Mazda 2002 6 Workshop Manual page 1229

STEP
13 INSPECT A/C COMPRESSOR OIL
• Is compressor oil darker than normal and
contaminated with aluminum chips?
14 CHECK TO SEE WHETHER MALFUNCTION
IS IN A/C COMPRESSOR OR ELSEWHERE
• Is noise heard immediately after A/C
compressor is stopped?
15 INSPECT DRIVE BELT
• Inspect drive belt.
(See B–3 DRIVE BELT
• Is it okay?
16 INSPECT DRIVE BELT CONDITION
• Is drive belt worn?
• Does it have foreign material imbedded in it,
or have oil on it?
17 INSPECT MAGNETIC CLUTCH
• Inspect magnetic clutch.
(See U–38 MAGNETIC CLUTCH
INSPECTION)
• Is it okay?
18 CHECK TO SEE WHETHER MALFUNCTION
IS IN A/C COMPRESSOR OR REFRIGERANT
LINES
• Is noise emitted from A/C compressor?
19 VERIFY THAT MALFUNCTION SYMPTOM
OCCURS AFTER REPAIR
• Has A/C compressor noise stopped?
* : If there is gas leakage, air enters into the A/C system. The desiccant within the receiver/drier absorbs the
moisture from the air and becomes saturated. If the A/C system is used in this condition, the inside of the A/C
compressor will begin to rust due to this moisture, which may cause lock up or noise to occur. Therefore,
replacement of the receiver/drier is necessary.
End Of Sie
U–78
TROUBLESHOOTING
INSPECTION
INSPECTION)
Yes Replace A/C compressor and condenser, then go to Step
19. (Since A/C compressor may be worn and receiver/drier
may be clogged, replacement of receiver/drier is
necessary.)
No Condition is normal. Recheck malfunction symptoms.
Yes Replace A/C compressor, then go to Step 19. (A/C
compressor discharge valve left open)
No Go to next step.
Yes Go to next step.
No Adjust or replace drive belt, then go to Step 19.
Yes Remove obstruction, remove oil, or replace drive belt, then
go to Step 19.
No Go to next step.
Yes Replace A/C compressor (excluding pressure plate, A/C
compressor pulley, and stator), then go to Step 19.
No Replace magnetic clutch, then go to Step 19.
Yes Visually inspect A/C compressor, replace appropriate parts
if necessary, then go to next step.
No If noise is due to refrigerant lines, repair detached or
missing clips, tighten loose bolts, then go to next step.
Yes Troubleshooting completed.
Explain repairs to customer.
No Recheck malfunction symptoms, then repeat from Step 1 if
malfunction recurs.
ACTION