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Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - G37 Coupe - DTC U0113, U1000, U1001, U1003, U1010, U1011 & U1024; DTC P0011 Through P0223 >> P0031, P0032, P0051, P0052 A/F Sensor 1 Heater >> Component Inspection

Component Inspection

  1. CHECK AIR FUEL RATIO (A/F) SENSOR 1
    1. Turn ignition switch OFF.
    2. Disconnect A/F sensor 1 harness connector.
    3. Check resistance between A/F sensor 1 terminals as follows.
      TERMINALS RESISTANCE REFERENCE

      Terminal Resistance
      3 and 4 1.8 - 2.44 Ω [at 25°C (77°F)]
      3 and 1, 2 ∞Ω
      (Continuity should not exist)
      4 and 1, 2

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: GO TO 2.

  2. REPLACE AIR FUEL RATIO (A/F) SENSOR 1

    Replace malfunctioning air fuel ratio (A/F) sensor 1.

    CAUTION:
    • Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
    • Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

    INSPECTION END

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