Nissan Sentra Service Manual: Air conditioning cut control

Nissan Sentra Service Manual / Engine / Engine control system / System / Air conditioning cut control

AIR CONDITIONING CUT CONTROL : System Description

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL CHART

INPUT/OUTPUT SIGNAL CHART

Sensor	Input Signal to ECM		ECM function	Actuator
Crankshaft position sensor (POS)	Engine speed* Piston position		Air conditioner cut control	IPDM E/R ↓ Air conditioner relay ↓ Compressor
Camshaft position sensor (PHASE)
Engine coolant temperature sensor	Engine coolant temperature
Accelerator pedal position sensor	Accelerator pedal position
Battery	Battery voltage*
Refrigerant pressure sensor	Refrigerant pressure
EPS control unit	CAN communication	EPS operation signal
Combination meter	CAN communication	Vehicle speed signal
A/C auto amp.	CAN communication	A/C ON signal Blower fan ON signal

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

This system improves engine operation when the air conditioner is used.

Under the following conditions, the air conditioner is turned off.

When the accelerator pedal is fully depressed.
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.

Fuel filler cap warning system

SYSTEM DIAGRAM SYSTEM DESCRIPTION The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and malfunction occurrences after refueling, by ...

Cooling fan control

SYSTEM DIAGRAM SYSTEM DESCRIPTION ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pressure, air conditioner ON signal. Then control syst ...

Other materials:

Front fog lamp
Aiming adjustment PREPARATION BEFORE ADJUSTING The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb. Before performing aiming adjustment procedure, check the following: Ensure all tires are inflated to correct pressure. Place vehicle and screen on level surface. ...

Wiring diagram
BCM Wiring diagram ...

Power supply and ground circuit
Diagnosis procedure Regarding wiring diagram information, refer to bcs-51, "wiring diagram". 1.Check fuses and fusible link Check that the following fuses and fusible link are not blown. Is the fuse blown? YES >> Replace the blown fuse or fusible link after repairing the aff ...