Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

VOICE OPERATION NOT POSSIBLE - DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY ALL SYSTEM DTCs Perform the DTC inspection. (Refer to the [ON-BOARD DIAGNOSTIC - MAZDA CONNECT ] in the workshop service information) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	INSPECT MICROPHONE AND CONNECTIVITY MASTER UNIT (CMU) CONNECTORS FOR MALFUNCTION Inspect the applicable connector and terminal. (Refer to the [CONNECTOR INSPECTION ] in the workshop service information) Are the connector and terminal normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT MICROPHONE SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY, SHORT TO GROUND AND OPEN CIRCUIT Inspect the signal circuit for a short to power supply, short to ground, and an open circuit. (Refer to the [CIRCUIT INSPECTION ] in the workshop service information) Is the circuit normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) ] in the workshop service information) If the CAN communication is normal, replace the microphone, then go to the next step. (Refer to the [MICROPHONE REMOVAL/INSTALLATION ] in the workshop service information)
Repair completion verification 2	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 2		No	Repeat the diagnosis from Step 1. If the malfunction is not resolved, replace the connectivity master unit (CMU). (Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION ] in the workshop service information)