NO.4 NO TEMPERATURE CONTROL WITH FRONT CLIMATE CONTROL
UNIT
NO.3 AIR INTAKE MODE FROM FRONT VENT DOES NOT CHANGE DESCRIPTION AND
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
NO.3 AIR INTAKE MODE FROM FRONT VENT DOES NOT CHANGE DIAGNOSTIC
PROCEDURE
8
CLIMATE CONTROL UNIT OR AIR INTAKE DOOR
z
Inspect the A/C unit air intake door.
{
Is the door free of obstructions, cracks, and
damage?
{
Are the doors securely and properly installed?
z
Are the above items normal?
Yes
Replace the climate control unit,
then go to the next step.
No
Remove obstruction, or install
the doors in the proper position.
If any doors are cracked or
damaged, replace them, then go
to the next step.
9
VERIFY REPAIR
z
Does the air intake mode change smoothly?
Yes
Troubleshooting completed.
Explain repairs to customer.
No
Recheck malfunction symptoms,
then repeat from Step 1 if the
malfunction recurs.
4
No temperature control with front climate control unit
DESCRIPTION
z
Malfunction in A/C unit and/or front climate control unit air mix system
z
Temperature does not change when switching front climate control unit
temperature setting dial.
POSSIBLE
CAUSE
z
A/C unit air intake link, air intake crank, air intake rod, air intake wire, wire
clamp malfunction
z
Climate control unit rack-and-pinion, air intake wire malfunction
z
A/C unit air intake door malfunction
z
Heater piping malfunction
STEP
INSPECTION
ACTION
1
INSPECT COOLANT TEMPERATURE
z
Is the engine at operating temperature?
Yes Go to the next step.
No
Warm up the engine, then go to Step 9.
INSPECT A/C UNIT AIR INTAKE
SYSTEM
z
Inspect the A/C unit air intake links, air
intake cranks, air intake rods, air intake
actuator, and wire clamp.
Yes Go to the next step.
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:14:50 AM
Page 11
© 2005 Mitchell Repair Information Company, LLC.
