Diagnostic Procedure

Step	INSPECTION		Action
1	INSPECT AUDIO UNIT CONNECTOR AND TERMINALS Switch the ignition OFF (LOCK). Disconnect the negative battery cable. Disconnect the audio unit connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 6.
1		No	Go to the next step.
2	INSPECT SPEAKER CONNECTOR AND TERMINALS Disconnect the speaker connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 6.
2		No	Go to the next step.
3	INSPECT SPEAKER CIRCUIT FOR OPEN CIRCUIT Audio unit and speaker connector is disconnected. Inspect for continuity between the following terminals (wiring harness-side): Audio unit terminal 1A-Front door speaker (LH) terminal B Audio unit terminal 1C-Front door speaker (LH) terminal A Audio unit terminal 1D-Front door speaker (RH) terminal B Audio unit terminal 1F-Front door speaker (RH) terminal A Audio unit terminal 1S-Rear speaker (LH) terminal B Audio unit terminal 1U-Rear speaker (LH) terminal A Audio unit terminal 1V-Rear speaker (RH) terminal B Audio unit terminal 1X-Rear speaker (RH) terminal A Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 6.
4	INSPECT SPEAKER CIRCUIT FOR SHORT TO GROUND Inspect for continuity between the following terminals (wiring harness-side) and body ground: Speaker terminal B Speaker terminal A Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
4		No	Go to the next step.
5	INSPECT SPEAKER Switch the ignition OFF (LOCK). Inspect the speaker. (See FRONT DOOR SPEAKER INSPECTION .) (See REAR SPEAKER INSPECTION .) Is there any malfunction?	Yes	Replace the speaker, then go to the next step. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION .) (See REAR SPEAKER REMOVAL/INSTALLATION .)
5		No	Go to the next step.
6	CONFIRM AUDIO UNIT DTC Clear the DTC from the audio unit memory. (See CLEARING DTC [AUDIO] .) Perform the audio unit DTC inspection. (See DTC INSPECTION [AUDIO] .) Is the same DTC present?	Yes	Replace the audio unit, then go to the next step. (See AUDIO UNIT REMOVAL/INSTALLATION .)
6		No	Go to the next step.
7	VERIFY THAT NO OTHER DTCs ARE RECORDED Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [AUDIO] .)
7		No	DTC troubleshooting completed.