Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS U1000 To P0153 >> 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.
      RESISTANCE SPECIFICATIONS

      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 [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant (commercial service tool).

    INSPECTION END

scientia non olet · About Mike's Workshop Manuals