System Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

Component parts	Function
Crankshaft position sensor	Crankshaft Position Sensor
Engine coolant temperature sensor	Engine Coolant Temperature Sensor
Mass Air Flow Sensor (With Intake Air Temperature Sensor 1)	Mass Air Flow Sensor (With Intake Air Temperature Sensor 1)
ECM	ECM
Combination meter	ECM receives the vehicle speed signal via CAN communication.