Detailed Flow

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.

INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.

: GO TO 2.
SYMPTOM CHECK
Check the symptom from the customer's information. Check that any symptom occurs other than the interviewed symptom.

Insufficient cooling/heating: GO TO 3.

Refrigerant leakage: GO TO 6.

Noise: GO TO 7.
CONTROL SYSTEM DIAGNOSIS
Perform the system diagnosis for the A/C control system. Refer to "DIAGNOSIS AND REPAIR WORK FLOW ".

Is A/C control system normal?

YES: GO TO 4.

NO: GO TO 8.
PERFORMANCE TEST
Perform the performance test. Check the operation of each part. Refer to "INSPECTION ".

: GO TO 5.
TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
Diagnose using a manifold gauge whenever system's high and/or low side pressure(s) is/are unusual. Specify the malfunctioning part. Refer to "SYMPTOM TABLE ".

Low refrigerant charge: GO TO 6.

Except above: GO TO 8.
CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Specify the malfunctioning part. Refer to "LEAK TEST ".

: GO TO 8.
TROUBLE DIAGNOSIS FOR NOISE
Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to "SYMPTOM TABLE ".

: GO TO 8.
MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.

: GO TO 9.
REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.

Does it operate normally?

YES: INSPECTION END

NO: GO TO 2.