DTC: B116A:13, 26:Er84, DEVICE CORD 26/ERROR CORD 84 [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]

id0902g8444200

DESCRIPTION

Microphone circuit malfunction
DETECTION CONDITION
Microphone non-connection signal detected continuously
POSSIBLE CAUSE
•  Connector or terminal malfunction
•  Open circuit in wiring harness between the following terminals:
―  Bluetooth unit terminal E and microphone terminal E (L.H.D.)/F (R.H.D.)
•  Short to ground in wiring harness between the following terminals:
―  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 to off.
•  Disconnect the negative battery cable.
•  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 5.
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 5.
No
Go to the next step.
3
INSPECT MICROPHONE CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Bluetooth unit terminal E and microphone terminal E (L.H.D.)/F (R.H.D.)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 5.
4
INSPECT MICROPHONE INPUT CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Bluetooth unit terminal A and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to the next step.
No
Go to the next step.
5
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC from the Bluetooth unit memory.
•  Perform the Bluetooth unit DTC inspection.
•  Is the same DTC present?
Yes
Replace the microphone then go to the next step.
(See MICROPHONE REMOVAL/INSTALLATION.)
No
Go to Step 7.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Clear the DTC from the Bluetooth unit memory.
•  Perform the Bluetooth unit DTC inspection.
•  Is the same DTC present?
Yes
Replace the Bluetooth unit, then go to the next step.
(See Bluetooth UNIT REMOVAL/INSTALLATION.)
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE RECORDED
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)].)
No
DTC troubleshooting completed.