Mazda CX-9 Grand Touring. Manual — part 525

1



Is the lens of the back camera dirty or view is
obstructed?

Yes

Clean the lens of the back camera or
remove the obstruction.

No

Go to the next step.

2



Does the lens of the back camera have a crack and
damage?

Yes Replace the back camera.

No

Go to the next step.

3



Turn the ignition switch to the LOCK position.



Remove the back camera.



Inspect the connection of the back camera
connector (4-pin).



Disconnect the back camera connector (4-pin).



Inspect both the back camera 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 poor connection of back camera

connector:



Securely connect the back

camera connector.

If the back camera connector is

wrong:



Replace the back camera.

If the wiring harness-side

connector is wrong:



Repair or replace the pins

and/or the connector.

4



Turn the ignition switch to the LOCK position.



Remove the audio unit.



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



Disconnect the audio unit connector (4-pin).



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



Are all the pins normal?

Yes Go to the next step.

No

If poor connection of audio unit

connector:



Securely connect the audio

unit connector.

If the audio unit connector is

wrong:



Replace the audio unit.

If the wiring harness-side

connector is wrong:



Repair or replace the pins

and/or the connector.



Inspect the following wiring harnesses between
the audio unit and rear mount camera.

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 16

© 2005 Mitchell Repair Information Company, LLC.

NO.8 SPEECH RECOGNITION DOES NOT START [CAR-NAVIGATION
SYSTEM]

TROUBLESHOOTING CHART

DIAGNOSTIC PROCEDURE

DIAGNOSTIC PROCEDURE

5



Terminal A (4-pin, POWER)-terminal A (4-
pin, POWER)



Terminal B (4-pin, P-GND)-terminal B (4-
pin, P-GND)



Terminal C (4-pin, V-GND)-terminal D (4-
pin, V-GND)



Terminal D (4-pin, COMPOSITE)-terminal
C (4-pin, COMPOSITE)



Is there open or short circuit?

No

Inspect the suspect wiring harness.

Repair or replace if necessary.

6



Turn the ignition switch to the LOCK position.



Remove the audio unit.



Disconnect the audio unit connector (24-pin).



Turn the ignition switch to ON.



Shift the selector lever in R range.



Inspect the voltage between the rear view monitor
control module terminals M (24-pin, REV) and W
(24-pin, GND).



Is the voltage B+?

Yes

Replace the back camera, then
inspect generating of malfunction
symptom.
Even if it exchanges back camera,
when a fault phenomenon occurs:



Replace the audio unit.



Reinspect the malfunction
symptom, then repeat from
Step 1 if malfunction recurs.

No

Inspect the suspect wiring harness

(reverse signal). Repair or replace if

necessary.

8

Speech recognition does not start

POSSIBLE

CAUSE



Microphone malfunction



Car-navigation unit malfunction



Audio control switch malfunction



Poor connection of audio unit connector, terminal damage



Poor connection of car-navigation unit connector, terminal damage



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

STEP

INSPECTION

ACTION



Turn the ignition switch to the ACC 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 10:40:44 AM

Page 17

© 2005 Mitchell Repair Information Company, LLC.

1



Start the car-navigation.



Display the map screen.



Press the VOICE button (audio control switch).



Is the speech recognition icon displayed on the
screen upper left?

No

Go to Step 4.

2



Start the diagnostic function.



Press the Menu button inside of diagnostic
screen.



Select "Navigation check".



Select "Microphone check".



After pressing the VOICE button, it utters
somewhat greatly toward a microphone.



Inspect the display of "Microphone input level
judging".



Is a judgment "OK" (blue display)?

Yes

The system is normal.

CAUTION:



Sound may not be recognized
by the influence of the
following.



Speaker's utterance
method



Road noise



Other noises

No

Replace the microphone, then go to

the next step.

3



Does the fault phenomenon improve?

Yes Troubleshooting is completed.
No

Replace the car-navigation unit.

4



Start the diagnostic function.



Inspect the display of "Microphone" in
diagnostic screen.



Is it display "OK"?

Yes Go to the next step.

No

Go to Step 6.

5



The power supply of the audio unit is turned on.



Press the VOICE button (audio control switch).



Does it muffle?

Yes Replace the car-navigation unit.

No

Audio control switch system

malfunction. Go to the audio symptom

troubleshooting.

6



Turn the ignition switch to the LOCK position.



Remove the microphone.



Inspect the connection of the microphone
connector (6-pin).



Is the connection securely connected?

Yes Go to the next step.

No

Securely connect the microphone

connector.

7



Disconnect the microphone connector (6-pin).



Inspect both microphone connector 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 microphone connector is

wrong:



Replace the microphone.

If the wiring harness-side connector

is wrong:

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 18

© 2005 Mitchell Repair Information Company, LLC.



Repair or replace the pins and/or

the connector.

8



Remove the car-navigation unit.



Inspect the connection of the car-navigation unit
connector (6-pin).



Is the connection securely connected?

Yes Go to the next step.

No

Securely connect the car-navigation

unit connector.

9



Disconnect the car-navigation unit connector (6-
pin).



Inspect both car-navigation unit connector 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 car-navigation unit connector

is wrong:



Replace the car-navigation unit.

If the wiring harness-side connector

is wrong:



Repair or replace the pins and/or

the connector.

10



Inspect the following wiring harnesses between
the microphone and HF/TEL unit.



Terminal A (6-pin, MIC+)-terminal B
(24-pin, MIC IN+)



Terminal B (6-pin, MIC-)-terminal D (24-
pin, MIC IN-)



Terminal C (6-pin, MIC +B)-terminal U
(24-pin, MIC+B)



Terminal D (6-pin, GND)-terminal F (24-
pin, MIC IN SHIELD)



Terminal E (6-pin, MIC SENSE)-terminal
J (24-pin, MIC SENSE)



Is there open or short circuit?

Yes

Repair or replace suspect wiring
harness.

No

Go to the next step.

11



Inspect the following wiring harnesses between
the hands-free unit and car-navigation unit.



Terminal A (24-pin, MIC OUT+)-
terminal A (6-pin, MIC+)



Terminal C (24-pin, MIC OUT-)-terminal
B (6-pin, MIC-)



Terminal E (24-pin, MIC OUT SHIELD)-
terminal D (6-pin, GND)



Terminal J (24-pin, MIC SENSE)-
terminal E (6-pin, MIC SENSE)



Is there open or short circuit?

Yes

Repair or replace suspect wiring
harness.

No

Replace the microphone, then 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 19

© 2005 Mitchell Repair Information Company, LLC.