Mazda CX-9 Grand Touring 2009 Manual page 1767

Are the front (driver and passenger
side) and rear A/C unit air mix
links, air mix cranks, and air mix
rods securely and properly
installed?
18
VERIFY THAT EXPANSION VALVE
HEAT-SENSING TUBE WITHIN A/C
UNIT IS POSITIONED SECURELY
AND CORRECTLY
19
Is the expansion valve heat-sensing
tube in the A/C unit securely
installed in the proper position?
VERIFY THAT MALFUNCTION
SYMPTOM OCCURS AFTER
REPAIR
20
Does cool air blow out? (Are
results of refrigerant system
performance test normal?)
NO.9 NO COOL AIR FROM FRONT/REAR VENTS
NO.9 NO COOL AIR FROM FRONT/REAR VENTS DESCRIPTION AND POSSIBLE CAUSE
9 No cool air from front/rear vents
DESCRIPTION
POSSIBLE CAUSE
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
No
Yes
No
Yes
No
Malfunction in A/C compressor control system
Magnetic clutch does not operate when the A/C system is turned ON.
Malfunction in PCM A/C cut control system
Malfunction in climate control unit
Malfunction in refrigerant pressure switch
Malfunction in PCM (A/C signal)
Malfunction in PCM (IG1 signal)
Malfunction in A/C compressor
A/C compressor and verify the amount.
If there is approx. 90 ml {90 cc, 3.0 fl oz} of
compressor oil, go to Step 20.
If there is more than 90 ml {90 cc, 3.0 fl oz}
of compressor oil, remove surplus oil and fill
the A/C compressor with 90 ml {90 cc, 3.0 fl
oz} of compressor oil. Repeat Steps (1) to
(5).
(Cause is excessive amount of compressor oil.)
Repair or install the links, cranks and rods securely
in the proper position, then go to Step 20.
Replace the expansion valve, then go to the next
step. (Since the valve opens too much, replacement
is necessary.)
Install the heat-sensing tube securely in the proper
position, then go to the next step.
Troubleshooting completed.
Explain repairs to customer.
Recheck malfunction symptoms, then repeat from
Step 1 if the malfunction recurs.