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(1)Operate the M.U.T.-III to read the ETACS-ECU option coding information (Refer to GROUP 00 - Coding Table ).
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(2)Check that the "Speaker" is set to "6 speakers".
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Q.
Is the check result normal?
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Operate the M.U.T.-III to set the option coding "Speaker" to "6 speakers", and check the trouble symptom.
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Perform the audio speaker check, and check which speaker does not output the sound. Refer to .
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Q.
Is the check result normal?
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YES (normal for all) : The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
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NO (abnormal for all) : Check the audio unit power supply and earth circuit, and repair if necessary. If the audio unit power supply and earth circuit is normal, replace the audiovisual navigation unit.
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NO (Either a speaker is abnormal) : Go to Step 3.
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Q.
Is the check result normal?
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Repair the defective connector.
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(1)Remove the speaker or tweeter. Refer to .
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(2)Check that the speaker or tweeter outputs the noise when the voltage of 5 V is applied to the speaker or tweeter connector terminal.
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Q.
Is the check result normal?
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Replace the speaker or tweeter.
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Q.
Is the check result normal?
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Repair the defective connector.
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Check the communication lines for open circuit.
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- <Front door speaker (LH)> Check the wire harness between E-16 front door speaker (LH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.28, 38.
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Prior to the wiring harness inspection, check intermediate connector C-113 <RH drive vehicles> or C-128 <LH drive vehicles>, and repair if necessary.
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- <Front door speaker (RH)> Check the wire harness between E-04 front door speaker (RH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.26, 36.
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Prior to the wiring harness inspection, check intermediate connector C-113 <LH drive vehicles> or C-128 <RH drive vehicles>, and repair if necessary.
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- <Rear speaker (LH) or rear door speaker (LH)> Check the wire harness between E-23 rear door speaker (LH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.27, 37.
note |
Prior to the wiring harness inspection, check intermediate connectors C-36 and D-23, and repair if necessary.
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- <Rear speaker (RH) or rear door speaker (RH)> Check the wire harness between E-09 rear door speaker (RH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.25, 35.
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Prior to the wiring harness inspection, check intermediate connectors C-24 and D-36, and repair if necessary.
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- <Tweeter (LH)> Check the wire harness between E-13 tweeter (LH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.38, 28.
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Prior to the wiring harness inspection, check intermediate connector C-114 <RH drive vehicles> or C-129 <LH drive vehicles>, and repair if necessary.
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- <Tweeter (RH)> Check the wire harness between E-02 tweeter (RH) connector terminal No.1, 2 and C-18 audio unit connector terminal No.36, 26.
note |
Prior to the wiring harness inspection, check intermediate connector C-114 <LH drive vehicles> or C-129 <RH drive vehicles>, and repair if necessary.
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Q.
Is the check result normal?
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Repair the wiring harness.
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