INSTALLATION PROCEDURE 1. INSTALL ACTIVE NOISE CONTROL MICROPHONE HINT: Use the same procedure for all active noise control microphones. (a) Engage the 2 claws to install the active noise control microphone to the roof headlining holder cover as shown in the illustration. 
2. INSTALL ACTIVE NOISE CONTROL MICROPHONE WITH COVER HINT: Use the same procedure for all active noise control microphone with covers. (a) Engage the 2 claws to install the active noise control microphone with cover as shown in the illustration. 
(b) Connect the connector. 3. INSTALL ROOF HEADLINING ASSEMBLY Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Lane Departure Alert System (w/ Steering Control)(for Hv Model): Driving Support ECU Receive Data Malfunction (C1A73)
DESCRIPTION If a communication error between the driving support ECU assembly and another ECU is detected, DTC C1A73 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A73 Driving Support ECU Receive Data Malfunction 2 seconds after the power switch is turned on (IG), a communi ...
