T-TT-0516-18_Rev

Service Bulletin Details

Public Details for: T-TT-0516-18_Rev

Tt: the microphone circuit passes through the dcm before reaching the radio/navigation system. To simplify the diagnosis of the microphone, safety connect sos button lights, and dcm (telematics transceiver) inoperative conditions, refer to


- 2019 - 2018 -

Models from 2019
2019 TOYOTA 4RUNNER
2019 TOYOTA AVALON HYBRID
2019 TOYOTA C-HR
2019 TOYOTA CAMRY HYBRID
2019 TOYOTA COROLLA
2019 TOYOTA HIGHLANDER
2019 TOYOTA HIGHLANDER HYBRID
2019 TOYOTA LAND CRUISER
2019 TOYOTA MIRAI
2019 TOYOTA PRIUS
2019 TOYOTA PRIUS PRIME
2019 TOYOTA RAV4 HYBRID
2019 TOYOTA SIENNA
Models from 2018
2018 TOYOTA 4RUNNER
2018 TOYOTA AVALON HYBRID
2018 TOYOTA C-HR
2018 TOYOTA CAMRY HYBRID
2018 TOYOTA HIGHLANDER
2018 TOYOTA HIGHLANDER HYBRID
2018 TOYOTA LAND CRUISER
2018 TOYOTA MIRAI
2018 TOYOTA SIENNA 
Tech Tip T-TT-0516-18
February 06, 2019
Subject
Market
Microphone & Safety Connect Inoperative Diagnostic
Precautions
USA
Service Category
Section
Audio/Visual/Telematics
Cellular Communication
Applicability
Models Equipped with DCM
APPLICABLE VEHICLES
2018-2019
2018-2019
2018-2019
2018-2019
2019
2019
2019
2018-2019
Camry
Prius
Avalon HV
Land Cruiser
Corolla Hatchback
RAV4 HV
RAV4
Highlander HV
2018-2019
2018-2019
2018-2019
2018-2019
2018-2019
2018-2019
2018-2019
2018-2019
Highlander
Sienna
Mirai
4Runner
C-HR
Avalon
Prius Prime
Camry HV
CONDITION
The microphone circuit passes through the DCM before reaching the radio/navigation system. To
simplify the diagnosis of the microphone, Safety Connect SOS button lights, and DCM (Telematics
transceiver) inoperative conditions, refer to the procedure below to prevent unnecessary parts
replacement.
RECOMMENDATIONS





Disconnect the 12V battery for 30 minutes to reset/initialize the DCM
Confirm if the microphone is still inoperative, Safety Connect SOS button lights, or (DCM)
conditions have changed by performing a reset/initialization
If the microphone is operating normally and the green SOS light is ON, normal operation has
been restored
If the microphone is still inoperative, the SOS has no lights, or a steady red light ON, diagnose
them per the repair manual
Be sure to check all wiring and DCM connections before replacing the microphone
LINK REFERENCES
This Tech Tip does not contain any link references
Expires on
Ver. 2.9 01/01/2018 T
02/06/2020
Rev1
© 2018, Toyota Motor Sales, USA
Page 1 of 1

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