Regardless of whether DTC B15A804 has been output as a present or history DTC, the DCM (telephone transceiver assembly) should be replaced.
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.
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PROCEDURE
1.
REPLACE DCM (TELEPHONE TRANSCEIVER ASSEMBLY)
(a) Replace the DCM (telephone transceiver assembly) with a new one.
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NOTICE:
The ignition switch must be off.
Do not exchange the DCM (telephone transceiver assembly) with one from another vehicle.