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Home >> Infiniti >> 2024 >> Q50 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 7) >> Engine (ECM) >> P052D Intake Valve Timing Control >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

TYPE A 

  1. CHECK ELECTRIC IVT CONTROL ACTUATOR MOTOR CONTROL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect electric IVT control actuator (bank 2) harness connector and electric IVT control module harness connector.
    3. Check the continuity between electric IVT control actuator (bank 2) harness connector and electric IVT control module harness connector.
      Electric IVT control actuator (bank 2) Electric IVT control module Continuity
      Connector Terminal Connector Terminal
      F145 1 E153 4 Existed
      2 6
      3 2
    4. Check harness for short to power and short to ground.

    Is the inspection result normal?

    YES>>

    Replace electric IVT control actuator (bank 2). Refer to TIMING CHAIN : Exploded View .

    NO>>

    Repair or replace error-detected parts.

TYPE B 

  1. CHECK TIMING CHAIN INSTALLATION 

    Check service records for any recent repairs that may cause timing chain misaligned.

    Are there any service records that may cause timing chain misaligned?

    YES>>

    Check timing chain installation. Refer to TIMING CHAIN : Exploded View .

    NO>>

    GO TO 2.

  2. CHECK CAMSHAFT SPROCKET AND TIMING CHAIN 

    Check the following.

    1. Visually check for chipping camshaft sprocket gear tooth.
    2. Timing chain tension and elongation.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Repair or replace error-detected parts.