Mazda CX-7 2007 Workshop Manual page 1455

NO.5 CANNOT PRESET (PRESET FUNCTION DOES NOT OPERATE)[RADIO]
5 Cannot preset (preset function does not operate)/Possible DTC: 21:Er19
• Audio unit malfunction
POSSIBLE
• Center panel malfunction
CAUSE
Diagnostic procedure
STEP
• Tune to desired station and push channel
1
preset button 1 for about 2 seconds to store
it.
• Repeat above for other stations using
channel preset buttons 2 to 5.
•
Push channel preset button 1 to 6 one by
one.
• Are stored stations present?
• Turn ignition switch to LOCK and then to
2
ACC.
• Check if preset stations are stored by
pushing preset buttons.
• Are stations stored?
• Remove center panel from audio unit, and
3
reinstall center panel to audio unit.
• Turn audio power switch ON.
• Press the POWER button and
simultaneously press the CLOCK button for
approx. 1s.
• Push all buttons and check if buzzer sounds.
• Are all buttons okay?
End Of Sie
NO.6 RECEPTION FREQUENCY OF RADIO SLIPS[RADIO]
6 Reception frequency of radio slip/Possible DTC: 09:Er22
• Audio unit malfunction
POSSIBLE
• Electronic jamming from outside, or inferior condition of broadcasting station radio wave
CAUSE
Diagnostic procedure
STEP
• Push SEEK button and check if desired
1
broadcasting station is tuned.
• Is it okay?
• Check if other broadcasting station is
2
received at certain place when indication of
reception frequency stays.
• Is other station received?
Note
• When you receive weak signal from one
broadcasting station and come close to
broadcasting antenna which emits strong
signal, broadcasting with strong signal is
sometimes received.
• Compare reception with other audio unit on
3
same model (model/unit) under same
problem conditions.
• Is reception equivalent between customer's
unit and compared unit?
End Of Sie
SYMPTOM TROUBLESHOOTING [RADIO]
INSPECTION
INSPECTION
Yes Go to the next step.
No Go to the Step 3.
Yes The system is normal. (Explain preset procedure to
customer using Owner's Manual)
No Replace audio unit.
Yes Replace audio unit.
No Replace center panel.
Yes Go to the Step 3.
No Go to the next step.
Yes Go to the next step.
No Replace audio unit.
Yes Troubleshooting completed (Audio unit is normal).
No Replace audio unit.
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09-03E–9
09-03E