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System Description

SYSTEM DIAGRAM

GNSDB131969

Courtesy of NISSAN NORTH AMERICA, INC.

Component parts	Function
Crankshaft position sensor	Crankshaft Position Sensor .
Intake camshaft position sensor	Intake Camshaft Position Sensor .
Engine coolant temperature sensor 1	Engine Coolant Temperature Sensor .
Accelerator pedal position sensor	Accelerator Pedal Position Sensor .
Battery	ECM receives the battery voltage signal.
Refrigerant pressure sensor	Refrigerant Pressure Sensor .
Power steering control module	ECM receives the EPS operation signal via CAN communication.
Combination meter	ECM receives the vehicle speed signal via CAN communication.
A/C auto amp.	ECM receives the following signals via CAN communication. A/C ON signal Blower fan ON signal
ECM	ECM .
IPDM E/R	ECM transmits the A/C relay control signal via CAN communication.

SYSTEM DESCRIPTION

This system improves engine operation when the air conditioner is used. Under the following conditions, the air compressor is turned off.

When the accelerator pedal is fully depressed (selector lever is in R position).
When cranking the engine.
At high engine speeds.
When the engine coolant temperature becomes excessively high.
When operating power steering during low engine speed or low vehicle speed.
When engine speed is excessively low.
When refrigerant pressure is excessively low or high.