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Home >> Infiniti >> 2023 >> QX50 Autograph >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (1 Of 2) >> 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