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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (2 OF 9))DTC/CIRCUIT DIAGNOSISDTC P0132, P0152: A/F SENSOR 1DTC LOGICDTC CONFIRMATION PROCEDURE
2019 Infiniti Q70 3.7 Luxe, AWD

DTC Confirmation Procedure

2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Confirmation Procedure
WARNING: This page is about a different variant/trim than selected.
  1. PRECONDITIONING 
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 10.5 V or more at idle.

    GO TO 2 .

  2. CHECK A/F SENSOR FUNCTION 

    SYMBOL WITH CONSULT

    1. Start engine and warm it up to normal operating temperature.
    2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT.
    3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication.

    SYMBOL WITH GST

    Follow the procedure "With CONSULT" above.

    Is the indication constantly approx. 5 V?

    YES

    Proceed to Diagnosis Procedure .

    NO

    GO TO 3 .

  3. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL WITH CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.
    4. Restart engine.
    5. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.
      CAUTION: Always drive vehicle at a safe speed.
    6. Maintain the following conditions for approximately 20 consecutive seconds.

      ENG SPEED

      1, 000 - 3, 200 RPM

      VHCL SPEED SE

      More than 40 km/h (25 mph)

      B/FUEL SCHDL

      1.5 - 9.0 msec

      Selector lever

      Suitable position
      NOTE:
      • Keep the accelerator pedal as steady as possible during cruising.
      • If this procedure is not completed within 1 minute after restarting engine at step 1, return to step 1.
    7. Check 1st trip DTC.

    SYMBOL WITH GST

    Follow the procedure "With CONSULT" above.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    INSPECTION END

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.