4
z
Disconnect the air intake actuator connector.
z
Measure the voltages at the following climate control
unit terminals.
{
Terminal 10 (RECIRCULATE motor drive
signal)
{
Terminal 1M (FRESH motor drive signal) (See
FRONT CLIMATE CONTROL UNIT
INSPECTION
.)
z
Are voltages normal?
Yes
Inspect the air intake actuator,
then go to Step 9.
No
Go to the next step.
5
INSPECT TO SEE WHETHER MALFUNCTION IS IN
WIRING HARNESS (SHORT TO B+ BETWEEN
CLIMATE CONTROL UNIT AND AIR INTAKE
ACTUATOR) OR ELSEWHERE
z
Disconnect the climate control unit connector.
z
Measure the voltages at the following climate control
unit terminals.
{
Terminal 1O (RECIRCULATE motor drive
signal)
{
Terminal 1M (FRESH motor drive signal)
z
Are voltages
approx. 0 V?
Yes Go to the next step.
No
Repair the wiring harness
between the climate control unit
and air intake actuator, then go
to Step 9.
6
INSPECT TO SEE WHETHER MALFUNCTION IS IN
WIRING HARNESS (SHORT TO GROUND
BETWEEN CLIMATE CONTROL UNIT AND AIR
INTAKE ACTUATOR) OR ELSEWHERE
z
Turn the ignition switch to the LOCK position.
z
Inspect for continuity at the following terminals
between the climate control unit and ground.
{
Terminal 10 (RECIRCULATE motor drive
signal)
{
Terminal 1M (FRESH motor drive signal)
z
Is there continuity?
Yes
Repair the wiring harness
between the climate control unit
and air intake actuator, then go
to Step 9.
No
Go to the next step.
7
INSPECT AIR INTAKE LINK
z
Inspect the air intake links for followings:
{
is there grease on link?
{
Are the links securely and properly installed?
{
Are the links free of obstructions and
hindrances?
z
Are the above items normal?
Yes Go to the next step.
No
Apply grease to the links. If any
the links are damaged, replace
the air intake actuator, then go to
Step 9.
INSPECT TO SEE WHETHER MALFUNCTION IS IN
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:14:50 AM
Page 10
© 2005 Mitchell Repair Information Company, LLC.
