Diagnostic Procedure

Step	Inspection		Action
1	INSPECT MICROPHONE CONNECTOR CONDITION Switch the ignition OFF (LOCK). Disconnect the negative battery cable. Disconnect the microphone connector. Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 5.
1		No	Go to the next step.
2	INSPECT Bluetooth UNIT CONNECTOR CONDITION Disconnect the Bluetooth unit connector. Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector or terminal, then go to Step 5.
2		No	Go to the next step.
3	INSPECT MICROPHONE CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between the following terminals (wiring harness-side): Bluetooth unit terminal E and microphone terminal E 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 5.
4	INSPECT MICROPHONE INPUT CIRCUIT FOR SHORT TO GROUND Inspect for continuity between the following terminals (wiring harness-side) and body ground: Bluetooth unit terminal A and body ground Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to the next step.
4		No	Go to the next step.
5	VERIFY TROUBLESHOOTING COMPLETED Make sure reconnect the disconnected connectors. Reconnect the negative battery cable. Clear the DTC from the Bluetooth unit memory. (See CLEARING DTC [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) Perform the Bluetooth unit DTC inspection. (See DTC INSPECTION [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) Is the same DTC present?	Yes	Replace the microphone then go to the next step. (See MICROPHONE REMOVAL/INSTALLATION .)
5		No	Go to Step 7.
6	VERIFY TROUBLESHOOTING COMPLETED Clear the DTC from the Bluetooth unit memory. (See CLEARING DTC [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) Perform the Bluetooth unit DTC inspection. (See DTC INSPECTION [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) Is the same DTC present?	Yes	Replace the Bluetooth unit, then go to the next step. (See BLUETOOTH 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 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .)
7		No	DTC troubleshooting completed.