DTC: 26:Er84 [AUDIO UNIT]

id09021q037200

Description

Microphone circuit malfunction
Detection condition
•  Microphone non-connection signal detected continuously
Fail-safe
Not applicable
Possible cause
•  Microphone connector or terminal malfunction
•  Bluetooth® unit or terminal malfunction
•  Short to ground in wiring harness between Bluetooth® unit terminal A and microphone terminal A
•  Open circuit in wiring harness between Bluetooth® unit terminal E and microphone terminal E
•  Microphone malfunction
•  Bluetooth® unit malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT MICROPHONE CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the microphone connector.
•  Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminal, then go to Step 6.
No
Go to the next step.
2
INSPECT Bluetooth® UNIT CONNECTOR CONDITION
•  Disconnect the Bluetooth® unit connector.
•  Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminal, then go to Step 6.
No
Go to the next step.
3
INSPECT MICROPHONE INPUT CIRCUIT FOR SHORT TO GROUND
•  Verify that the microphone and Bluetooth® unit connectors are disconnected.
•  Inspect for continuity between Bluetooth® unit terminal A (wiring harness-side) and body ground.
•  Is there continuity?
Yes
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 ground.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground.
Go to Step 6.
No
Go to the next step.
4
INSPECT MICROPHONE CIRCUIT FOR OPEN CIRCUIT
•  Verify that the microphone and Bluetooth® unit connectors are disconnected.
•  Inspect for continuity between Bluetooth® unit terminal E (wiring harness-side) and microphone terminal E (wiring harness-side).
•  Is there continuity?
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 E and microphone terminal E.
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 an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 6.
5
VERIFY IF MALFUNCTIONING LOCATION IS MICROPHONE DEPENDING ON REPEATABILITY
•  Always reconnect all disconnected connectors.
•  Connect the negative battery terminal.
•  Clear the Bluetooth® unit DTCs.
•  Perform the Bluetooth® unit DTC inspection.
•  Is the same Pending DTC present?
Yes
Replace the microphone, then go to the next step.
(See MICROPHONE REMOVAL/INSTALLATION.)
No
Go to Step 7.
6
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery terminal.
•  Clear the Bluetooth® unit DTCs.
•  Perform the Bluetooth® unit DTC inspection.
•  Is the same Pending DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the Bluetooth® unit.
Go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [AUDIO UNIT].)
No
DTC troubleshooting completed.