NO.5 WINDSHIELD FOGGED
NO.5 WINDSHIELD FOGGED DESCRIPTION AND POSSIBLE CAUSE
front air mix actuator)
{
Between terminals 1E (climate
control unit) and F (passenger-side
front air mix actuator)
{
Between terminals 2G (climate
control unit) and E (passenger-side
front air mix actuator)
z
Is there any open, short or poor
connection of terminals?
No
Go to the next step.
8
INSPECT HEATER LINE
z
Inspect the heater lines.
{
Is the heater piping free of damage
and cracks?
{
Are the heater piping connections
free of engine coolant leakage?
{
Are the heater piping connections
securely tightened?
{
Are the heater piping installation
points on A/C unit free of engine
coolant leakage?
z
Are the above items normal?
Yes
Operation is normal. Recheck malfunction
symptoms.
No
If heater piping connections are loose,
tighten the connections to the specified
torque.
Repair or replace the heater piping, then go
to the next step.
9
VERIFY REPAIR
z
Does the unit operate in every temperature
setting?
Yes
Troubleshooting completed.
Explain repairs to customer.
No
Recheck malfunction symptoms, then repeat
from Step 1 if the malfunction recurs.
5
Windshield fogged.
DESCRIPTION
z
Malfunction in A/C compressor control system and/or air intake mode
switching system
z
A/C compressor does not operate while airflow mode is DEFROSTER or
HEAT/DEF modes.
z
Air intake mode does not change to FRESH while airflow mode is in
DEFROSTER or HEAT/DEF modes.
POSSIBLE
CAUSE
z
Front climate control unit (B+ signal) system malfunction
z
Air intake actuator malfunction
z
Front climate control unit (RECIRCULATE, FRESH signal) system
malfunction
z
A/C unit air intake door malfunction
2008 Mazda CX-9 Grand Touring
2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:14:50 AM
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