Mazda CX-9 Grand Touring 2009 Manual page 1775

NO.11 DUAL A/C CONTROL DOES NOT OPERATE DIAGNOSTIC PROCEDURE
STEP
CHECK SYMPTOM
Turn on the front A/C.
1
Perform the dual A/C control function for driver and
passenger-side individually.
Is it either of cannot the temperature control on driver seat
side or front passenger seat side?
INSPECT TO SEE WHETHER MALFUNCTION IS IN AIR
MIX DOOR OR ELSEWHERE
Turn on the front A/C
2
Change temperature control for suspect side seat at the dual
mode.
Does the suspect side air mix door move smoothly?
INSPECT AIR MIX DOOR
Inspect the suspect side air mix door.
Is the fan free of interfere with the suspect side A/C
3
unit case?
Is the fan free of foreign material and obstruction?
Is the air mix door normal?
INSPECT FRONT AIR MIX ACTUATOR
4
Inspect the suspect side front air mix actuator.
Is the front air mix actuator normal?
INSPECT TO SEE WHETHER MALFUNCTION IS IN
WIRING HARNESS (OPEN, SHORT OR POOR
CONNECTION OF TERMINALS BETWEEN AIR MIX
ACTUATOR AND FRONT CLIMATE CONTROL UNIT)
OR ELSEWHERE
Inspect for open, short or poor connection of terminals
between the suspect front air mix actuator and front climate
5
control unit.
Terminal 1A (front climate control unit)- terminal G
(driver-side front air mix actuator)
Terminal 1F (front climate control unit)- terminal F
(driver-side front air mix actuator)
Terminal 1E (front climate control unit)- terminal F
(passenger-side front air mix actuator)
Terminal 1C (front climate control unit)- terminal G
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
INSPECTION ACTION
Yes Go to the next step.
No Go to Step 8.
Yes Go to the next step.
No Go to Step 6.
Yes Go to the next step.
Remove the obstruction or
replace the suspect side
No
A/C unit case, then go to
Step 9.
Yes Go to the next step.
Replace the suspect front
No air mix actuator, then go to
Step 9.
Repair or replace
Yes malfunction part, then go
to Step 9.
Replace the front climate
No control unit, then go to
Step 9.