Nissan Rogue (T33) 2021-Present Service Manual: Diagnosis System (hvac)

Nissan Rogue (T33) 2021-Present Service Manual / Ventilation, Heater & Air Conditioner :: Heater & Air Conditioning Control System / Automatic Air Conditioning :: System Description / Diagnosis System (hvac)

CONSULT Function

CONSULT performs the following functions via CAN communication with A/C amp.:

Diagnosis mode Function
Self diagnosis result Display non-network DTC which A/C amp. memorizes
ECU identification The A/C amp. part number is displayed
Active Test The signals used to activate each device are forcibly supplied from A/C amp.
Work support Changes the setting for each system function
Data monitor The A/C amp. input/output signals are displayed
Replace ECU Writes the Nissan Ariya vehicle specification when replacing the A/C amp.
ECU reprogramming Allows reprogramming when replacing the A/C amp.

NOTE:

Diagnosis should be performed with engine running. Door motor operation speeds become slower and NO results may be returned even for normal operation if battery voltage drops below 12 V during self diagnosis.

Self diagnosis result

Diagnosis result that is judged by A/C amp. can be checked. Refer to DTC Index.

ECU Identification

Part number of A/C amp. can be checked.

ACTIVE TEST

The signals used to activate each device forcibly supplied from A/C amp. operation check of air conditioning system can be performed.

NOTE:

Engine must be running for active test functions to work properly.

Test item Operation Description
Heater and ventilation seat front left OFF OFF
Heater HI Operates the front seat heater LH.
Vent HI

NOTE:

This item displayed, but cannot be tested.
Heater and ventilation seat front right OFF OFF
Heater HI

NOTE:

This item displayed, but cannot be tested.
Vent HI Operates the front seat RH blower.
Heater and ventilation seat rear left OFF OFF
Heater HI Operates the rear seat heater LH.
Vent HI

NOTE:

This item displayed, but cannot be tested.
Heater and ventilation seat rear right OFF OFF
Heater HI Operates the rear seat heater RH.
Vent HI

NOTE:

This item displayed, but cannot be tested.
Heated steering wheel request OFF OFF
Heated steering wheel request Operates the heated steering wheel relay.
HVAC TEST OFF OFF
MODE 1 - MODE 7 The operation check of air conditioning system can be performed by selecting the mode. Refer to the following table for the conditions of each mode.

Check each output device

— Test item
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door motor position VENT VENT B/L B/L D/F1 D/F2 DEF
Intake door motor position REC REC 20% FRE 20% FRE FRE FRE FRE
Magnetic clutch (A/C compressor request signal) ON ON ON ON OFF OFF ON
Air mix door motor LH position FULL COLD FULL HOT FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
Air mix door motor RH position FULL COLD FULL HOT FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
Front blower motor control signal (duty ratio) 35% 35% 60% 60% 90% 90% 35%
ECV duty ratio 80% 80% 40% 40% 0% 0% 90%

NOTE:

Perform the inspection of each output device after starting the engine because the A/C compressor is operated.

WORK SUPPORT

Setting change of each setting functions can be performed.

Work support items Description Display Setting
Fresh memory setting

Set whether to memorize the fresh air intake (FRE) condition when ignition/power switch is turned OFF with fresh air intake (FRE).

NOTE:

This item displayed, but cannot be used.
Blower setting In FOOT mode, the air blowing to DEF can change ON/OFF. O/A C/M*

  • Auto control: Defroster door position (open)

  • Manual control: Defroster door position (close)
O/A O/M

  • Auto control: Defroster door position (open)

  • Manual control: Defroster door position (open)
C/A O/M

  • Auto control: Defroster door position (close)

  • Manual control: Defroster door position (open)
C/A C/M

  • Auto control: Defroster door position (close)

  • Manual control: Defroster door position (close)
Recirculation memory setting Set whether to memorize the recirculation (REC) condition when ignition/power switch is turned OFF with recirculation (REC).
Temperature setting correct If the temperature felt by the customer is different from the air flow temperature controlled by the temperature setting, the A/C amp. control temperature can be adjusted to compensate for the temperature setting.

0.0°C/0°F*

3°C (5°F)

5°C (9°F)

7°C (13°F)

A/C amp. control temperature against set temperature can be set (-3.0)°C/(-6)°F – (+3.0)°C/(+6)°F at a rate of 0.5°C/1°F per adjustment.

NOTE:

When −6°F (−3.0°C) is corrected on the temperature setting set as 77°F (25.0°C) the temperature controlled by A/C amp. is 77°F (25.0°C)−6°F (−3.0°C) = 71°F (22.0°C) and the temperature becomes lower than the temperature setting.
Target evaporator temperature upper limit setting Setting of upper limit value of target evaporator temperature can be changed. Control characteristic of A/C compressor control (freezing protection control and refrigerant discharge amount control) changes according to change of the setting, and then operation ratio of A/C compressor and refrigerant discharge amount are changed. According to change of the setting, control characteristic focusing on the fuel consumption can be adjusted to control characteristic focusing on the cooling capacity. DEFAULT* Target evaporator temperature upper limit value: 50°F (10°C)
3°C ( 37°F) Target evaporator temperature upper limit value: 37°F (3°C)
5°C ( 41°F) Target evaporator temperature upper limit value: 41°F (5°C)
7°C (45°F ) Target evaporator temperature upper limit value: 45°F (7°C)
Stop/start system operation condition setting Set the air inlet change control during the stop/start system operation Permission/Prohibition

  • Permission: Permit the air inlet change control

  • Prohibition: Prohibit the air inlet change control
Air inlet change setting Set the air inlet change control during the stop/start system operation Permission/Prohibition

  • Permission: Permit the air inlet change control

  • Prohibition: Prohibit the air inlet change control
Air flow reduction setting Set the air inlet change control during the stop/start system operation Permission/Prohibition

  • Permission: Permit the air inlet change control

  • Prohibition: Prohibit the air inlet change control

*: Default setting

NOTE:

When the battery cable is disconnected from the negative terminal or when the battery voltage is 10 V or less, the setting for the work support item is set to the value stored 1 minute after most recent ignition switch OFF status.

DATA MONITOR

Input/output signal of A/C amp. can be checked.

NOTE:

The following table includes information (items) inapplicable to this Nissan Ariya vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Display item list
Monitor item [Unit] Description
FAN REQ SIG [On/Off] Displays blower fan ON signal ON/OFF status transmitted to ECM.
A/C compressor clutch status [On/Off] A/C compressor status judged from the A/C compressor feedback signal received from IPDM E/R via CAN communication.
Compressor request signal [On/Off] Displays A/C ON signal ON/OFF status transmitted to ECM.
Blower fan request signal [On/Off] Displays fan signal ON/OFF status transmitted to BCM.
ODO/TRIP METER km (mile] Odometer signal value received from ABS actuator and electric unit (control unit) via CAN communication.
Rear XM

NOTE:

This item displayed, but cannot be used.
XM °C (°F) Target discharge air temperature (LH side) judged by A/C amp. depending on the temperature setting and the value from each sensor.
PASS IN CAL °C (°F) In-Nissan Ariya vehicle temperature (RH side) value calculated by A/C amp.
Compressor ECV duty [%] Duty ratio of electrical control valve.
Nissan Ariya Vehicle speed km/h (mph) Vehicle speed signal value received from ABS actuator and electric unit (control unit) via CAN communication.
AMB TEMP SEN °C (°F) Ambient temperature signal value received from combination meter via CAN communication.
Intake temperature sensor value °C (°F) Evaporator fin temperature value converted from intake sensor signal received from intake sensor.
In-Nissan Ariya vehicle temperature sensor °C (°F) In-Nissan Ariya vehicle temperature (driver side) value calculated by A/C amp.
Blower fan duty [%] Duty ratio of front blower motor judged by A/C amp.
Assist seat target air temperature °C (°F) Target discharge air temperature (RH side) judged by A/C amp. depending on the temperature setting and the value from each sensor.
Engine RPM [rpm] Engine speed signal value received from ECM via CAN communication.
Engine coolant temperature °C (°F) Engine coolant temperature signal value received from ECM via CAN communication.
Sun load sensor calculation value [W/m^2] Sunload value calculated by A/C amp.
Intake temperature sensor calculation value °C (°F) Evaporator fin temperature value calculated by A/C amp.
In-Nissan Ariya vehicle temperature sensor value °C (°F) In-vehicle temperature value converted from in-Nissan Ariya vehicle sensor signal received from in-vehicle sensor.
Ambient temperature sensor calculation value °C (°F) Ambient temperature value calculated by A/C amp.
Sun load sensor value [W/m^2] Sunload value converted from sunload sensor signal received from sunload sensor.

Replace ECU

Writes the vehicle specification when replacing the A/C amp.

ECU reprogramming

Allows reprogramming when replacing the A/C amp.

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