Manual pages - MX5 Manual | Mazda MX5 (Mk4) 2015+

Knowledge Base

Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

< Previous Next >

DTC: 26:Er82 [AUDIO UNIT]

Description	Microphone circuit malfunction
Detection condition	Short to power supply detected in microphone input circuit.
Fail-safe	Not applicable
Possible cause	Microphone connector or terminal malfunction Bluetooth^® unit connector or terminal malfunction Short to power supply in wiring harness between Bluetooth^® unit terminal A and microphone terminal A Microphone malfunction Bluetooth^® unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT MICROPHONE CONNECTOR CONDITION Switch the ignition off. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) Disconnect the microphone connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 5.
2	INSPECT Bluetooth® UNIT CONNECTOR CONDITION Disconnect the Bluetooth^® unit connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 5.
3	INSPECT MICROPHONE INPUT CIRCUIT FOR SHORT TO POWER SUPPLY Verify that the microphone and Bluetooth^® unit connectors are disconnected. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) Switch the ignition ON (engine off or on). Measure the voltage at the microphone terminal A (wiring harness-side). Is the voltage 0 V?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between Bluetooth^® unit terminal A and microphone terminal A. 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 a short to power supply. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to power supply. Go to Step 5.
4	VERIFY IF MALFUNCTIONING LOCATION IS MICROPHONE DEPENDING ON REPEATABILITY Always reconnect all disconnected connectors. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) Clear the DTC for the Bluetooth^® unit. (See CLEARING DTC [AUDIO UNIT].) Perform the Bluetooth^® unit DTC inspection. (See DTC INSPECTION [AUDIO UNIT].) Is the same DTC present?	Yes	Replace the microphone, then go to the next step. (See MICROPHONE REMOVAL/INSTALLATION.)
		No	Go to Step 6.
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Always reconnect all disconnected connectors. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) Clear the DTC for the Bluetooth^® unit. (See CLEARING DTC [AUDIO UNIT].) Perform the DTC inspection for the Bluetooth^® unit. (See DTC INSPECTION [AUDIO UNIT].) Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the Bluetooth^® unit. (See Bluetooth® UNIT REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
6	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO UNIT].)
		No	DTC troubleshooting completed.

< Previous Next >

This fan site is not affiliated with Mazda, and is intended for personal, or commercial use only. The content of our web pages is for general information purposes only and is presented “as is”. We give no assurance or warranty regarding the accuracy of the contents. Readers should do their due diligence and seek the advice of an appropriately certified automotive technician before attempting any steps on this site. Original content provided by Mazda North America. The content of the manual is copyright under DMCA to: full.metal.resistor@gmail.com

We accept no responsibility for errors, inaccuracies, or omissions found on these pages. Additionally, we hereby exclude liability for any demands, claims, damages or losses of any kind with regard to any content or information provided on our web-site, including but not limited to incidental or consequential damages, direct or indirect loss, compensatory damages, loss of profits, or otherwise. By using this manual you assume full liablity for any procedures carried out on your vehicle, and are responsible for the vehicle remaining road legal and safe.