Mazda CX-9 Grand Touring 2009 Manual page 1759

INSPECT REAR MODE ACTUATOR
(See REAR AIRFLOW MODE ACTUATOR
8
INSPECTION .)
Is the rear airflow mode actuator normal?
INSPECT TO SEE WHETHER MALFUNCTION IS IN
WIRING HARNESS (OPEN, SHORT OR POOR
CONNECTION OF TERMINALS BETWEEN FRONT
AND REAR AIRFLOW MODE ACTUATOR) OR
ELSEWHERE
Inspect for open, short or poor connection of terminals
between front and rear airflow mode actuator.
Terminal 2P (front climate control unit)- terminal C
(rear airflow mode actuator)
9
Terminal 2B (front climate control unit)- terminal A
(rear airflow mode actuator)
Terminal 2D (front climate control unit)- terminal E
(rear airflow mode actuator)
Terminal 1N (front climate control unit)- terminal F
(rear airflow mode actuator)
Terminal 1L (front climate control unit)- terminal G
(rear airflow mode actuator)
Is there any open, short or poor connection of terminals?
VERIFY REPAIR
10
Does air blow from the rear A/C vent mode?
NO.7 AMOUNT OF AIR FROM REAR VENTS DOES NOT CHANGE
NO.7 AMOUNT OF AIR FROM REAR VENTS DOES NOT CHANGE DESCRIPTION AND
POSSIBLE CAUSE
7 Amount of air from rear vents does not change
DESCRIPTION
POSSIBLE
CAUSE
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Malfunction in rear blower motor system
Amount of air blowing rear vents does not change when switching front and/or
rear climate control unit airflow volume control dial.
Rear A/C unit malfunction
Rear blower motor malfunction
Rear power MOS FET malfunction
Yes Go to the next step.
Replace the rear airflow
No mode actuator, then go to
Step 10.
Repair or replace
Yes malfunctioning part, then go
to next step.
Replace the front climate
No control unit, go to the next
step.
Troubleshooting completed.
Yes
Explain repairs to customer.
Recheck malfunction
symptoms, then repeat from
No
Step 1 if the malfunction
recurs.