No.1 HANDS-FREE TELEPHONE SYSTEM DOES NOT RECEIVE/TRANSMIT CALLS, DOES NOT CONNECT [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]SM2446159
No.1 HANDS-FREE TELEPHONE SYSTEM DOES NOT RECEIVE/TRANSMIT CALLS, DOES NOT CONNECT [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]

id0903h5844000

1

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

Possible DTC

Using the M-MDS

B1134:23, B116A:12, B116A:13, B116A:16, B116A:44, U0498:68

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

Audio unit

26:Er85, 26:Er82, 26:Er84, 26:Er83, 26:Er86, 26:Er81

Car-navigation unit

Device code 26/error code 85, 82, 84, 83, 86, 81
Possible cause
• Malfunction in steering switch related parts
― Open or short circuit in the wiring harness between the Hang-up/Pick-up/Talk switch and Bluetooth unit
― CAN communication error between the audio unit/car-navigation unit (without integrated multi information display) and Bluetooth unit
― Hang-up/Pick-up/Talk switch malfunction
― Poor connection in the connector
• Malfunction in microphone related parts
― Open or short circuit in the wiring harness between the microphone and Bluetooth unit
― Microphone malfunction
― Poor connection in the connector
• Malfunction in audio system
― Open or short circuit in the wiring harness between the Bluetooth unit and the speaker through the audio amplifier (with Bose ®)
― Open or short circuit in the wiring harness between the Bluetooth unit and the speaker through the audio unit (without Bose ®)
― Poor connection in the connector
• Bluetooth unit does not respond
― Bluetooth unit malfunction
― 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
― Poor connection in the connector
• Problem in cellular phone
― Cellular phone does not set up to Bluetooth system
― Cellular phone does not operate (low battery voltage, power off)
― Cellular phone is outside of the signal transmission area
― Bluetooth does not operate
― A cellular phone other than a Hands-free telephone system-enabled models is used.


Diagnostic procedure

• When performing an asterisked (*) troubleshooting inspection, slightly shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If there is a problem, verify that the connectors, terminals and wiring harness are connected correctly and undamaged.

STEP

INSPECTION

ACTION
1
• Verify if the customer’s cellular phone is a Hands-free telephone system-enabled model by referring to following URL.
― 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
Set up the cellular phone to the Bluetooth unit.
No
Go to the next step.
5
• Is the audio system sound output normal?
Yes
Go to the next step.
No
Perform the audio system troubleshooting procedure.
6
• Perform the audio system on-board diagnostic.
• Are the following DTC displayed?
― B116A:12/26:Er82/device code26, error code82
― B116A:16/26:Er83/device code26, error code83
― B116A:13/26:Er84/device code26, error code84
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 Bluetooth unit terminal A
― Between microphone terminal B and Bluetooth unit terminal B
― Between microphone terminal C and Bluetooth unit terminal C
― Between microphone terminal E (L.H.D.)/F (R.H.D.) and Bluetooth unit terminal E
• Are the harnesses and connector connections normal?
Yes
Replace the microphone.
(See MICROPHONE REMOVAL/INSTALLATION.)
No
Repair or replace malfunctioning parts.
8
• Perform the audio system on-board diagnostic.
• Is U0498:68/26:Er81/device code26, error code81 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.
• Is the Hang-up/Pick-up/Talk switch normal?
(See STEERING SWITCH INSPECTION.)
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 steering switch terminal G and audio unit/car-navigation unit (without integrated multi information display) (24-pin) terminal 1N
― Between steering switch terminal N and Bluetooth unit (28-pin) terminal F
― Between audio unit/car-navigation unit (without integrated multi information display) (24-pin) terminal 1O and Bluetooth unit (28-pin) terminal Y
― Between audio unit/car-navigation unit (without integrated multi information display) (24-pin) terminal 1Q and Bluetooth unit (28-pin) terminal Z
• Are the harnesses and connector connections normal?
Yes
Go to the next step.
No
Repair or replace malfunctioning parts.
11
• Call the hands-free cell phone using another cellular phone.
• Do the same symptoms appear?
Yes
Replace the Bluetooth unit.
(See Bluetooth UNIT REMOVAL/INSTALLATION.)
No
The cellular phone Bluetooth system is malfunctioning.