Mazda CX-9 Grand Touring 2009 Manual page 2096

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9
UNIT REMOVAL/INSTALLATION .)
Inspect the connection of the audio unit
4
connector (24-pin).
Is the connector securely connected?
Disconnect the audio unit connector (24-
pin).
Inspect both the audio unit and wiring
5
harness-side connector terminal E for poor
connection (such as damaged/pulled-out
pins, corrosion).
Are all the pins normal?
Inspect the voltage of the audio unit
wiring harness-side connector (24-pin)
6 terminal E (TNS signal)
Is voltage B+ when the light switch is
turned to the TNS position?
7
Does system work properly?
NO.7 DISPLAY DOES NOT CHANGE TO THE BACK CAMERA IMAGE. [CAR-
NAVIGATION SYSTEM]
TROUBLESHOOTING CHART
7 Display does not change to the back camera image
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
STEP
2008 Mazda CX-9 Grand Touring
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
INSPECTION
No Securely connect the audio unit connector.
Yes Go to the next step.
If the audio unit side connector is wrong:
Replace the audio unit. (See AUDIO
REMOVAL/INSTALLATION .)
No
If the wiring harness-side connector is
wrong:
Repair or replace the pins and/or the
Replace the audio unit, then go to the next
Yes step. (See AUDIO UNIT
REMOVAL/INSTALLATION .)
Inspect for TNS signal circuit. Repair or
No
replace if necessary.
Yes Troubleshooting is completed.
No Replace the car-navigation unit.
UNIT
connector.
ACTION