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Home >> Nissan-Datsun >> 2024 >> Altima SL, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Pr25DD) (1 Of 2) >> System Description >> System >> Engine Control System >> System Description
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System Description

SYSTEM DIAGRAM 

GNSDB102780Courtesy of NISSAN NORTH AMERICA, INC.
Component parts Function
Accelerator pedal position sensor Accelerator Pedal Position Sensor 
Air fuel ratio (A/F) sensor 1 Air Fuel Ratio (A/F) Sensor 1 
ASCD steering switch Steering Switch 
ProPILOT Assist steering switch
Battery current sensor (With battery temperature sensor) Battery Current Sensor (With Battery Temperature Sensor) 
Cooling fan Cooling Fan 
Crankshaft position sensor Crankshaft Position Sensor 
ECM ECM 
EGR system System Description .
EGR volume control valve EGR Volume Control Valve 
Electric intake valve timing control actuator Electric Intake Valve Timing Control Actuator 
Electric intake valve timing control module Electric Intake Valve Timing Control Module 
Electric throttle control actuator Electric Intake Valve Timing Control Actuator 
Engine coolant temperature sensor Engine Coolant Temperature Sensor 
Engine oil pressure sensor Engine Oil Pressure Sensor 
Engine oil pressure control solenoid valve Engine Oil Pressure Control Solenoid Valve 
Engine oil pressure control system System Description 
Engine oil temperature sensor Engine Oil Temperature Sensor 
EVAP canister EVAP Canister 
EVAP canister purge volume control solenoid valve EVAP Canister Purge Volume Control Solenoid Valve 
EVAP canister vent control valve EVAP Canister Vent Control Valve .
EVAP control system pressure sensor EVAP Control System Pressure Sensor 
Exhaust camshaft position sensor Exhaust Camshaft Position Sensor .
Exhaust valve timing control solenoid valve Exhaust Valve Timing Control Solenoid Valve 
Exhaust valve timing intermediate lock control solenoid valve Exhaust Valve Timing Intermediate Lock Control Solenoid Valve 
Fuel injector Fuel Injector 
Fuel level sensor unit and fuel pump Fuel Level Sensor Unit And Fuel Pump .
Fuel pressure control System Description 
Fuel rail pressure sensor Fuel Rail Pressure Sensor 
Fuel tank temperature sensor Fuel Tank Temperature Sensor 
Heated oxygen sensor 2 Heated Oxygen Sensor 2 
High pressure fuel pump High Pressure Fuel Pump 
Ignition coil with power transistor Ignition Coil With Power Transistor 
Intake camshaft position sensor Intake Camshaft Position Sensor 
Intake manifold runner control valve Intake Manifold Runner Control Valve 
Intake manifold tuning valve Intake Manifold Tuning Valve 
Knock sensor Knock Sensor 
Malfunction indicator lamp (MIL) Malfunction Indicator Lamp (MIL) 
Manifold absolute pressure sensor Manifold Absolute Pressure Sensor 
Mass air flow sensor (With intake air temperature sensor) Mass Air Flow Sensor (With Intake Air Temperature Sensor) 
Power generation voltage variable control system System Description 
Refrigerant pressure sensor Refrigerant Pressure Sensor 
Stop lamp switch Stop Lamp Switch And Brake Pedal Position Switch 
Brake pedal position switch

SYSTEM DESCRIPTION 

ECM controls the engine by various functions.

Function Reference
Dig (direct injection gasoline) system System Description 
Electric ignition system System Description 
Intake valve timing control System Description 
Exhaust valve timing control System Description 
Intake manifold runner control System Description 
Intake manifold tuning system System Description 
Engine protection control System Description 
Fuel filler cap warning system System Description 
Air conditioning cut control System Description 
Cooling fan control System Description 
Evaporative emission system System Description 
Automatic speed control device (ASCD) System Description 
CAN communication System Description 
Active grille shutter system Refer to System Description .