Nissan Rogue manuals

Nissan Rogue Service Manual: System description

COMPONENT PARTS

Component Part Location

Component Part Location

  1. RH side of engine compartment
  2. RH front of vehicle (view with front bumper fascia removed)

No.

Component

Description

1 IPDM E/R Refer to PCS-5, "RELAY CONTROL SYSTEM : System Description".
2 ECM The ECM sends a compressor ON request to the IPDM E/R based on the status of engine operation and load as well as refrigerant pressure information. If all the conditions are met for A/C operation, the ECM transmits the compressor ON request to the IPDM E/R.
3 A/C Compressor Vaporized refrigerant is drawn into the A/C compressor from the evaporator, where it is compressed to a high pressure, high temperature vapor. The hot, compressed vapor is then discharged to the condenser.
4 Refrigerant pressure sensor Refer to EC-28, "Refrigerant Pressure Sensor".

Component Part Location

  1. Left side of A/C unit
  2.  Right side of A/C unit

No.

Component

Description

1 Front blower relay The front blower relay controls the flow of current to fuse 17 and 27 in the Fuse Block (J/B).

The relay is grounded when the ignition switch is in the ON position.

2 BCM The BCM receives the fan ON and A/C ON signals from the front air control and sends a compressor ON request to the ECM.
3 Front air control The front air control controls the operation of the A/C and heating system based on inputs from the temperature control knob, the mode switches, the blower control dial, the intake sensor, and inputs received from the ECM across the CAN. Diagnosis of the front air control can be performed using the CONSULT. There is no self-diagnostic feature available.
4 Variable blower control The variable blower control controls the speed of the blower motor by controlling the ground circuit of the blower motor. The front air control provides voltage to the gate of the variable blower control based on the position of the blower control dial.
5 Intake door motor The intake door motor controls the position of the intake door. Fresh air is allowed to enter the cabin in one position, and recirculated inside air is allowed to enter in the other position. The intake door motor receives position commands from the front air control.
6 Intake sensor The intake sensor measures the temperature of the front evaporator fins. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
7 Air mix door motor The air mix door controls the mix of hot or cold air that enters the ventilation system. It is controlled by the front air control based on the position of the temperature dial. The air mix door motor LH receives position commands from the front air control.
8 Mode door motor The mode door controls the direction the conditioned air passes through the ventilation system.

Through a series of levers and gears, the mode door controls the defrost door, the foot door, and the vent door. There are 5 preset positions: VENT, B/L, FOOT, D/F, and DEF. The mode door motor receives position commands from the front air control.

9 Front blower motor The blower motor varies the speed at which the air flows through the ventilation system.

SYSTEM

System Description

SYSTEM DIAGRAM

System diagram

SYSTEM DESCRIPTION

Controlled by front air control:

Controlled by BCM:

Control by ECM

Control by IPDM E/R

Air Flow Control

DESCRIPTION

FAN SPEED CONTROL AT DOOR MOTOR OPERATION

When mode door motor is activated while air flow is more than the specified value, front air control temporarily reduces fan speed so that mode door moves smoothly.

Air Inlet Control

The intake door position is automatically controlled in MAX A/C and DEF modes. The intake door is controlled by customer input in the other modes.

Air Outlet Control

Air outlet control is controlled by customer input. When the A/C is turned off by turning the blower control dial fully counterclockwise, the front air control retains the current selections and returns to these selections the next time the blower control dial is turned to any fan position.

NOTE: If ambient temperature is excessively low, D/F is selected to prevent windshield fogging when air outlet is set to FOOT.

Compressor Control

DESCRIPTION

In order for the IPDM E/R to complete a compressor ON request, the following conditions must be met:

  1.  The BCM detects a Fan ON signal from the front air control. The front air control grounds the fan ON signal monitored by the BCM when the blower speed dial is in any of the fan speed positions.
  2.  The BCM detects an A/C ON signal from the front air control. The front air control grounds the A/C ON signal monitored by the BCM when:

NOTE: If the compressor was engaged by pressing the D/F or DEF mode buttons, and the time spent in either mode exceeds 1 minute, then the compressor stays requested, even when modes other than D/F or DEF are selected, until either:

  1.  The ignition switch is turned OFF.
  2.  The blower speed dial is turned completely counterclockwise to the OFF position.
  3.  The A/C switch is manually turned OFF.

In other words, the compressor ON request cannot be turned off in D/F or DEF modes

REFRIGERANT PRESSURE PROTECTION

The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sensor, located on the liquid tank on the condenser. The refrigerant pressure sensor detects the pressure inside the refrigerant line and sends a voltage signal to the ECM. If the system pressure rises above or falls below the following values, the ECM requests the IPDM E/R to de-energize the A/C relay and disengage the compressor.

PRESSURE RELIEF VALVE

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.

When the pressure of refrigerant in the system increases to an abnormal level [more than 2,990 kPa (30.5 kg/ cm2, 433.6 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere.

COMPRESSOR OIL CIRCULATION CONTROL

When the engine starts while the engine coolant temperature is 56°C (133°F) or less, ECM activates the compressor for approximately 6 seconds and circulates the compressor lubricant once.

LOW TEMPERATURE PROTECTION CONTROL

OPERATING RATE CONTROL

When the set temperature is other than fully cold or the air outlet is “VENT”, “B/L” or “FOOT”, the front air control controls the compressor activation depending on ambient temperature.

Door Control

AIR MIX DOOR MOTOR

DRIVE METHOD

Drive method

MODE DOOR MOTOR

DESCRIPTION

DRIVE METHOD

Drive method

INTAKE DOOR MOTOR

SWITCHES AND THEIR CONTROL FUNCTION

Switches and their control function

  1. Intake door
  2. Blower motor
  3. Air conditioner filter
  4. Evaporator
  5. Upper air mix door (driver side/passenger side)
  6. Lower air mix door (driver side/passenger side)
  7. Heater core
  8. Foot door
  9. Side ventilator door
  10. Sub defroster door
  11. Center ventilator and defroster door

Fresh air intake Recirculation air Discharge air Defroster Center ventilator Side ventilator Rear ventilator Front foot Rear foot

Switches and their control function

AIR DISTRIBUTION

Air distribution

Temperature Control

OPERATION

Switch Name and Function

A/C Switch Assembly

A/C Switch Assembly

  1. A/C switch
  2.  Blower control dial (with OFF switch)
  3.  DEF switch
  4.  Rear DEF switch
  5.  REC switch
  6.  Temperature control dial
  7.  MAX A/C switch
  8.  D/F switch
  9.  FOOT switch
  10.  B/L switch
  11.  VENT switch

Switch Operation

A/C switch Switches the compressor control switch indicator between ON ⇔ OFF with each press while front blower fan is activated. The circuit used by the BCM to detect an A/C ON request is grounded.

NOTE: When front blower fan is OFF, the compressor control cannot be activated.

Blower control dial (with OFF switch)
  • Blower fan speed is manually controlled with the dial for varying blower speed. When ON, the circuit used by the BCM to detect a fan ON request signal is grounded.
  •  Turns air conditioning system OFF.

NOTE: When blower control dial is turned to any ON position the air conditioning system is activated. (Compressor control state returns to the previous state before air conditioning system was turned OFF.)

DEF switch Switches DEF mode (switch indicator) between ON ⇔ OFF with each press.
  •  When DEF mode is turned ON, the air conditioning system changes to the following state.
  •  Air inlet: Fresh air intake
  •  Air outlet: DEF
  •  Blower fan: Manual setting.
  •  Compressor: ON
  •  When DEF mode is turned OFF, the air conditioning system state returns to the previous state before DEF mode was selected, but the following state is continued:
  • - Air inlet: Fresh air intake
  •  Compressor: ON

NOTE: When front blower fan is OFF, DEF cannot be activated.

MAX A/C switch Switches the MAX A/C and compressor control switch indicators between ON ⇔ OFF with each press while front blower fan is activated.
  •  When MAX A/C mode is turned ON, the air conditioning system changes to the following state.
  • Air inlet: Recirculation air intake
  •  Air outlet: Manual setting
  •  Blower fan: Manual setting.
  •  Compressor: ON
  • When MAX A/C mode is turned OFF, the air conditioning system state returns to the previous state before MAX A/C mode is selected. But, the following state is changed:
  •  Air inlet: Fresh air intake
  •  Compressor: ON

NOTE: When front blower fan is OFF, the compressor control cannot be activated.

MODE switches Selects air outlet from VENT, B/L, FOOT, and D/F.

NOTE: When the air conditioning system is OFF, the air outlet can still be selected.

REC switch
  • Air inlet is selected to fresh air intake (REC) by pressing this switch.
  •  REC indicator: ON

NOTE:

  •  When the air conditioning system is OFF, the air inlet can still be selected.
  •  When D/F mode or DEF is selected, the REC button is disabled.
Temperature control dial
  • Selects desired temperature between full cold and full hot.
  •  Clockwise rotation: Temperature increases.
  •  Counterclockwise rotation: Temperature decreases.

DIAGNOSIS SYSTEM (HVAC)

Description

Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings using diagnosis function of each control unit.

Description

CONSULT Function (HVAC)

CONSULT can display each diagnosis item using the diagnosis test modes as shown.

CONSULT application items

Diagnosis mode

Description

Self-Diagnostic Result Displays the diagnosis results judged by A/C auto amp.
Data Monitor Displays A/C auto amp. input/output data in real time.
Work support Changes the setting for each system function.
Active Test The signals used to activate each device are forcibly supplied from front air control.
ECU Identification Displays the A/C auto amp. number.

SELF-DIAGNOSTIC RESULT

Refer to HAC-134, "DTC Index".

Display Item List

DTC

Items (CONSULT screen terms)

Diagnostic item is detected when...

Possible cause

U1000 CAN COMM CIRCUIT When A/C auto amp. is not transmitting or receiving CAN communication signal for 2 or more seconds. CAN communication system
U1010 CONTROL UNIT (CAN) When detecting error during the initial diagnosis of CAN controller of front air control. Front air control
B24A4 INTAKE TEMP SEN Short or open circuit of the intake temperature sensor signal.
  • Intake sensor
  •  Front air control
  •  Harness and connector (Intake sensor circuit is open, or there is a short in the circuit)
B24BB AIRMIX ACTR Short or open circuit of air mix door motor drive signal.
  • Air mix door motor LH
  •  Front air control
  •  Harness and connector (Air mix door motor is open or shorted)
B24B7 INTAKE ACTR Short or open circuit of intake door motor drive signal.
  • Intake door motor
  •  Front air control
  •  Harness and connector (Intake door motor is open or shorted)
B27B9 MODE DOOR ACTR Short or open circuit of mode door motor drive signal.
  • Mode door motor
  • Front air control
  •  Harness and connector (Mode door motor is open or shorted)
       
       
       

DATA MONITOR

Display item list

Monitor item [Unit]

Description

AMB TEMP SEN [°C] Ambient sensor value converted from ambient sensor signal received from ambient sensor
INT TEMP SEN [°C] Intake sensor value converted from intake sensor signal received from intake sensor
AMB SEN CAL [°] Ambient sensor value calculated by A/C auto amp.
INT TEMP CAL [°C] Intake sensor value calculated by A/C auto amp.
COMP REQ SIG [On/Off] Displays A/C switch ON/OFF status transmitted to other units via CAN communication
FAN REQ SIG [On/Off] Displays blower switch ON/OFF status transmitted to other units via CAN communication
FAN DUTY [%] Duty ratio of blower motor judged by A/C auto amp.
VEHICLE SPEED [km/h (mph)] Vehicle speed signal value received from meter via CAN communication

WORK SUPPORT

Work item

Description

Reference

Door Motor Starting Position Reset Starting position reset of air mix door motor and mode door motor can be performed. HAC-151, "Work Procedure"
TARGET EVAPORATOR TEMP UPPER LIMIT SETTING Set the target evaporator upper temperature limit. HAC-150, "Target Evaporator Temp Upper Limit"

NOTE: When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of WORK SUPPORT may be cancelled.

ACTIVE TEST

Test item

Description

HVAC TEST The operation check of A/C system can be performed by selecting the mode. Refer to the following table for the conditions of each mode.

HVAC TEST

Hvac test

Hvac test

NOTE: Perform the inspection of each output device after starting the engine, because the A/C compressor has been operating.

DIAGNOSIS SYSTEM (IPDM E/R)

CONSULT Function (IPDM E/R)

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with IPDM E/R.

Direct Diagnostic Mode

Description

Ecu Identification The IPDM E/R part number is displayed.
Self Diagnostic Result The IPDM E/R self diagnostic results are displayed
Data Monitor The IPDM E/R input/output data is displayed in real time.
Active Test The IPDM E/R activates outputs to test components.
CAN Diag Support Mntr The result of transmit/receive diagnosis of CAN communication is displayed.

ECU IDENTIFICATION

The IPDM E/R part number is displayed.

SELF DIAGNOSTIC RESULT

Refer to PCS-20, "DTC Index".

DATA MONITOR

Data monitor

Data monitor

Data monitor

ACTIVE TEST

Active test

CAN DIAG SUPPORT MNTR

Refer to LAN-14, "CAN Diagnostic Support Monitor".

Preparation
Special Service Tool The actual shape of the tools may differ from those illustrated here. Tool number (TechMate No.) Tool name Description — (J-46534) Trim Tool ...

ECU diagnosis information
FRONT AIR CONTROL Reference Value TERMINAL LAYOUT PHYSICAL VALUES DTC Inspection Priority Chart If some DTCs are displayed at the same time, perform inspections one by one based ...

Other materials:

Adjustment of steering angle sensor neutral position
Description Refer to the table below to determine if adjustment of steering angle sensor neutral position is required. Work Procedure ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION CAUTION: To adjust neutral position of steering angle sensor, make sure to use CONSULT. (Adjustment ...

Parking brake front cable
Removal and Installation REMOVAL  Remove the instrument lower panel LH. Refer to IP-22, "Removal and Installation".  Remove driver seat (LH). Refer to SE-32, "DRIVER SIDE : Removal and Installation"  Remove the center console. Refer to IP-18, "R ...

Vehicle Information Display
The vehicle information display is located to the left of the speedometer. It displays such items as:  Vehicle settings  Trip computer information  Drive system warnings and settings (if so equipped)  Cruise control system information  NISSAN Intelligent K ...

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