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Nissan Armada 2025-2026 Service and Repair Manual: Front Automatic Air Conditioning System

Nissan Armada 2025-2026 Service and Repair Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System / Operation Inspection / Front Automatic Air Conditioning System

Work Procedure

DESCRIPTION

The purpose of the operation inspection is to check that the individual system operates normally.

Check condition : Engine running at normal operating temperature.

OPERATION INSPECTION (DISPLAY UNIT)

CHECK MEMORY FUNCTION

  1. Touch AUTO switch to activate air conditioning.

  2. Set temperature to "HI" by operating temperature control switch (driver side).

  3. Touch ON·OFF switch.

  4. Ignition switch OFF.

  5. Ignition switch ON.

  6. Touch AUTO switch.

  7. Check that the set temperature "HI" is maintained.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 10.

CHECK FAN SPEED

  1. Start engine.

  2. Operate fan switch and check that fan speed changes.

  3. Check operation for all fan speeds.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 10.

CHECK AIR OUTLET

  1. Operate fan switch to set the fan speed to maximum speed.

  2. Operate MODE switch and DEF switch.

  3. Check that air outlets change according to each indicated air outlet by placing a hand in front of the outlets.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 10.

CHECK AIR INLET

  1. Touch intake switch to set the air inlet to recirculation.

  2. Listen to intake sound and confirm air inlets change.

  3. Touch intake switch again to set the air inlet to fresh air intake.

  4. Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 10.

CHECK COMPRESSOR

  1. Touch A/C switch. (compressor is ON)

  2. Check visually and by sound that the compressor operates.

  3. Touch A/C switch again. (compressor is OFF)

  4. Check that compressor stops.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 10.

CHECK DISCHARGE AIR TEMPERATURE

  1. Operate temperature control switch (driver side).

  2. Check that discharge air temperature (driver side) changes.

  3. Operate temperature control switch (passenger side).

  4. Check that discharge air temperature (passenger side) changes.

  5. Touch SYNC switch.

  6. Check that air temperature setting (driver side/passenger side) is unified to the driver side temperature setting.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 10.

CHECK WITH TEMPERATURE SETTING LOWERED

  1. Operate compressor.

  2. Operate temperature control switch (driver side) to lower the set temperature to "LO".

  3. Check that cool air blows from the air outlets.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

GO TO 10.

CHECK TEMPERATURE INCREASE

  1. Warm up engine to the normal operating temperature.

  2. Operate temperature control switch (driver side) to raise the set temperature to "HI".

  3. Check that warm air blows from the air outlets.

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

GO TO 10.

CHECK AUTO MODE

  1. Touch AUTO switch.

  2. Operate temperature control switch (driver side) to check that fan speed or air outlet changes (the air outlet or fan speed varies depending on the ambient temperature, in-vehicle temperature, set temperature, and etc.).

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 10.

CHECK SELF-DIAGNOSIS WITH CONSULT

  1. Perform self-diagnosis with CONSULT.

  2. Check that any DTC is detected.

Is any DTC detected?

YES>>

Refer to DTC Index, and perform the appropriate diagnosis.

NO>>

GO TO 11.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to Fail-safe.

>>

Refer to Symptom Table, and perform the appropriate diagnosis.

OPERATION INSPECTION (MULTIFUNCTION SWITCH)

CHECK MEMORY FUNCTION

  1. Press AUTO switch to activate air conditioning.

  2. Set temperature to "HI" by operating temperature control switch (driver side).

  3. Press ON·OFF switch.

  4. Ignition switch OFF.

  5. Ignition switch ON.

  6. Press AUTO switch.

  7. Check that the set temperature "HI" is maintained.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 10.

CHECK FAN SPEED

  1. Start engine.

  2. Operate fan switch and check that fan speed changes.

  3. Check operation for all fan speeds.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 10.

CHECK AIR OUTLET

  1. Operate fan switch to set the fan speed to maximum speed.

  2. Operate MODE switch and DEF switch.

  3. Check that air outlets change according to each indicated air outlet by placing a hand in front of the outlets.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 10.

CHECK AIR INLET

  1. Press intake switch to set the air inlet to recirculation.

  2. Listen to intake sound and confirm air inlets change.

  3. Press intake switch again to set the air inlet to fresh air intake.

  4. Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 10.

CHECK COMPRESSOR

  1. Touch A/C switch. (compressor is ON)

  2. Check visually and by sound that the compressor operates.

  3. Touch A/C switch again. (compressor is OFF)

  4. Check that compressor stops.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 10.

CHECK DISCHARGE AIR TEMPERATURE

  1. Operate temperature control switch (driver side).

  2. Check that discharge air temperature (driver side) changes.

  3. Operate temperature control switch (passenger side).

  4. Check that discharge air temperature (passenger side) changes.

  5. Touch SYNC switch.

  6. Check that air temperature setting (driver side/passenger side) is unified to the driver side temperature setting.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 10.

CHECK WITH TEMPERATURE SETTING LOWERED

  1. Operate compressor.

  2. Operate temperature control switch (driver side) to lower the set temperature to "LO".

  3. Check that cool air blows from the air outlets.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

GO TO 10.

CHECK TEMPERATURE INCREASE

  1. Warm up engine to the normal operating temperature.

  2. Operate temperature control switch (driver side) to raise the set temperature to "HI".

  3. Check that warm air blows from the air outlets.

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

GO TO 10.

CHECK AUTO MODE

  1. Press AUTO switch.

  2. Operate temperature control switch (driver side) to check that fan speed or air outlet changes (the air outlet or fan speed varies depending on the ambient temperature, in-vehicle temperature, set temperature, and etc.).

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 10.

CHECK SELF-DIAGNOSIS WITH CONSULT

  1. Perform self-diagnosis with CONSULT.

  2. Check that any DTC is detected.

Is any DTC detected?

YES>>

Refer to DTC Index, and perform the appropriate diagnosis.

NO>>

GO TO 11.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to Fail-safe.

>>

Refer to Symptom Table, and perform the appropriate diagnosis.

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