Mazda CX-9 Grand Touring. Manual - part 524

 

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Mazda CX-9 Grand Touring. Manual - part 524

 

 

REMOVAL/INSTALLATION .)  

Inspect the connection of the driver-side 
front door speaker connector (2-pin).  

Is the connector securely connected?  

No

Securely connect the driver-side front door 

speaker connector.

4

Disconnect the driver-side front door 
speaker connector (2-pin).  

Inspect both the driver-side front door 
speaker and wiring harness-side 
connector for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are all the pins normal?  

Yes Go to the next step.

No

If the driver-side front door speaker side 

connector is wrong:  

Replace the driver-side front door 

speaker. (See FRONT DOOR 

SPEAKER 

REMOVAL/INSTALLATION .)  

 

If the wiring harness-side connector is 

wrong:  

Repair or replace the pins and/or the 

connector.  

5

Inspect for continuity between audio 
amplifier and the driver-side front door 
speaker.  

Is there continuity?  

Yes Go to the next step.

No

Repair or replace the wiring harness.

6

Inspect the driver-side front door speaker. 
(See FRONT DOOR SPEAKER 
INSPECTION
 .)  

Is it normal?  

Yes Go to the next step.

No

Replace the driver-side front door speaker. 

(See FRONT DOOR SPEAKER 

REMOVAL/INSTALLATION .)

7

Remove the car-navigation unit. (See 
CAR-NAVIGATION UNIT 
REMOVAL/INSTALLATION
 .)  

Inspect the connection of the car-
navigation unit connector (16-pin).  

Is the connector securely connected?  

Yes Go to the next step.

No

Securely connect the car-navigation unit 

connector.

8

Disconnect the car-navigation unit 
connector (16-pin).  

Inspect both the car-navigation unit and 
wiring harness-side connector terminal F, 
I and K for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are all the pins normal?  

Yes Go to the next step.

No

If the car-navigation unit side connector is 

wrong:  

Replace the car-navigation unit. (See 

CAR-NAVIGATION UNIT 

REMOVAL/INSTALLATION .)  

 

If the wiring harness-side connector is 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:40:44 AM

Page 12 

© 2005 Mitchell Repair Information Company, LLC. 

NO.6 DISPLAY SCREEN DOES NOT CHANGE TO THE NIGHT MODE. 
(FRONT AND REAR COMBINATION LIGHTS OPERATE NORMALLY.) [CAR-
NAVIGATION SYSTEM] 

TROUBLESHOOTING CHART 

wrong:  

Repair or replace the pins and/or the 

connector.  

9

Remove the audio amplifier.  

Inspect connection of the audio amplifier 
connector (40-pin).  

Is the connector securely connected?  

Yes Go to the next step.

No

Securely connect the audio amplifier.

10

Disconnect the audio amplifier connector 
(40-pin).  

Inspect the audio amplifier and wiring 
harness connector terminal 3B, 3G and 
3H for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are all the pins normal?  

Yes Go to the next step.

No

Repair or replace the pins and/or the 

connector.

11

Inspect the continuity between following 
car-navigation unit and audio amplifier at 
harness-side connector. 

Car-navigation unit terminal F (16-
pin, MUTE) and audio amplifier 
terminal 3B (40-pin, NAVI INT)  

Car-navigation unit terminal I (16-
pin, PRE SP OUT+) and audio 
amplifier terminal 3G (40-pin, 
NAVI-)  

Car-navigation unit terminal K (16-
pin, PRE SP OUT-) and audio 
amplifier terminal 3H (40-pin, 
NAVI+)  

Is there continuity?  

Yes

Inspect for short circuit in wiring harness. 
If there is a short circuit, repair or replace the 
suspect wiring harness. 
If the wiring harness is okay, go to the next 
step.

No

Repair or replace the wiring harness.

12

Replace the audio amplifier. (See 
AUDIO AMPLIFIER 
REMOVAL/INSTALLATION
 .)  

Does the voice navigation operate 
properly.  

Yes

Troubleshooting completed. (The audio 
amplifier malfunction)

No

Replace the car-navigation unit.

Display screen does not change to the night mode. (Front and rear combination 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:40:44 AM

Page 13 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DIAGNOSTIC PROCEDURE 

6

lights operate normally.)

POSSIBLE 

CAUSE 

Improper setting of NAVI map indication  

Open or short circuit in TNS signal wiring harness (TNS signal related)  

audio unit malfunction  

Poor connection of the audio unit connector, terminal damage  

Car-navigation unit malfunction 

NOTE:

The car-navigation control switch is inoperative if the following circuit 
has malfunction 

Audio unit connector (24-pin) terminal I (UART-2)-car-navigation 
unit connector (24-pin) terminal N (UART-2)  

Audio unit connector (24-pin) terminal E (UART-1)-car-navigation 
unit connector (24-pin) terminal P(UART-1)  

When the ignition switch is turned to LOCK position, then ACC 
position, display screen changes to black.  

STEP

INSPECTION

ACTION

1

Turn the ignition switch to the ON 
position.  

Does the display screen change to the 
night mode when the light switch is turned 
to the TNS position, and the dimmer 
cancel switch is turned to OFF?  

Yes The system is normal.

No

Go to the next step.

2

Press the "MENU" button.  

Select "Navigation Set Up".  

Select "User Setting".  

Inspect "MAP Mode".  

Is the "MAP Mode" set to "Auto"?.  

Yes Go to the next step.

No

System is normal. Set the "MAP Mode" to 

"Auto".

3

Start diagnostic function is started.  

Turn the light switch to TNS position.  

Inspect the "TNS" on the diagnosis check 
screen.  

Does the "TNS" indicate "ON"?  

Yes

Replace the car-navigation unit. (See CAR-
NAVIGATION UNIT 
REMOVAL/INSTALLATION
 .)

No

Go to the next step.

Turn the ignition switch to the LOCK 
position.  

Remove the audio unit. (See AUDIO 

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 10:40:44 AM

Page 14 

© 2005 Mitchell Repair Information Company, LLC. 

NO.7 DISPLAY DOES NOT CHANGE TO THE BACK CAMERA IMAGE. [CAR-
NAVIGATION SYSTEM] 

TROUBLESHOOTING CHART 

DIAGNOSTIC PROCEDURE 

DIAGNOSTIC PROCEDURE 

4

UNIT REMOVAL/INSTALLATION .) 

Inspect the connection of the audio unit 
connector (24-pin).  

Is the connector securely connected?  

No

Securely connect the audio unit connector.

5

Disconnect the audio unit connector (24-
pin).  

Inspect both the audio unit and wiring 
harness-side connector terminal E for poor 
connection (such as damaged/pulled-out 
pins, corrosion).  

Are all the pins normal?  

Yes Go to the next step.

No

If the audio unit side connector is wrong: 

Replace the audio unit. (See AUDIO 

UNIT 

REMOVAL/INSTALLATION .)  

 

If the wiring harness-side connector is 

wrong:  

Repair or replace the pins and/or the 

connector.  

6

Inspect the voltage of the audio unit 
wiring harness-side connector (24-pin) 
terminal E (TNS signal)  

Is voltage B+ when the light switch is 
turned to the TNS position?  

Yes

Replace the audio unit, then go to the next 
step. (See AUDIO UNIT 
REMOVAL/INSTALLATION
 .)

No

Inspect for TNS signal circuit. Repair or 

replace if necessary.

7

Does system work properly?  

Yes Troubleshooting is completed.
No

Replace the car-navigation unit.

7

Display does not change to the back camera image

POSSIBLE 

CAUSE 

Back camera malfunction  

Poor connection of the back camera connector, terminal damage  

Audio unit malfunction  

Poor connection of the audio unit connector, terminal damage  

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

Open or short circuit in reverse signal wiring harness  

STEP

INSPECTION

ACTION

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:40:44 AM

Page 15 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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