Mazda CX-9 Grand Touring 2009 Manual page 2094

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9
Remove the audio amplifier.
Inspect connection of the audio amplifier
9
connector (40-pin).
Is the connector securely connected?
Disconnect the audio amplifier connector
(40-pin).
Inspect the audio amplifier and wiring
10
harness connector terminal 3B, 3G and
3H for poor connection (such as
damaged/pulled-out pins, corrosion).
Are all the pins normal?
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-
11
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?
Replace the audio amplifier. (See
AUDIO AMPLIFIER
12 REMOVAL/INSTALLATION .)
Does the voice navigation operate
properly.
NO.6 DISPLAY SCREEN DOES NOT CHANGE TO THE NIGHT MODE.
(FRONT AND REAR COMBINATION LIGHTS OPERATE NORMALLY.) [CAR-
NAVIGATION SYSTEM]
TROUBLESHOOTING CHART
Display screen does not change to the night mode. (Front and rear combination
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
No
Yes Go to the next step.
No
Inspect for short circuit in wiring harness.
If there is a short circuit, repair or replace the
Yes suspect wiring harness.
If the wiring harness is okay, go to the next
step.
No
Troubleshooting completed. (The audio
Yes
amplifier malfunction)
No
wrong:
Repair or replace the pins and/or the
connector.
Securely connect the audio amplifier.
Repair or replace the pins and/or the
connector.
Repair or replace the wiring harness.
Replace the car-navigation unit.