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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (Electric Power Steering) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC C1607, C1608: Power Steering Control Module >> Diagnosis Procedure
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Diagnosis Procedure

  1. PERFORM SELF-DIAGNOSIS 

    SYMBOL CONSULT

    1. Ignition switch ON.
    2. Erase "Self Diagnostic Result" mode of "EPS/DAST 3".
    3. Press ignition switch OFF and wait for at least 10 seconds.
    4. Start the engine.
      CAUTION: Never drive the vehicle.
    5. Select "Self Diagnostic Result" mode of "EPS/DAST 3".

    Is DTC "C1607" or "C1608" detected?

    YES

    EPS control unit is malfunctioning. Replace steering gear assembly. Refer to Removal and Installation .

    NO

    Check pin terminal and connection of each harness connector for malfunctioning conditions.

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