Possible DTC

Hands-free telephone system does not receive/transmit calls, does not connect

Using the M-MDS

B116A:12, B116A:13, B116A:44

Without using M-MDS (On-board diagnostic test mode)

26:Er81, 26:Er82, 26:Er86

Possible cause

• Problem in cellular phone

• A cellular phone other than a hands-free telephone system-enabled models is used

• Cellular phone is outside of the signal transmission area

• Cellular phone does not operate (low battery voltage, power off)

• Cellular phone does not set up to Bluetooth system

• Bluetooth does not operate

• Malfunction in microphone related parts

• Poor connection in the connector

• Open or short circuit in the wiring harness between the microphone and Bluetooth unit

• Microphone malfunction

• Malfunction in steering switch related parts

• Poor connection in the connector

• Open or short circuit in the wiring harness between the Hang-up/Pick-up/Talk switch and Bluetooth unit

• Hang-up/Pick-up/Talk switch malfunction

• Malfunction in audio system

• Poor connection in the connector

• CAN communication error between the audio unit and Bluetooth unit

• Open or short circuit in the wiring harness between the Bluetooth unit and the speaker through the audio unit (without Bose^®)

• Open or short circuit in the wiring harness between the Bluetooth unit and the speaker through the audio amplifier (with Bose^®)

• Bluetooth unit does not respond

• Poor connection in the connector

• Open or short circuit in the wiring harness between the Bluetooth unit and the audio unit (without Bose^®)

• Open or short circuit in the wiring harness between the Bluetooth unit and the audio amplifier (with Bose^®)

• Open or short circuit in the wiring harness of the Bluetooth unit power supply or ground circuit

• Bluetooth unit malfunction

• Bluetooth unit electric field disturbance due to metallic device around Bluetooth unit

STEP

INSPECTION

ACTION

1

• Verify if the customer’s cellular phone is a Hands-free telephone system-enabled model by referring to

  http://www.mazdausa.com/MusaWeb/displayPage.action?

  pageParameter=bluetoothHandsFreeSystem.

• Is the customer’s cellular phone a Hands-free telephone system-enabled model?

Yes

Go to the next step.

No

Explain to the customer that the customer’s cellular phone is not a Hands-free telephone system-enabled model.

2

• Verify that the cellular phone is communicating with the Bluetooth unit.

• Does the cellular phone connect to the Bluetooth unit via Bluetooth when the Hands-free telephone system is activated?

Yes

Enter a cellular phone signal transmission area and reinspect the Bluetooth system operation.

No

Go to the next step.

3

• Inspect the cellular phone condition while the hands free phone does not operate.

• Can the following conditions be verified?

• Low battery voltage

• Power is off

• Out of signal transmission area

Yes

Enter a cellular phone signal transmission area and reinspect the Bluetooth system operation.

No

Go to the next step.

4

• Does the cellular phone set up to the Bluetooth unit?

Yes

Go to the next step.

No

Set up the cellular phone to the Bluetooth unit.

5

• Is the audio system sound output normal?

Yes

Go to the next step.

No

Perform the audio system troubleshooting procedure.

6

• Perform the Bluetooth system (hands-free telephone (HF/TEL) system) DTC inspection.

• Are the following DTC displayed?

• B116A:12/26:Er81

• B116A:13/26:Er82

• B116A:44/26:Er86

Yes

Go to the next step.

No

Go to Step 8.

7*

• Inspect for open or short circuits in the following wiring harnesses and connectors, and inspect the connector connections.

• Between microphone terminal A and audio unit terminal 2L

• Between microphone terminal A and Bluetooth unit terminal 1A

• Between microphone terminal B and audio unit terminal 2N

• Between microphone terminal B and Bluetooth unit terminal 1B

• Between microphone terminal C and audio unit terminal 2R

• Between microphone terminal D and audio unit terminal 2P

• Between microphone terminal E and audio unit terminal 2T

• Are the harnesses and connector connections normal?

Yes

Replace the microphone.

(See MICROPHONE REMOVAL/INSTALLATION.)

No

Refer to the wiring diagram and verify whether or not there is a common connector between microphone and audio unit/buletooth unit.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open or short circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open or short circuit.

8

• Perform the Bluetooth system (hands-free telephone (HF/TEL) system) DTC inspection.

• Is 26:Er81 displayed?

Yes

Inspect and repair the audio system CAN communication.

No

Go to the next step.

9

• Inspect the Hang-up/Pick-up/Talk switch.

  (See STEERING SWITCH INSPECTION.)

• Is the Hang-up/Pick-up/Talk switch normal?

Yes

Go to the next step.

No

Replace the steering switch.

(See STEERING SWITCH REMOVAL/INSTALLATION.)

10*

• Inspect for open or short circuits in the following wiring harnesses and connectors, and inspect the connector connections.

• Between clock spring terminal B and audio unit terminal 1H

• Between clock spring terminal E and audio unit terminal 1P

• Are the harnesses and connector connections normal?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between clock spring and audio unit.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open or short circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open or short circuit.

11

• Call the hands-free cell phone using another cellular phone.

• Do the same symptoms appear?

Yes

Go to the next step.

No

The cellular phone Bluetooth system is malfunctioning.

12

• Is there any metallic device around the Bluetooth unit?

Yes

Remove the metallic device around the Bluetooth unit, then go to the next step.

No

Go to the next step.

13

• Verify the malfunction symptom.

• Is the malfunction improved?

Yes

Troubleshooting completed.

No

Go to the next step.

14

• Replace the Bluetooth unit and verify the malfunction symptom.

  (See Bluetooth UNIT REMOVAL/INSTALLATION.)

• Is the malfunction improved?

Yes

Troubleshooting completed.

No

Replace the audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)