Mazda CX-9 Grand Touring 2009 Manual page 2087

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9
connector (4-pin).
Inspect both audio unit connector
and wiring harness-side
connector for poor connection
14
(such as damaged/pulled-out
pins, corrosion).
Are all the pins normal?
Verify continuity between rear
mount camera and audio unit at
harness-side connector.
Rear mount camera
terminal A (4-pin,
POWER) and audio unit
terminal A (4-pin,
POWER)
Rear mount camera
terminal B (4-pin, P-GND)
and audio unit terminal B
15 (4-pin, P-GND)
Rear mount camera
terminal C (4-pin, V-
GND) and audio unit
terminal D (4-pin, V-
GND)
Rear mount camera
terminal D (4-pin,
CONPOSITE) and audio
unit terminal C (4-pin,
CONPOSITE)
Is there any continuity?
16
Does system work properly?
NO.2 DISPLAY SCREEN CHANGES TO WHITE. [CAR-NAVIGATION
SYSTEM]
TROUBLESHOOTING CHART
2
POSSIBLE CAUSE
2008 Mazda CX-9 Grand Touring
No
If the wiring harness-side connector is wrong:
Yes Go to the next step.
Inspect the suspect wiring harness and repair or
No
Yes Troubleshooting is completed.
No
Display screen changes to white.
Car-navigation unit malfunction
Audio unit malfunction
Improper adjustment of the screen contrast
If the audio unit connector is wrong:
Replace the audio unit.
Repair or replace the pins and/or the connector.
replace the wiring harness as necessary.
Replace the car-navigation unit.