Mazda CX-9 Grand Touring. Manual - part 521

1. Inspect the runout and contact on the pulley and belt.  

2. Inspect for engine oil, engine coolant, ATF, power steering fluid and fuel leakage.  

3. Verify the ignition timing, idle speed and idle mixture. (See ENGINE TUNE-UP [MZI-3.7] .)  

4. Engine accessories operation.  

13. Inspect the oil pressure. (See OIL PRESSURE INSPECTION [MZI-3.7].)  

14. Perform a road test. 

Fig. 21: Identifying Oil Pump, O-Ring & Torque Specifications 
Courtesy of MAZDA MOTORS CORP.

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Lubrication (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

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2008 BODY & ACCESSORIES

Symptom Troubleshooting (Car Navigation System) - Mazda CX-9 

CAR-NAVIGATION SYSTEM [CAR-NAVIGATION SYSTEM] 

TROUBLESHOOTING INDEX 



Use the chart below and verify the trouble in order to diagnose the appropriate area.  

TROUBLESHOOTING CHART 

QUICK DIAGNOSTIC CHART 

No.

Malfunction symptom

1 Display screen changes to black.
2 Display screen changes to white.
3 System does not load map disc.
4 Vehicle position deviates from the route map.
5 No voice navigation

6

Display screen does not change to the night mode. (Front and rear combination lights operate 
normally.)

7 Display does not change to the back camera image.
8 Speech recognition does not start.

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9

  

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:40:43 AM

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Sunday, November 15, 2009 10:40:52 AM

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Fig. 1: Quick Diagnostic Chart - Car Navigation System 
Courtesy of MAZDA MOTORS CORP. 

NO.1 DISPLAY SCREEN CHANGES TO BLACK. [CAR-NAVIGATION 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:40:43 AM

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© 2005 Mitchell Repair Information Company, LLC. 

SYSTEM] 

TROUBLESHOOTING CHART 

DIAGNOSTIC PROCEDURE 

DIAGNOSTIC PROCEDURE 

1

Display screen changes to black.

POSSIBLE 

CAUSE 



Open or short circuit in car-navigation unit (power supply (B+)) wiring 
harness  



Open or short circuit in car-navigation unit (power supply (ACC)) wiring 
harness  



Open or short circuit in car-navigation unit (GND) wiring harness  



Open or short circuit in wiring harness between audio unit and car-navigation 
unit  



Poor connection of rear mount camera control module connector, terminal 
damage  



Open or short circuit in audio unit (power supply (B+)) wiring harness  



Open or short circuit in audio unit (power supply (ACC)) wiring harness  



Open or short circuit in audio unit (power supply (IG1)) wiring harness  



Open or short circuit in audio unit (GND) wiring harness  



Open or short circuit in wiring harness between audio unit and rear view 
monitor  



Poor connection of car-navigation unit connector, terminal damage  



Poor connection of audio unit connector, terminal damage  



Car-navigation unit malfunction  



Audio unit malfunction  

STEP

INSPECTION

ACTION

1



Turn the ignition switch to the 
ACC position.  



Does the display screen change 
from blank to NAVI mode when 
pressing the joystick of the car-
navigation control switch?  

Yes

The system is normal. 

NOTE:



If the "VOICE" button is pressed for approx. 
2 s or more , the "DISP OFF" menu appears 
on the bottom-left side of screen. If "DISP 
OFF" mode is selected, the audio unit will 
not display anything. "DISP OFF" mode is 
cancelled when the ignition switch is turned 
to the LOCK position or the joystick of the 
car-navigation control switch is pressed.  

No

Go to the next step.



Shift the selector lever in R 
position.  

Yes Go to the next step.

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:40:43 AM

Page 3 

© 2005 Mitchell Repair Information Company, LLC.