Nissan Rogue manuals

Nissan Rogue Service Manual: System description

Component Part Location

Component Part Location

  1. RH side of engine compartment
  2.  RH front of vehicle (view with front bumper fascia removed)
  3.  LH 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".
5 Ambient sensor The ambient sensor measures the temperature of the air surrounding the vehicle. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

Component Part Location

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

No.

Component

Description

1 Sunload sensor Sunload sensor measures sunload amount. This sensor is a dual system so that sunload for driver side and passenger side are measured separately. This sensor converts sunload amount to voltage signal by photodiode and transmits to A/C auto amp.
2 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.

3 BCM The BCM receives the fan ON and A/C ON signals from the A/C auto amp. and sends a compressor ON request to the ECM.
4 In-vehicle sensor In-vehicle sensor measures temperature of intake air that flows through aspirator to passenger room. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
5 A/C switch assembly The A/C switch assembly 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 ambient temperature sensor, the intake sensor, and inputs received from the ECM across the CAN.

Diagnosis of the A/C switch assembly can be performed using the CONSULT. There is no selfdiagnostic feature available.

6 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.
7 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 A/C auto amp.
8 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.
9 Air mix door motor (driver side) The air mix door controls the mix of hot or cold air that enters the ventilation system. It is controlled by the A/C auto amp. based on the position of the temperature dial. The air mix door motor LH receives position commands from the A/C auto amp.
10 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 A/C auto amp.

11 A/C auto amp. A/C auto amp. controls front automatic air conditioning system by inputting and calculating signals from each sensor and each switch.
12 Air mix door motor (passenger side) The air mix door controls the mix of hot or cold air that enters the ventilation system. It is controlled by the A/C auto amp. based on the position of the temperature dial. The air mix door motor LH receives position commands from the A/C auto amp.
13 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

Control by A/C auto amp.

Ambient sensor (setting temperature correction)

In-vehicle sensor [in-vehicle temperature correction]

Intake sensor (intake temperature correction)

Sunload sensor (sunload amount correction)

Set temperature correction

Control by ECM

Control by IPDM E/R

Control by BCM

Air Flow Control

DESCRIPTION

AUTOMATIC AIR FLOW CONTROL

Automatic air flow control

STARTING AIR FLOW CONTROL

Starting air flow control

LOW COOLANT TEMPERATURE STARTING CONTROL

If the engine coolant temperature is 56°C (133°F) or less, to prevent a cold discharged air flow, A/C auto amp. suspends blower motor activation for a maximum of 150 seconds depending on target air mix door opening angle. After this, blower motor control signal is increased gradually, and blower motor is activated.

Low coolant temperature starting control

HIGH IN-VEHICLE TEMPERATURE STARTING CONTROL

When front evaporator fin temperature is high [intake sensor value is 35°C (95°F) or more], to prevent a hot discharged air flow, A/C auto amp. suspends blower motor activation for approximately 3 seconds so that front evaporator is cooled by refrigerant.

FAN SPEED CONTROL AT DOOR MOTOR OPERATION

When mode door motor is activated while air flow is more than the specified value, A/C auto amp. reduces fan speed temporarily so that mode door moves smoothly.

Air Inlet Control

The intake door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation of the compressor.

Intake door automatic control selects FRE, 20% FRE, or REC depending on a target air mix door opening angle, based on in-vehicle temperature, ambient temperature, and sunload.

Air Inlet Control

Air Outlet Control

Air Outlet Control

Compressor Control

DESCRIPTION

COMPRESSOR PROTECTION CONTROL AT PRESSURE MALFUNCTION

When high-pressure side value that is detected by refrigerant pressure sensor is as per the following state, ECM requests IPDM E/R to turn A/C relay OFF and stops the compressor.

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

Low temperature protection control

AIR CONDITIONING CUT CONTROL

When set engine is running is excessively high load condition, ECM requests IPDM E/R to turn A/C relay OFF, and stops the compressor. Refer to EC-45, "AIR CONDITIONING CUT CONTROL : System Description".

Door Control

AIR MIX DOOR MOTOR (DRIVER SIDE)

DESCRIPTION

DRIVE METHOD

Air mix door motor (driver side)

AIR MIX DOOR MOTOR (PASSENGER SIDE)

DESCRIPTION

DRIVE METHOD

Air mix door motor (passenger side

MODE DOOR MOTOR

DESCRIPTION

DRIVE METHOD

Mode door motor

INTAKE DOOR MOTOR

DESCRIPTION

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

*: Inlet status is displayed by indicator during activating automatic control

AIR DISTRIBUTION

Air distribution

Temperature Control

Temperature Control

Fail-safe

FAIL-SAFE FUNCTION

If a communication error exists between the A/C auto amp., and the AV control unit and preset switch for 30 seconds or longer, air conditioning is controlled under the following conditions:

A/C switch : ON
Air outlet : AUTO
Air inlet : FRE (Fresh air intake)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs

OPERATION

Switch Name and Function

CONTROL OPERATION

A/C Switch Assembly

A/C Switch Assembly

  1. Defroster switch
  2.  Temperature control switch (driver side)
  3.  Recirculation switch
  4.  Fan control switch
  5. AUTO switch
  6. Fresh air switch
  7.  Temperature control switch (passenger side)
  8.  DUAL switch
  9. A/C switch
  10. Display
  11. Mode switch
  12.  ON/OFF switch

Switch Operation

Switch name

Function

Temperature control dial (Driver side) Setting temperature is selected using this dial within a range between 18°C (60°F) and 32°C (90°F) at a rate of 0.5°C (1.0°F) per adjustment.

NOTE: When air conditioning system is OFF, setting temperature can be selected only while air conditioning system status screen [only when MODE switch (driver side) is pressed] is indicated on display.

ON·OFF switch Air conditioning turns ON ⇔ OFF each time this switch is pressed.
  •  When this switch is pressed while air conditioning is ON
  •  Air conditioning turns OFF and becomes the following status, when this switch is pressed.
  •  Air outlet: FOOT
  •  Air flow: OFF
  •  Air inlet: Settings set before this switch is pressed
  •  A/C switch: OFF
  •  When this switch is pressed while air conditioning is OFF
  •  Air conditioning turns ON and operates according to the settings set before air conditioning is turned OFF, when this switch is pressed.
AUTO switch
  • AUTO switch indicator turns ON and air conditioning becomes the following status, when this switch is pressed while air conditioning is ON.
  •  Air outlet: Automatic control
  •  Air flow: Automatic control
  •  Air inlet: Settings set before this switch is pressed
  •  A/C switch: ON
  •  Air conditioning turns ON and operates according to the following status, when this switch is pressed while air conditioning is OFF. (AUTO switch indicator turns ON)
  •  Air outlet: Automatic control
  •  Air flow: Automatic control
  •  Air inlet: Settings set before this switch is pressed
  •  A/C switch: ON

NOTE: When air outlet or air flow is manually operated while AUTO switch indicator is ON, AUTO switch indicator turns OFF. However, automatic control continues for other functions than air outlet or air flow.

Fan switch
  • Air flow can be set within a range between 1st – 7th speed according to switch operation.
  • Press +: Air flow increases
  •  Press −: Air flow decreases
  • Air conditioning turns ON and operates according to the following status, when this switch is pressed while air conditioning is OFF.
  •  Air outlet: Automatic control
  •  Air flow: 1st speed
  •  Air inlet: Settings set before this switch is pressed
  •  A/C switch: Settings set before air conditioning is turned OFF

NOTE: Automatic air flow control is cancelled (AUTO switch indicator turns OFF), when fan switch is pressed while AUTO switch indicator is ON.

A/C switch Compressor control (switch indicator) changes between ON ⇔ OFF each time this switch is pressed while blower motor is operated.

NOTE: A/C switch cannot be turned ON when blower motor is OFF.

DUAL switch Left and right ventilation temperature separately control (switch indicator) changes between ON ⇔ OFF each time this switch is pressed while blower motor is operated.

NOTE:

  •  Setting temperature for passenger side is the same as that for driver side when left and right ventilation temperature separately control is OFF.
  •  DUAL switch operation is not accepted when DEF mode is ON.
Temperature control dial (Passenger side)
  • Outlet air flow temperature of passenger side can be changed without changing outlet air flow temperature of driver side.
  •  Setting temperature is selected using this dial within a range between 18°C (60°F) and 32°C (90°F) at a rate of 0.5°C (1.0°F) per adjustment.

NOTE:

  •  When air conditioning system is OFF, setting temperature can be selected only while air conditioning system status screen [only when MODE switch (passenger side) is pressed] is indicated on display.
  •  When DEF mode is ON, temperature control dial (passenger side) is inoperative.
REC switch Switch indicator turns ON and air inlet is set to recirculation (REC), when this switch is pressed.

NOTE: Air inlet can be changed when air conditioning is in OFF status.

FRE switch Switch indicator turns ON and air inlet is set to fresh air intake (FRE), when this switch is pressed.

NOTE: Air inlet can be changed when air conditioning is in OFF status

MODE switch Air outlet changes from VENT⇒ B/L ⇒ FOOT ⇒ D/F ⇒ VENT each time this switch is pressed.

NOTE:

  •  Air outlet can be changed when air conditioning is in OFF status.
  •  Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE switch is pressed while AUTO switch indicator is ON.
DEF switch DEF mode (switch indicator) changes between ON ⇔ OFF each time switch is pressed.
  •  When this switch is pressed while air conditioning is ON
  •  Air conditioning becomes the following status when DEF mode is turned ON.
  •  Air outlet: DEF
  •  Air flow: Settings set before DEF mode is turned ON
  •  Air inlet: Fresh air intake
  •  A/C switch: ON
  •  Air conditioning becomes the following status when DEF mode is turned OFF.
  •  Air outlet: Settings set before DEF mode is turned ON
  •  Air flow: Settings set before DEF mode is turned OFF
  •  Air inlet: Settings set before DEF mode is turned OFF
  •  A/C switch: Settings set before DEF mode is turned OFF
  •  When this switch is pressed while air conditioning is OFF
  •  Air conditioning turns ON and operates in the following status, when DEF mode is turned ON.
  •  Air outlet: DEF
  •  Air flow: Automatic control
  •  Air inlet: Fresh air intake
  •  A/C switch: ON
  •  Air conditioning becomes the following status when DEF mode is turned OFF.
  •  Air outlet: Automatic control
  •  Air flow: Settings set before DEF mode is turned OFF
  •  Air inlet: Settings set before DEF mode is turned OFF
  •  A/C switch: Settings set before DEF mode is turned OFF

NOTE: When DEF mode is turned ON while AUTO switch indicator is turned ON, AUTO switch indicator turns OFF. However, automatic air flow control continues.

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

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 A/C auto amp.
ECU Identification Displays the A/C auto amp. number.

SELF-DIAGNOSTIC RESULT

Refer to HAC-32, "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 A/C auto amp. A/C auto amp.
B24A0 A/C AUTO AMP. A/C auto amp. EEPROM system is malfunctioning. A/C auto amp.
B24A1 A/C AUTO AMP. POWER SUPPLY Detected power supply voltage is out of range.
  • A/C auto amp.
  •  Harness and connector (Power supply circuit is open, or there is a short in the circuit)
B24A6 IN-CAR SENSOR Detected temperature at in-vehicle sensor is out of range.
  • In-vehicle sensor
  •  A/C auto amp.
  •  Harness and connector (In-vehicle sensor circuit is open, or there is a short in the circuit)
B24A4 EVAP TEMP SEN Detected temperature at intake sensor is out of range.
  • Intake sensor
  •  A/C auto amp.
  •  Harness and connector (Intake sensor circuit is open, or there is a short in the circuit)
B24A9* SUNLOAD SEN Detected calorie at sunload sensor 1395 w/m2 (1200 kcal/m2·h).
  • Sunload sensor
  •  A/C auto amp.
  •  Harness and connector (Sunload sensor circuit is open, or there is a short in the circuit)
B24BB DR AIRMIX ACTR Short or open circuit of air mix door motor drive signal.
  • Air mix door motor LH
  •  A/C auto amp.
  •  Harness and connector (Air mix door motor is open or shorted)
B24BD AS AIRMIX ACTR Short or open circuit of air mix door motor drive signal.
  • Air mix door motor RH
  •  A/C auto amp.
  •  Harness and connector (Air mix door motor is open or shorted)
B24B4 A/C CONTROL Short or open circuit of A/C switch communication.
  • A/C switch
  •  A/C auto amp.
  •  Harness and connector (A/C switch is open or shorted)
B24B6
B24B7 INTAKE ACTR Short or open circuit of intake door motor drive signal.
  • Intake door motor
  •  A/C auto amp.
  •  Harness and connector (Intake door motor is open or shorted)
B24B9 MODE DOOR ACTR Short or open circuit of mode door motor drive signal.
  • Mode door motor
  •  A/C auto amp.
  •  Harness and connector (Mode door motor is open or shorted)
B24C3 BLOWER MOTOR FEEDBACK Short or open circuit.
  • Front blower motor
  • Front blower motor relay
  •  Variable blower control
  •  A/C auto amp.
  •  Harness and connecto
B24C6 BLOWER MOTOR CONTRO
B24D4 A/C CONTROL COMMUNICA Short or open circuit.
  • A/C switch
  •  A/C auto amp.
  •  Harness and connector (A/C switch is open or shorted)

*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diagnosis reports an error even though the sunload sensor is functioning normally.

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
IN-VEH TEMP [°] In-vehicle sensor value converted from in-vehicle sensor signal received from in-vehicle sensor
INT TEMP SEN [°C] Intake sensor value converted from intake sensor signal received from intake sens
SUNLOAD SEN [w/m2] Sunload sensor value converted from sunload sensor signal received from sunload sensor
AMB SEN CAL [°] Ambient sensor value calculated by A/C auto amp.
IN-VEH CAL [°C] In-vehicle 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
ENG COOL TEMP [°C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED [km/h (mph)] Vehicle speed signal value received from meter via CAN communication

WORK SUPPORT

Work item

Description

Reference

TEMP SET CORRECT

(Setting of difference between temperature setting and control temperature)

If the temperature felt by the customer is different than the airflow temperature controlled by the temperature setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting. HAC-50, "Temperature Setting Trimmer"
REC MEMORY SET

(REC memory function setting)

  • If the ignition switch is turned to the OFF position while the REC switch is set to ON (recirculation), “With” or “Without” of the REC switch ON (recirculation) condition can be selected.
  •  If “With” was set, the REC switch will be ON (recirculation) when turning the ignition switch to the ON position again.
  •  If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again.
HAC-51, "Inlet Port Memory Function (REC)"
FRE MEMORY SET

(FRE memory function setting)

  • If the ignition switch is turned to the OFF position while the FRE switch is set to ON (fresh air intake), “With” or “Without” of the FRE switch ON (fresh air intake) condition can be selected.
  •  If “With” was set, the FRE switch will be ON (fresh air intake) when turning the ignition switch to the ON position again.
  •  If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again.
HAC-50, "Inlet Port Memory Function (FRE)"
BLOW SET Setting change of foot position setting trimmer can be performed. HAC-50, "Foot Position Setting Trimmer"
Door Motor Starting Position Reset Starting position reset of air mix door motor and mode door motor can be performed. HAC-52, "Work Procedure"
TARGET EVAPORATOR TEMP UPPER LIMIT SETTING Set the target evaporator upper temperature limit. HAC-51, "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.

Application item

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".

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ECU diagnosis information
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