Mazda CX-9 Grand Touring. Manual - part 444

 

  Index      Mazda     Mazda CX-9 Grand Touring - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  442  443  444  445   ..

 

 

Mazda CX-9 Grand Touring. Manual - part 444

 

 

compressor oil.  

Is noise heard when racing engine?  

Explain repair to customer.

11

CHECK TO SEE WHETHER 
MALFUNCTION IS IN A/C 
COMPRESSOR OR ELSEWHERE
  

Drain compressor oil.  

Is it contaminated with metal 
particles?  

Yes Go to the next step.

No

Replace A/C compressor, then go to Step 19.

12

CHECK TO SEE WHETHER 
MALFUNCTION IS SOMEWHERE IN 
A/C SYSTEM OR ELSEWHERE
  

Is compressor oil whitish and mixed 
with water?  

Yes

Replace entire A/C system (excluding heater), 
then go to Step 19.

No

Go to the next step.

13

INSPECT A/C COMPRESSOR OIL  

Is compressor oil darker than normal 
and contaminated with aluminum 
chips?  

Yes

Replace A/C compressor and condenser, then go 
to Step 19. (Since A/C compressor may be worn 
and receiver/drier may be clogged, replacement 
of receiver/drier is necessary.)

No

Condition is normal. Recheck malfunction 

symptoms.

14

CHECK TO SEE WHETHER 
MALFUNCTION IS IN A/C 
COMPRESSOR OR ELSEWHERE
  

Is noise heard immediately after A/C 
compressor is stopped?  

Yes

Replace A/C compressor, then go to Step 19. 
(A/C compressor discharge valve left open)

No

Go to the next step.

15

INSPECT DRIVE BELT  

Inspect drive belt. 

(See DRIVE BELT INSPECTION 
[MZI-3.7]
 .) 

Is it okay?  

Yes Go to the next step.

No

Adjust or replace drive belt, then go to Step 19.

16

INSPECT DRIVE BELT CONDITION 

Is drive belt worn?  

Does it have foreign material 
imbedded in it, or have oil on it?  

Yes

Remove obstruction, remove oil, or replace drive 
belt, then go to Step 19.

No

Go to the next step.

17

INSPECT MAGNETIC CLUTCH  

Inspect magnetic clutch. 

(See MAGNETIC CLUTCH 

Yes

Replace A/C compressor (excluding pressure 
plate, A/C compressor pulley, and stator), then go 
to Step 19.

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:14:51 AM

Page 32 

© 2005 Mitchell Repair Information Company, LLC. 

NO.11 DUAL A/C CONTROL DOES NOT OPERATE 

NO.11 DUAL A/C CONTROL DOES NOT OPERATE DESCRIPTION AND POSSIBLE CAUSE 

DIAGNOSTIC PROCEDURE 

INSPECTION .) 

Is it okay?  

No

Replace magnetic clutch, then go to Step 19.

18

CHECK TO SEE WHETHER 
MALFUNCTION IS IN A/C 
COMPRESSOR OR REFRIGERANT 
LINES
  

Is noise emitted from A/C 
compressor?  

Yes

Visually inspect A/C compressor, replace 
appropriate parts if necessary, then go to the next 
step.

No

If noise is due to refrigerant lines, repair detached 

or missing clips, tighten loose bolts, then go to 

the next step.

19

VERIFY THAT MALFUNCTION 
SYMPTOM OCCURS AFTER REPAIR
 

Has A/C compressor noise stopped?  

Yes

Troubleshooting completed. 
Explain repairs to customer.

No

Recheck malfunction symptoms, then repeat from 

Step 1 if malfunction recurs.

(1)

If there is gas leakage, air enters into the A/C system. The desiccant within the receiver/drier absorbs 
the moisture from the air and becomes saturated. If the A/C system is used in this condition, the 
inside of the A/C compressor will begin to rust due to this moisture, which may cause lock up or 
noise to occur. Therefore, replacement of the receiver/drier is necessary.

11

Dual A/C control function does not operate

DESCRIPTION 

Driver or passenger-side temperature control does not operate individually  

POSSIBLE 

CAUSE 

Driver-side air mix door malfunction (stuck)  

Passenger-side air mix door malfunction (stuck)  

driver-side front air mix actuator malfunction  

Passenger-side front air mix actuator malfunction  

Driver-side front air mix actuator position sensor malfunction  

Passenger-side front air mix actuator position sensor malfunction  

Open, short circuit in wiring or poor connection between front climate control 
unit and driver-side front air mix actuator  

Open, short circuit in wiring or poor connection between front climate control 
unit and passenger-side front air mix actuator  

Open, short circuit in wiring or poor connection between front climate control 
unit and driver-side front air mix actuator position sensor  

Open, short circuit in wiring or poor connection between front climate control 
unit and passenger-side front air mix actuator position sensor  

Front climate control unit malfunction  

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:14:51 AM

Page 33 

© 2005 Mitchell Repair Information Company, LLC. 

NO.11 DUAL A/C CONTROL DOES NOT OPERATE DIAGNOSTIC PROCEDURE 

STEP

INSPECTION

ACTION

1

CHECK SYMPTOM  

Turn on the front A/C.  

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?  

Yes Go to the next step.

No

Go to Step 8.

2

INSPECT TO SEE WHETHER MALFUNCTION IS IN AIR 
MIX DOOR OR ELSEWHERE
  

Turn on the front A/C  

Change temperature control for suspect side seat at the dual 
mode.  

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  

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?  

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  

Inspect the suspect side front air mix actuator.  

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
  

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 

© 2005 Mitchell Repair Information Company, LLC. 

(passenger-side front air mix actuator)  

Is there any open, short or poor connection of terminals?  

6*

INSPECT FRONT AIR MIX ACTUATOR POSITION 
SENSOR
  

Inspect the suspect side front air mix actuator position 
sensor.  

Is the front air mix actuator position sensor normal?  

Yes Go to the next step.

No

Replace the suspect front 

air mix actuator position 

sensor, then go to Step 9.

7

INSPECT TO SEE WHETHER MALFUNCTION IS IN 
WIRING HARNESS (OPEN, SHORT OR POOR 
CONNECTION OF TERMINALS BETWEEN AIR MIX 
ACTUATOR POSITION SENSOR AND FRONT CLIMATE 
CONTROL UNIT) OR ELSEWHERE
  

Inspect for open, short or poor connection of terminals 
between the suspect front air mix actuator position sensor 
and front climate control unit. 

Terminal 2F (front climate control unit)- terminal E 
(driver-side front air mix actuator position sensor)  

Terminal 2G (front climate control unit)- terminal E 
(passenger-side front air mix actuator position sensor) 

Terminal 2B (front climate control unit)- terminal A 
(each side front air mix actuator position sensor)  

Terminal 2P (front climate control unit)- terminal C 
(each side front air mix actuator position sensor)  

Is there any open, short or poor connection of terminals?  

Yes

Repair or replace 
malfunction part, then go 
to Step 9.

No

Replace the front climate 

control unit, then go to 

Step 9.

8

INSPECT TO SEE WHETHER MALFUNCTION IS IN 
WIRING HARNESS (OPEN, SHORT OR POOR 
CONNECTION OF TERMINALS BETWEEN FRONT 
CLIMATE CONTROL UNIT AND AIR MIX ACTUATOR 
POSITION SENSOR) OR ELSEWHERE
  

Inspect for open, short or poor connection of terminals 
between the front climate control unit and front air mix 
actuator position sensor. 

Terminal 2B (front climate control unit)- terminal A 
(each front air mix actuator position sensor)  

Terminal 2P (front climate control unit)- terminal C 
(each front air mix actuator position sensor)  

Is there any open, short or poor connection of terminals?  

Yes

Repair or replace 
malfunction part, then go 
to the next step.

No

Replace the front climate 

control unit, then go to the 

step.

9

CONFIRM THAT MALFUNCTION SYMPTOMS DOES 
NOT RECUR AFTER REPAIR
  

Yes

Troubleshooting 
completed. Explain repairs 
to customer.

Recheck malfunction 

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:14:51 AM

Page 35 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

Content   ..  442  443  444  445   ..