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Home >> Infiniti >> 2010 >> M35 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0130 To P0430 >> DTC P0132, P0152: A/F Sensor 1 >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connections M16, M70. Refer to "GROUND INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connections.

  2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
    1. Disconnect A/F sensor 1 harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between A/F sensor 1 harness connector and ground.
      CONNECTOR TERMINAL VOLTAGE CHART

      DTC A/F sensor 1 Ground Voltage
      Bank Connector Terminal
      P0132 1 F40 4 Ground Battery voltage
      P0152 2 F41 4
      Fig 1: Checking Voltage Between A/F Sensor 1 Terminal 4 And Ground
      G04874929Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E12, F3
    • IPDM E/R harness connector E7
    • 15 A fuse (No. 85)
    • Harness for open or short between A/F sensor 1 and fuse

      Repair or replace harness or connectors.

  4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
      CONNECTOR TERMINAL CONTINUITY CHART

      DTC A/F sensor 1 ECM Continuity
      Bank Connector Terminal Connector Terminal
      P0132 1 F40 1 F106 57 Existed
      2 61
      P0152 2 F41 1 65
      2 66
    4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.
      CONNECTOR TERMINAL CONTINUITY CHART

      DTC A/F sensor 1 Ground Continuity
      Bank Connector Terminal
      P0132 1 F40 1 Ground Not existed
      2
      P0152 2 F41 1
      2
      CONNECTOR TERMINAL CONTINUITY CHART

      DTC ECM Ground Continuity
      Connector Terminal
      P0132 F106 57 Ground Not existed
      61
      P0152 65
      66
    5. Also check harness for short to power.

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

  5. CHECK INTERMITTENT INCIDENT

    Perform "DESCRIPTION ".

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Repair or replace malfunctioning part.

  6. REPLACE A/F SENSOR 1

    Replace malfunctioning A/F sensor 1.

    CAUTION:
    • Discard any 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 A/F sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant (commercial service tool).

    INSPECTION END

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