BLUETOOTH Voice Guidance Is Heard When Pressing Steering Wheel Audio Control Switch

1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and microphone connector.
3. Check continuity between Bluetooth control unit connector B15 (A) and microphone connector R4 (B).

   Terminals				Continuity
   Connector	Terminal	Connector	Terminal
   A: B15	7	B: R4	1	Yes
   	8		2
   	29		4

4. Check continuity between Bluetooth control unit harness connector B15 and ground.

   Terminals			Continuity
   Connector	Terminal	-
   A: B15	7	Ground	No
   	8
   	29

   Fig 1: Checking Harness Between Bluetooth Control Unit & Microphone

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   OK or NG 

   OK: GO TO 2.

   NG: Repair harness or connector.

1. Connect Bluetooth control unit connector and microphone connector.
2. Turn ignition switch ON.
3. Check voltage between microphone connector R4 terminal 4 and ground.

   4 - Ground: Approx. 5V 

   Fig 2: Checking Microphone Power Supply

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   OK or NG 

   OK: GO TO 3.

   NG: Replace Bluetooth control unit. Refer to , "REMOVAL AND INSTALLATION ".

Check signal between Bluetooth control unit harness connector B15 terminals 7 and 8.

7 - 8: 

When giving a voice 

Fig 3: Identifying Waveform

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Fig 4: Checking Microphone Signal

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OK or NG 

OK: Replace Bluetooth control unit. Refer to , "REMOVAL AND INSTALLATION ".

NG: Replace microphone. Refer to , "REMOVAL AND INSTALLATION ".