STEP 1. Checking with audio speaker test
STEP 2. Check the speaker, tweeter or subwoofer.
(1) Remove the speaker, tweeter or subwoofer.
(2) Check that the speaker, tweeter or subwoofer outputs the noise when the voltage of 5 V is applied to the speaker, tweeter or subwoofer connector terminal.
Do the speaker output the noise?
Go to Step 3. Replace the speaker, tweeter or subwoofer.
STEP 3. Check the wiring harness between the speaker, tweeter or subwoofer connector terminal and the audio amplifier connector terminal.
STEP 4. Check of short circuit in FL+, FL-, FR+, FR-, RR+, RR- line between audio amplifier connector and radio and CD player connector
STEP 5. Check the speaker, tweeter or subwoofer.
Follow the speaker test to check which speaker, tweeter or subwoofer does not sound.(1) Remove the speaker, tweeter or subwoofer.
(2) Check that the speaker, tweeter or subwoofer outputs the noise when the voltage of 5 V is applied to the speaker, tweeter or subwoofer connector terminal.
Do the speaker output the noise?
Go to Step 6. Replace the speaker, tweeter or subwoofer.
STEP 6. Check the wiring harness between the speaker, tweeter or subwoofer connector terminal and the audio amplifier connector terminal.
Follow the speaker test to check which speaker, tweeter or subwoofer circuit is defective.- Check of open circuit in DFR+, DFR- line between front door speaker (RH) connector and audio amplifier connector. <Front door speaker (RH)>
- Check of open circuit in DFL+, DFL- line between front door speaker (LH) connector and audio amplifier connector. <Front door speaker (LH)>
- Check of open circuit in TFR+, TFR- line between tweeter (RH) connector and audio amplifier connector. <Tweeter (RH)>
- Check of open circuit in TFL+, TFL- line between tweeter (LH) connector and audio amplifier connector. <Tweeter (LH)>
- Check of open circuit in RR+, RR- line between rear door speaker (RH) connector and audio amplifier connector. <Rear door speaker (RH)>
- Check of open circuit in RL+, RL- line between rear door speaker (LH) connector and audio amplifier connector. <Rear door speaker (LH)>
- Check of open circuit in RW+, RW1+, RW-, RW1- line between subwoofer connector and audio amplifier connector. <subwoofer>
Is the check result normal?
Go to Step 7. Repair the connector(s) or wiring harness.
STEP 7. Check of open circuit in FL+, FL-, FR+, FR-, RR+, RR- line between audio amplifier connector and radio and CD player connector
STEP 8. Retest the system