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Home >> Nissan-Datsun >> 2021 >> Altima SL, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Engine Control System (1 Of 3)) >> System Description >> Component Parts >> Variable Compression Ratio Actuator >> Individual Function Within The System

Individual Function Within The System

WARNING: This page is about a different car, the 2020 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.

VCR actuator is operated according to the signal from ECM. The current angle of VCR control shaft 2 is fed back to ECM.

VCR motor 

VCR motor rotates VCR control shaft according to the control signal of VCR control module.

GNSILL0182267-267Courtesy of NISSAN NORTH AMERICA, INC.

VCR motor rotation angle sensor 

VCR motor rotation angle sensor send the rotation angle signal of VCR control shaft 2 to VCR CU.

(This signal is utilized to drive VCR motor.)

VCR control shaft 2 rotation angle sensor 

When Ignition switch is ON position, VCR control shaft 2 rotation angle sensor reads the position of VCR control shaft 2.

(Reading position is utilized as the trouble diagnosis for VCR motor rotation angle sensor.)

GNSILL0182266-266Courtesy of NISSAN NORTH AMERICA, INC.