Mazda CX-9 Grand Touring 2009 Manual page 1774

INSPECTION .)
Is it okay?
CHECK TO SEE WHETHER
MALFUNCTION IS IN A/C
COMPRESSOR OR REFRIGERANT
18 LINES
Is noise emitted from A/C
compressor?
VERIFY THAT MALFUNCTION
SYMPTOM OCCURS AFTER REPAIR
19
Has A/C compressor noise stopped?
(1) 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.
NO.11 DUAL A/C CONTROL DOES NOT OPERATE
NO.11 DUAL A/C CONTROL DOES NOT OPERATE DESCRIPTION AND POSSIBLE CAUSE
11
DESCRIPTION
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Dual A/C control function does not operate
Driver or passenger-side temperature control does not operate individually
Driver-side air mix door malfunction (stuck)
Passenger-side air mix door malfunction (stuck)
driver-side front air mix actuator malfunction
Passenger-side front air mix actuator malfunction
Driver-side front air mix actuator position sensor malfunction
Passenger-side front air mix actuator position sensor malfunction
Open, short circuit in wiring or poor connection between front climate control
unit and driver-side front air mix actuator
Open, short circuit in wiring or poor connection between front climate control
unit and passenger-side front air mix actuator
Open, short circuit in wiring or poor connection between front climate control
unit and driver-side front air mix actuator position sensor
Open, short circuit in wiring or poor connection between front climate control
unit and passenger-side front air mix actuator position sensor
Front climate control unit malfunction
No Replace magnetic clutch, then go to Step 19.
Visually inspect A/C compressor, replace
Yes appropriate parts if necessary, then go to the next
step.
If noise is due to refrigerant lines, repair detached
No or missing clips, tighten loose bolts, then go to
the next step.
Troubleshooting completed.
Yes
Explain repairs to customer.
Recheck malfunction symptoms, then repeat from
No
Step 1 if malfunction recurs.