NO.9 NO COOL AIR FROM FRONT/REAR VENTS
NO.9 NO COOL AIR FROM FRONT/REAR VENTS DESCRIPTION AND POSSIBLE CAUSE
18
z
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?
A/C compressor and verify the amount.
z
If there is
approx. 90 ml {90 cc, 3.0 fl oz}
of
compressor oil, go to Step 20.
z
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.)
No
Repair or install the links, cranks and rods securely
in the proper position, then go to Step 20.
19
VERIFY THAT EXPANSION VALVE
HEAT-SENSING TUBE WITHIN A/C
UNIT IS POSITIONED SECURELY
AND CORRECTLY
z
Is the expansion valve heat-sensing
tube in the A/C unit securely
installed in the proper position?
Yes
Replace the expansion valve, then go to the next
step. (Since the valve opens too much, replacement
is necessary.)
No
Install the heat-sensing tube securely in the proper
position, then go to the next step.
20
VERIFY THAT MALFUNCTION
SYMPTOM OCCURS AFTER
REPAIR
z
Does cool air blow out? (Are
results of refrigerant system
performance test normal?)
Yes
Troubleshooting completed.
Explain repairs to customer.
No Recheck malfunction symptoms, then repeat from
Step 1 if the malfunction recurs.
9
No cool air from front/rear vents
DESCRIPTION
z
Malfunction in A/C compressor control system
z
Magnetic clutch does not operate when the A/C system is turned ON.
POSSIBLE CAUSE
z
Malfunction in PCM A/C cut control system
z
Malfunction in climate control unit
z
Malfunction in refrigerant pressure switch
z
Malfunction in PCM (A/C signal)
z
Malfunction in PCM (IG1 signal)
z
Malfunction in A/C compressor
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:14:51 AM
Page 26
© 2005 Mitchell Repair Information Company, LLC.
