Diagnosis Procedure

2019 Infiniti Q70 3.7 Luxe, AWDSECTION Diagnosis Procedure
WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC WITH TCM 

    Check DTC with TCM. Refer to CONSULT Function .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Perform trouble shooting relevant to DTC indicated.

  2. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) 

    Check DTC with ABS actuator and electric unit (control unit). Refer to CONSULT Function .

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Perform trouble shooting relevant to DTC indicated.

  3. CHECK DTC WITH COMBINATION METER 

    Check DTC with combination meter. Refer to CONSULT Function .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Perform trouble shooting relevant to DTC indicated.

  4. CHECK OUTPUT SPEED SENSOR 

    Check output speed sensor. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace or replace error-detected parts.

  5. CHECK WHEEL SENSOR 

    Check wheel sensor. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Replace or replace error-detected parts.

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.