Inspection Procedure 2: No sound is heard. < Vehicles without audio amplifier >: Diagnosis
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
Required Special Tools:
- MB991223: Harness Set
- MB992006: Extra Fine Probe
- STEP 1. Checking with audio speaker test
Perform the audio speaker test, and check which speaker or tweeter does not output the sound. Refer to ON-VEHICLE SERVICE .
Q: Is the check result normal?
- YES: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO (No speakers and tweeters sound.) : Go to Step 2
- NO (No sound is heard from one of the speakers or tweeters.) : Go to Step 4
- STEP 2. Check the speaker or tweeter.
- Remove the speaker or tweeter. Refer to < VEHICLES WITH DISPLAY AUDIO > .
- Check that the speaker or tweeter outputs the noise when the voltage of 5 V is applied to the speaker or tweeter connector terminal.
Q: Do the speaker output the noise?
- YES: Go to Step 3
- NO: Replace the speaker or tweeter.
- STEP 3. Check the wiring harness between the speaker or tweeter connector terminal and the multivision display connector terminal.
- Check of short circuit in FR+, FR- line front door speaker (RH) connector and multivision display connector. < Front door speaker (RH) >
- Check of short circuit in FL+, FL- line front door speaker (LH) connector and multivision display connector. < Front door speaker (LH) >
- Check of short circuit in FR+, FR- line tweeter (RH) connector and multivision display connector. < Tweeter (RH) >
- Check of short circuit in FL+, FL- line tweeter (LH) connector and multivision display connector. < Tweeter (LH) >
- Check of short circuit in RR+, RR- line rear door speaker (RH) connector and multivision display connector. < Rear door speaker (RH) >
- Check of short circuit in RL+, RL- line rear door speaker (LH) connector and multivision display connector. < Rear door speaker (LH) >
Q: Is the check result normal?
- YES: Go to Step 6
- NO: Repair the connector(s) or wiring harness.
- STEP 4. Check the speaker or tweeter.
Follow the speaker test to check which speaker or tweeter does not sound.
- Remove the speaker or tweeter. Refer to < VEHICLES WITH DISPLAY AUDIO > .
- Check that the speaker or tweeter outputs the noise when the voltage of 5 V is applied to the speaker connector terminal.
Q: Do the speaker output the noise?
- YES: Go to Step 5
- NO: Replace the speaker or tweeter.
- STEP 5. Check the wiring harness between the speaker or tweeter connector terminal and the multivision display connector terminal.
Follow the speaker test to check which speaker or tweeter circuit is defective.
- Check of open circuit in FR+, FR- line front door speaker (RH) connector and multivision display connector. < Front door speaker (RH) >
- Check of open circuit in FL+, FL- line front door speaker (LH) connector and multivision display connector. < Front door speaker (LH) >
- Check of open circuit in FR+, FR- line tweeter (RH) connector and multivision display connector. < Tweeter (RH) >
- Check of open circuit in FL+, FL- line tweeter (LH) connector and multivision display connector. < Tweeter (LH) >
- Check of open circuit in RR+, RR- line rear door speaker (RH) connector and multivision display connector. < Rear door speaker (RH) >
- Check of open circuit in RL+, RL- line rear door speaker (LH) connector and multivision display connector. < Rear door speaker (LH) >
Q: Is the check result normal?
- YES: Go to Step 6
- NO: Repair the connector(s) or wiring harness.
- STEP 6. Retest the system
Check if the sound is output from all the speakers or tweeters.
Q: Is the check result normal?
- YES: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO: Replace the multivision display.