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.