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Nissan Armada 2025-2026 Service and Repair Manual: Compressor Does Not Operate

Nissan Armada 2025-2026 Service and Repair Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System / Compressor Does Not Operate

Description

SYMPTOM

Compressor does not operate.

Diagnosis Procedure

NOTE:

  • Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.

  • Check that refrigerant is enclosed in cooler cycle normally. If refrigerant amount is shortage from proper amount, perform the inspection of refrigerant leakage.

CHECK MAGNET CLUTCH OPERATION

Check magnet clutch. Refer to Diagnosis Procedure.

Does it operate normally?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning parts.

CHECK REFRIGERANT PRESSURE SENSOR

Check refrigerant pressure sensor. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK A/C AUTO AMP. OUTPUT SIGNAL

With CONSULT

  1. Select “Data Monitor” mode of “HVAC” using CONSULT.

  2. Select “COMP REQ SIG” and “FAN REQ SIG”, and check status under the following conditions.

Monitor item Condition Status
COMP REQ SIG A/C switch OFF Off
ON On
FAN REQ SIG Front blower motor OFF Off
ON On

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Replace A/C auto amp. Refer to Removal and Installation.

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