1.CHECK CHARGED REFRIGERANT Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with the gauge. Is there refrigerant? YES>>GO TO 2. NO>>Check for refrigerant leakages detecting fluorescent leak detector. Refer to Inspection.
2.CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. Refer to Diagnosis Description.
Does it operate normally?
YES>>GO TO 6.
NO>>GO TO 3.
3.CHECK MAGNET CLUTCH

1. Turn the ignition switch OFF.
2. Disconnect the magnet clutch connector.
3. Directly apply the battery voltage to the magnet clutch. Check for operation visually and by sound.

Does it operate normally?
YES>>GO TO 4.
NO>>Replace the compressor.
4.CHECK MAGNET CLUTCH CIRCUIT CONTINUITY

1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between magnet clutch harness connector and IPDM E/R harness connector.

   IPDM E/R | Magnet clutch | Continuity
   Connector | Terminal | Connector | Terminal
   E7 | 48 | F35 | 1 | Existed

Is the inspection result normal?
YES>>GO TO 5.
NO>>Repair the harnesses and connectors.
5.CHECK FUSE
Check 10A fuse (No. 49, located in the IPDM E/R).
NOTE：
Refer to Fuse, Connector and Terminal Arrangement.
Is the inspection result normal?
YES>>Replace IPDM E/R.
NO>>Replace the fuse after repairing the applicable circuit.
6.CHECK SELF-DIAGNOSIS RESULT CHECK
With CONSULT-III

1. Perform the “SELF-DIAGNOSIS”.
2. Check if any DTC is detected in the self-diagnostic results.

NOTE：
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to DTC Logic or DTC Logic.
Is any DTC displayed?
YES>>Perform the diagnosis that is applicable to the sensor and door motor. Refer to DTC Index.
NO>>GO TO 7.
7.CHECK A/C AUTO AMP. OUTPUT SIGNAL
With CONSULT-III

1. Perform the “DATA MONITOR” of HVAC. Refer to Reference Value.
2. Check A/C switch signal and blower fan motor switch signal.

Monitor item | Condition | Status
COMP REQ SIG | A/C switch: OFF | Off
A/C switch: ON | On
FAN REQ SIG | Fan control dial: OFF | Off
Fan control dial: ON | On

Is the inspection result normal?
YES>>GO TO 8.
NO>>Replace A/C auto amp.
8.CHECK REFRIGERANT PRESSURE SENSOR
Check the refrigerant pressure sensor. Refer to Diagnosis Procedure (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>INSPECTION END
NO>>Repair or replace the malfunctioning parts.