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DTC: 26:Er82 [AUDIO UNIT]

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2016 – MX-5 – Body and Accessories

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

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

Yes

Repeat the inspection from Step 1.

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.

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