Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Clearing DTC - Bluetooth System (Hands-Free Telephone (HF/TEL) System)
2010 Mazda 3 L4-2.5LSECTION Clearing DTC - Bluetooth System (Hands-Free Telephone (HF/TEL) System)
CLEARING DTC [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]
CAUTION:
- Before clearing the DTCs, be sure to enter all of the DTCs displayed in the DTC inspection in the Audio Repair Order Form.
Using the M-MDS
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
- When using the IDS (laptop PC)
1 Select "Self Test".
2 Select "Modules".
3 Select "ACU".
- When using the PDS (Pocket PC)
1 Select "Module Tests".
2 Select "ACU".
3 Select "Self Test".
3. Verify the DTC according to the directions on the screen.
4. Press the clear button on the DTC screen to clear the DTC.
5. Switch the ignition to off.
6. Switch the ignition to ON and wait for 5 s or more.
7. Perform DTC inspection. DTC Inspection - Bluetooth System (Hands-Free Telephone (HF/TEL) System)
8. Verify that no DTCs are displayed.
Without Using M-MDS (On-board Diagnostic Test Mode)
1. Launch the on-board diagnostic test mode. DTC Inspection - Bluetooth System (Hands-Free Telephone (HF/TEL) System)
2. While pressing the AUTO-M switch, simultaneously press the PRESET switch 4 for 2 s or more.
3. To stop the on-board diagnostic test mode, ignition is switched to off.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.