NO.11 DUAL A/C CONTROL DOES NOT OPERATE DIAGNOSTIC PROCEDURE
STEP
INSPECTION
ACTION
1
CHECK SYMPTOM
z
Turn on the front A/C.
z
Perform the dual A/C control function for driver and
passenger-side individually.
z
Is it either of cannot the temperature control on driver seat
side or front passenger seat side?
Yes Go to the next step.
No
Go to Step 8.
2
INSPECT TO SEE WHETHER MALFUNCTION IS IN AIR
MIX DOOR OR ELSEWHERE
z
Turn on the front A/C
z
Change temperature control for suspect side seat at the dual
mode.
z
Does the suspect side air mix door move smoothly?
Yes Go to the next step.
No
Go to Step 6.
3
INSPECT AIR MIX DOOR
z
Inspect the suspect side air mix door.
{
Is the fan free of interfere with the suspect side A/C
unit case?
{
Is the fan free of foreign material and obstruction?
z
Is the air mix door normal?
Yes Go to the next step.
No
Remove the obstruction or
replace the suspect side
A/C unit case, then go to
Step 9.
4
INSPECT FRONT AIR MIX ACTUATOR
z
Inspect the suspect side front air mix actuator.
z
Is the front air mix actuator normal?
Yes Go to the next step.
No
Replace the suspect front
air mix actuator, then go to
Step 9.
5
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
z
Inspect for open, short or poor connection of terminals
between the suspect front air mix actuator and front climate
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
Yes
Repair or replace
malfunction part, then go
to Step 9.
No
Replace the front climate
control unit, then go to
Step 9.
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:14:51 AM
Page 34
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