Mazda CX-7 2007 Workshop Manual page 1484

SYMPTOM TROUBLESHOOTING [CAR-NAVIGATION SYSTEM]
STEP
• Disconnect the driver-side front door speaker
4
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?
• Remove the car-navigation unit. (See 09-20-
5
5 CAR-NAVIGATION UNIT REMOVAL/
INSTALLATION.)
• Inspect the connection of the car-navigation
unit connector (16-pin).
• Is the connector securely connected?
• Disconnect the car-navigation unit connector
6
(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?
• Remove the audio amplifier.
7
• Inspect connection of the audio amplifier
connector (40-pin).
•
Is the connector securely connected?
• Disconnect the audio amplifier connector
8
(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?
• Inspect the continuity between following car-
9
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?
• Inspect for continuity between audio amplifier
10
and the driver-side front door speaker.
• Is there continuity?
• Inspect the driver-side front door speaker.
11
(See 09-20-7 FRONT DOOR SPEAKER
INSPECTION.)
• Is it normal?
End Of Sie
09-03H–8
INSPECTION
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.
Yes Go to the next step.
No Securely connect the car-navigation unit connector.
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.
Yes Go to the next step.
No Securely connect the audio amplifier.
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.
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.
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.
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.)
ACTION