Mazda CX-9 Grand Touring 2009 Manual page 2098

2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9
Terminal A (4-pin, POWER)-terminal A (4-
pin, POWER)
Terminal B (4-pin, P-GND)-terminal B (4-
pin, P-GND)
5
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?
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.
6
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+?
NO.8 SPEECH RECOGNITION DOES NOT START [CAR-NAVIGATION
SYSTEM]
TROUBLESHOOTING CHART
8 Speech recognition does not start
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
STEP
Turn the ignition switch to the ACC position.
2008 Mazda CX-9 Grand Touring
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
INSPECTION
Inspect the suspect wiring harness.
No
Repair or replace if necessary.
Replace the back camera, then
inspect generating of malfunction
symptom.
Even if it exchanges back camera,
when a fault phenomenon occurs:
Yes
Replace the audio unit.
Reinspect the malfunction
symptom, then repeat from
Step 1 if malfunction recurs.
Inspect the suspect wiring harness
No (reverse signal). Repair or replace if
necessary.
ACTION
Yes Go to the next step.