DTC: B116A:12, 26:Er82 [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]

id0902g8440100

Description | Open circuit in microphone circuit
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Detection condition | Short to power supply detected in microphone input circuit
Possible cause | • Connector or terminal malfunction • Open circuit in wiring harness between Bluetooth unit terminal 1A and microphone terminal A • Microphone malfunction • Bluetooth unit malfunction

Diagnostic Procedure

Step | Inspection | Action
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1 | INSPECT MICROPHONE CONNECTOR STATUS • Turn the ignition switch to the OFF position. • Disconnect the negative battery cable. • Disconnect the microphone connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 4.
No | Go to the next step.
2 | INSPECT Bluetooth UNIT CONDITION • Disconnect the Bluetooth unit connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 4.
No | Go to the next step.
3 | INSPECT FOR SHORT TO POWER SUPPLY IN MICROPHONE INPUT CIRCUIT • Reconnect all the disconnected connectors. • Connect the negative battery cable. • Turn the ignition switch to the ON position. • Measure the voltage of Bluetooth unit terminal 1A (vehicle wiring harness side). • Is the voltage B+? | Yes | Repair or replace the wiring harness which has a short to the power supply, then go to the next step.
No | Go to the next step.
4 | PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS MICROPHONE OR Bluetooth UNIT • Perform an inspection of the Bluetooth unit DTCs. (See STARTING PROCEDURE FOR ON-BOARD DIAGNOSTIC TEST MODE [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)].) • Is the same DTC displayed? | 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 • Perform an inspection of the Bluetooth unit DTCs. (See STARTING PROCEDURE FOR ON-BOARD DIAGNOSTIC TEST MODE [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)].) • Is the same DTC displayed? | Yes | Replace the Bluetooth unit, then go to the next step. (See Bluetooth UNIT REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed? | Yes | Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)].)
No | DTC troubleshooting completed.