than 0.03 volt during draining and refilling. If voltage is as specified, no problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLESHOOTING - NO CODES article. If voltage is not as specified, go to DIAGNOSTIC PROCEDURE .
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