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Home >> Infiniti >> 2003 >> FX45 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1140: Intake Valve Timing Control Position Sensor Circuit (Bank 1) Or DTC P1145: Intake Valve Timing Control Position Sensor Circuit (Bank 2) >> Circuit Description
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Circuit Description

Intake valve timing control position sensors are located in the front cylinder heads in both bank 1 and bank 2. This sensor uses a Hall integrated circuit (element). The cam position is determined by the intake primary cam sprocket concave (in 4 places). The ECM provides feedback to the intake valve timing control for appropriate target valve open-close timing according to driving conditions based on detected cam position.