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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (1 Of 3) >> System Description >> System >> Electric Ignition System >> System Description >> System Diagram
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System Diagram

GNSILL0182590-590Courtesy of NISSAN NORTH AMERICA, INC.

Component parts

Function

Crankshaft position sensor

Crankshaft Position Sensor 

Exhaust camshaft position sensor

Exhaust Camshaft Position Sensor 

Mass air flow sensor

(With intake air temperature sensor)

Mass Air Flow Sensor (With Intake Air Temperature Sensor 1) 

Engine coolant temperature sensor 1

Engine Coolant Temperature Sensor 

Electric throttle control actuator

Electric Throttle Control Actuator 

Accelerator pedal position sensor

Accelerator Pedal Position Sensor 

Transmission range switch

ECM receives the park/neutral position signal.

Battery

ECM receives the battery voltage signal.

Knock sensor 1 and 2

Knock Sensor 

Combination meter

ECM receives the vehicle speed signal via CAN communication.

ECM

ECM 

Ignition Coil With Power Transistor

Ignition Coil With Power Transistor