System Diagram

Fig 1: Engine Control System Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

ECM	Can communication	VVEL control module
EVAP canister purge volume control solenoid valve	EVAP service port	EVAP canister vent control valve
EVAP control system pressure sensor	EVAP canister	Battery current sensor (with Battery temperature sensor)
Battery	Fuel tank temperature sensor	Fuel level sensor
Fuel tank	Fuel pressure regulator	Fuel pump
Three way catalyst 2	Heated oxygen sensor 2	Three way catalyst 1
Engine oil temperature sensor	A/F sensor 1	Spark plug
PCV valve	Ignition coil (with power transistor)	VVEL actuator motor
VVEL control shaft position sensor	Intake valve timing control solenoid valve	Camshaft position sensor (PHASE)
Fuel damper	Engine coolant temperature sensor	Knock sensor
Crankshaft position sensor (POS)	Muffler	Cooling fan control module
Cooling fan	Air cleaner	Mass air flow sensor (with intake air temperature sensor)
Electric throttle control actuator	Throttle position sensor	Manifold absolute pressure (MAP) sensor^*1
MIL	Ignition switch	Accelerator pedal position sensor
Power steering pressure sensor^*2	Refrigerant pressure sensor	PNP signal
Fuel pump control module^*3

*1: Manifold absolute pressure (MAP) sensor is not used.

*2: With power steering system models

*3: With fuel pump control module (FPCM) models. Refer to HOW TO CHECK VEHICLE TYPE .