Mazda CX 7. Manual — part 371
SYMPTOM TROUBLESHOOTING [CAR-NAVIGATION SYSTEM]
09-03H–5
09-03H
NO.2 DISPLAY SCREEN CHANGES TO WHITE.[CAR-NAVIGATION SYSTEM]
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Diagnostic procedure
End Of Sie
NO.3 SYSTEM DOES NOT LOAD THE MAP DISC.[CAR-NAVIGATION SYSTEM]
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Diagnostic procedure
End Of Sie
2
Display screen changes to white.
POSSIBLE CAUSE
• Car-navigation unit malfunction
• audio unit malfunction
• Improper adjustment of the screen contrast
STEP
INSPECTION
ACTION
1
• Turn the ignition switch to the ACC position.
• Shift the selector lever in R range.
• Is the rear view screen normal?
Yes
Replace the car-navigation unit.
No
Go to the next step.
2
• Does the display screen change to “display
quality adjustment” mode when pressing the
MODE button for approx. 2 s or more?
Yes
Go to the next step.
No
Replace the audio unit.
3
• Select “default display” or “display quality
adjustment” mode in the NAVI mode.
• Press “ENTER” button.
• Does system work properly?
Yes
Troubleshooting is completed.
No
Replace the audio unit, then go to the next step.
3
System does not load the map disc.
POSSIBLE CAUSE
• Car-navigation unit malfunction
• Map disc malfunction
• Moisture inside of car-navigation unit
• Non-designated disc is inserted
Note
• If dewdrops are formed inside of the car-navigation unit, the display screen shows the “The disc
installed is not a map DVD” message. Remove the map disc, ventilate or remove moisture from
the passenger compartment, and then leave it for approx. 1 h. The dewdrops will be removed and
the car-navigation unit will operate normally.
• In case of a dirty/damaged map disc or car-navigation unit malfunction, the display screen will
show the “Please insert a map DVD” message for few seconds to 1 min, then change to “The disc
installed is not a map DVD” message after the ignition switch is turned to the ACC position.
• If a non-designated disc is inserted, the display screen shows the “The disc installed is not a map
DVD” message.
STEP
INSPECTION
ACTION
1
• Eject the map disc.
• Is the map okay?
Yes
Go to the next step.
No
Insert a designated disc, then go to the next step.
2
• Eject the map disc then insert the map disc
again.
• Does the system load the map disc?
Yes
Trouble shooting is completed.
No
Go to the next step.
3
• Eject the map disc and clean the surface of
map disc with a soft cloth.
• Insert map disc again.
• Does the “Cannot Read Disc” error message
show up on the screen?
Yes
Trouble shooting is completed.
No
Replace car-navigation unit and map disc at the same time.
(consult distributor) (See 09-20-5 CAR-NAVIGATION UNIT
REMOVAL/INSTALLATION.)
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SYMPTOM TROUBLESHOOTING [CAR-NAVIGATION SYSTEM]
09-03H–6
NO.4 VEHICLE POSITION DEVIATES FROM THE ROUTE MAP.[CAR-NAVIGATION SYSTEM]
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Diagnostic procedure
4
Vehicle position deviates from the route map.
POSSIBLE CAUSE
• Jammed radio signals from after market equipment (radar, remote engine starter, anti-theft device
etc.)
• Open or short circuit in the wiring harness (vehicle speed signal related).
• Car-navigation unit malfunction.
• Poor connection of the GPS antenna connector, terminal damage
• GPS antenna malfunction.
• Open or short circuit in feeder line between GPS antenna feeder and car-navigation unit.
STEP
INSPECTION
ACTION
1
• Is any of the following after-market
equipment installed? (Inspect especially near
the GPS antenna.)
— Radar
— Remote engine starter
— Anti-theft device.
— Other
Yes
Go to the next step.
No
Go to Step 3.
2
• Remove the after-market equipment.
Note
• The procedure requires an assistant.
• Drive the vehicle without any obstacles.
• Does the vehicle indicator follow the steering
wheel direction?
Yes
System is normal. The after-market electrical device might
be interrupting to the GPS reception.
No
Go to the next step.
3
• Position the vehicle without any obstacles
and receive GPS for 5 min at idle.
• Does “GPS” show up on the left lower side of
the display screen?
Yes
Go to the next step.
No
Go to Step 8.
4
Caution
• This procedure requires an assistant.
• Start the diagnostic function.
• Drive the vehicle.
• Check the “Speed” on the diagnosis screen.
• Does the “Speed” change according to the
vehicle speed?
Note
• If the engine is started after diagnostic
functions activated, the diagnostic
function mode is reset.
Yes
Go to the next step.
No
Go to Step 6.
5
Caution
• This procedure requires an assistant.
• Drive the vehicle and turn the steering wheel
to the left and/or right.
• Does the vehicle indicator follow the steering
direction?
Yes
The system is normal.
Note
• The vehicle indicator might be out of position in the
following areas:
— Parallel road, high-level road, loop road, tower type
parking, high-rise buildings lot
No
Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
6
• Turn the ignition switch to the LOCK position.
• Remove the car-navigation unit. (See 09-20-
5 CAR-NAVIGATION UNIT REMOVAL/
INSTALLATION.)
• Inspect the connection of the car-navigation
unit connector (16-pin).
• Is the connector securely connected?
Yes
Go to the next step.
No
Securely connect the car-navigation unit connector.
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SYMPTOM TROUBLESHOOTING [CAR-NAVIGATION SYSTEM]
09-03H–7
09-03H
End Of Sie
NO.5 NO VOICE NAVIGATION[CAR-NAVIGATION SYSTEM]
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Diagnostic procedure
7
• Disconnect the car-navigation unit connector
(16-pin).
• Inspect both car-navigation unit connector
and wiring harness-side connector terminal
H for poor connection (such as damaged/
pulled-out pins, corrosion).
• Are all the pins normal?
Yes
Inspect for vehicle speed signal input circuit.
Repair or replace if necessary.
No
If the car-navigation unit connector is wrong:
• Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
If the wiring harness-side connector is wrong:
• Repair or replace the pins and/or the connector.
8
Note
• If the engine is started after diagnostic
functions activated, the diagnostic
function mode is reset.
• Turn the ignition switch to ON position.
• Start the diagnostic function.
• Inspect the “GPS antenna” on diagnosis
screen.
• Is the “OK” indicated?
Yes
Go to the next step.
No
Go to the Step 6.
9
• Turn the ignition switch to the LOCK position.
• Remove the car-navigation unit. (See 09-20-
5 CAR-NAVIGATION UNIT REMOVAL/
INSTALLATION.)
• Inspect the connection of the car-navigation
unit connector and GPS antenna connector.
• Is the connector securely connected?
Yes
Go to the next step.
No
Securely connect the GPS antenna connector.
10
• Disconnect the GPS antenna connector.
• Inspect both GPS antenna connector and
car-navigation unit connector for poor
connection (such as damaged/pulled-out
pins, corrosion).
• Are all the pins normal?
Yes
Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
No
If the wiring harness-side connector is wrong:
• Repair or replace the suspect wiring harness.
If the car-navigation unit side connector is wrong:
• Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
STEP
INSPECTION
ACTION
5
No voice navigation
POSSIBLE CAUSE
• Improper adjustment of the NAVI voice volume
• Car-navigation unit malfunction
• Poor connection of the driver-side front door speaker connector, terminal damage
• Driver-side front door speaker malfunction
• Poor connection of the car-navigation unit connector, terminal damage
• Open or short circuit in driver-side front door speaker wiring harness
• Poor connection of the audio amplifier connector, terminal damage
STEP
INSPECTION
ACTION
1
• Is the voice navigation volume from “1”
ton“7”?
Yes
Go to the next step.
No
Adjust the volume from “1” to “7”.
2
• Turn the audio power switch (CD, MD, radio)
to ON.
• Does the driver-side front door speaker
work?
Yes
Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
No
Go to the next step.
3
• Turn the ignition switch to the LOCK position.
• Remove the driver-side front door speaker.
(See 09-20-6 FRONT DOOR SPEAKER
REMOVAL/INSTALLATION.)
• Inspect the connection of the driver-side front
door speaker connector (2-pin).
• Is the connector securely connected?
Yes
Go to the next step.
No
Securely connect the driver-side front door speaker
connector.
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SYMPTOM TROUBLESHOOTING [CAR-NAVIGATION SYSTEM]
09-03H–8
End Of Sie
4
• Disconnect the driver-side front door speaker
connector (2-pin).
• Inspect both the driver-side front door
speaker 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 driver-side front door speaker side
connector is wrong:
• Replace the driver-side front door speaker. (See 09-20-6
FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)
If the wiring harness-side connector is wrong:
• Repair or replace the pins and/or the connector.
5
• Remove the car-navigation unit. (See 09-20-
5 CAR-NAVIGATION UNIT REMOVAL/
INSTALLATION.)
• Inspect the connection of the car-navigation
unit connector (16-pin).
• Is the connector securely connected?
Yes
Go to the next step.
No
Securely connect the car-navigation unit connector.
6
• Disconnect the car-navigation unit connector
(16-pin).
• Inspect both the car-navigation unit and
wiring harness-side connector terminal F, I
and K 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 side connector is wrong:
• Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
If the wiring harness-side connector is wrong:
• Repair or replace the pins and/or the connector.
7
• Remove the audio amplifier.
• Inspect connection of the audio amplifier
connector (40-pin).
• Is the connector securely connected?
Yes
Go to the next step.
No
Securely connect the audio amplifier.
8
• Disconnect the audio amplifier connector
(40-pin).
• Inspect the audio amplifier and wiring
harness connector terminal 3B, 3G and 3H
for poor connection (such as damaged/
pulled-out pins, corrosion).
• Are all the pins normal?
Yes
Go to the next step.
No
If the audio amplifier side connector is wrong:
• Replace the audio amplifier.
Replace the audio amplifier.
• Repair or replace the pins and/or the connector.
9
• 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-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?
Yes
Inspect for short circuit in wiring harness.
If there is a short circuit, repair or replace the suspect wiring
harness.
If the wiring harness is okay, go to the next step.
No
Repair or replace the wiring harness.
10
• Inspect for continuity between audio amplifier
and the driver-side front door speaker.
• Is there continuity?
Yes
Inspect for short circuit in the wiring harness.
If there is a short circuit, repair or replace the suspect wiring
harness.
If the wiring harness is okay, go to the next step.
No
Repair or replace the wiring harness.
11
• Inspect the driver-side front door speaker.
(See 09-20-7 FRONT DOOR SPEAKER
INSPECTION.)
• Is it normal?
Yes
Replace the car-navigation unit. (See 09-20-5 CAR-
NAVIGATION UNIT REMOVAL/INSTALLATION.)
No
Replace the driver-side front door speaker. (See 09-20-6
FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)
STEP
INSPECTION
ACTION
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