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Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2 Of 3) >> Basic Inspection >> Service After Replacing Or Removing Engine Parts >> Special Repair Requirement
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Special Repair Requirement

X: Applicable

Part name

Service performed

Required service

Reference

Replacement

Removal

ECM

X

--

Additional service when replacing ECM

Work Procedure 

Electric intake valve timing control module

X

--

Electric intake valve timing control actuator position learning

Work Procedure 

Electric intake valve timing control actuator

X

--

Electric intake valve timing control actuator position learning

Crankshaft position sensor

X

--

Electric intake valve timing control actuator position learning

Intake camshaft position sensor

X

--

Electric intake valve timing control actuator position learning

Exhaust camshaft position sensor

X

--

Electric intake valve timing control actuator position learning

Engine mechanical parts

  • Timing chain
  • Intake/Exhaust camshaft
  • Intake/Exhaust camshaft sprocket
  • Piston
  • Connecting rod
  • Crankshaft

X

X

Electric intake valve timing control actuator position learning

Engine mechanical parts

  • Timing chain
  • Intake/Exhaust camshaft
  • Intake/Exhaust camshaft sprocket

X

--

Valve timing offset data clear

Work Procedure 

Accelerator pedal

X

--

Accelerator pedal released position learning

Work Procedure 

Electric throttle control actuator

X

X *

Throttle valve closed position learning

Work Procedure 

--

Idle air volume learning

Work Procedure 

Air fuel ratio initial learning

Work Procedure 

Mass air flow sensor

X

--

Air fuel ratio initial learning

Work Procedure 

Fuel injector

Air fuel ratio sensor 1

Engine assembly

X

--

Idle air volume learning

Work Procedure 

Air fuel ratio initial learning

Work Procedure 

Electric intake valve timing control actuator position learning

Work Procedure 

Valve timing offset data clear

Work Procedure 

Valve timing offset data writing

Work Procedure 

Turbocharger assembly

X

--

Turbocharger wastegate control solenoid valve data initialization

Work Procedure 

VCR control module

X

--

VCR base position learning

Work Procedure 

VCR actuator

X

--

Engine oil

X

--

Engine oil data reset

Work Procedure 

*: Cleaning in electric throttle control actuator